检索结果-内蒙古大学图书馆

Integrated design of hydrogen production and thermal energy storage functions of Al-Bi-Cu composite powders

INTErNATIONAL JOUrNAL OF HYdrOGEN ENErGY 2023年第40期48卷 14931-14940页

作者： Wei, Haiting Wang, Cuiping Yang, Shuiyuan Yin, Bohao Huang, Yan Yu, Fangzheng Han, Jiajia Lu, Yong Liu, Xingjun Xiamen Univ Coll Mat Fujian Key Lab Surface & Interface Engn High Perfo Xiamen 361005 Peoples R China Xiamen Univ Xiamen Key Lab High Performance Met & Mat Xiamen 361005 Peoples R China Harbin Inst Technol State Key Lab Adv Welding & Joining Shenzhen 518055 Peoples R China Harbin Inst Technol Inst Mat Genome & Big Data Shenzhen 518055 Peoples R China Shenzhen R&D Ctr Al Based Hydrogen Hydrolysis Mat Shenzhen 518055 Peoples R China

In recent years, the hydrolysis of Al-based composite powders to produce hydrogen has become a hot topic in the field of hydrogen energy research. However, the hydrogen generation products of Al-based alloys have not been reasonably utilized. For this purpose, this study proposed a novel research idea to achieve the integrated design of hydrogen production and thermal energy storage functions of Al-based composite powders. Specif-ically, Al-Bi-Cu composite powders with stable hydrogen production were taken as research objects. The hydrogen was obtained by the reaction of Al-Bi-Cu alloy powders with H2O for different reaction times, and then the hydrogen generation products were directly sintered at high temperature to obtain Al-Cu alloy based composite phase change thermal energy storage materials. The results indicated that at 50 degrees C, the hydrogen yield of Al-Bi-Cu alloy powders in 100min, 200min and 400min are 319.9 mL/g, 428.5 mL/g and 665.8 mL/g, respectively. Importantly, the Al-Cu alloy based composite phase change thermal energy storage materials prepared by the hydrogen generation products exhibited an adjustable phase change temperature (577.3 degrees C -598.2 degrees C), high thermal energy storage density (44.1J/g -153.5J/g), good thermal cycling stability and structural stability.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Al-Bi-Cu composite powders Thermal energy storage Hydrogen production Phase change materials

来源：评论

学校读者我要写书评

暂无评论

Microstructure, phase compositions, and coercivity evolution in micron-thick SmCo-based permanent magnetic films

引用

JOUrNAL OF ALLOYS ANd COMPOUNdS 2025年 1010卷

作者： Hong, Yuan Gong, Yansong Qiu, Zhaoguo Zheng, Xinrui Meng, Hongxia Zheng, Zhigang Chen, deyang Liu, Haoliang Xia, Weixing Zeng, dechang Liu, J. Ping South China Univ Technol Sch Mat Sci & Engn Guangzhou 510640 Peoples R China Univ Grenoble Alpes Grenoble INP Inst Neel F-38000 Grenoble France South China Univ Technol Gent Mat Surface Technol Guangdong Co Ltd Zhongshan R&D Ctr Mat Surface & Thin Films Technol Zhongshan 528437 Peoples R China South China Normal Univ Inst Adv Mat South China Acad Adv Optoelect Guangzhou 510006 Peoples R China Harbin Inst Technol Shenzhen Sch Sci Guangdong Prov Key Lab Semicond Optoelect Mat & Intelligent Photon Syst Shenzhen 518055 Peoples R China Chinese Acad Sci Ningbo Inst Mat Technol & Engn Lab Rare Earth Magnet Funct Mat Ningbo 315201 Peoples R China Univ Texas Arlington Dept Phys Arlington TX 76019 USA

Permanent magnetic thick films are increasingly used in Micro-Electro-Mechanical Systems (MEMS) devices, but the interplay between magnetic properties, microstructure, and film thickness remains underexplored. We deposited SmCo-based films with thicknesses ranging from 350 nm to 1300 nm using magnetron sputtering at room temperature, followed by in-situ annealing. Our study examined the evolution of microstructure, phase composition, magnetic properties, and domain structures as thickness increases. The films displayed dense, fibrous structures typical of the zone T-type region, with 3d morphologies forming a network structure and an arc-shaped surface that expands with thickness. At thinner levels (around 350 nm), an amorphous SmCo phase predominates, prone to oxidation, while at greater thicknesses, the SmCo5 phase dominates but maintains a grain size of 12-15 nm. Coercivity decreases significantly from 33 kOe to 8 kOe as thickness increases from 630 to 1300 nm due to the diminishing pinning effect and dominance of the reversal domain nucleation mechanism. Analysis using magnetic force microscopy and micromagnetic simulations indicates that this reduction in coercivity is mainly due to the decomposition of the SmCo5 phase and a reduction in magnetic domain size.

关键词： SmCo-based films Magnetic coercivity Microstructure evolution Magnetron sputtering Micromagnetic simulation

来源：评论

学校读者我要写书评

暂无评论

A brief strategy for designing self-encapsulated Al-Si base phase change materials with high thermal energy storage performance

引用

JOUrNAL OF ENErGY STOrAGE 2023年 62卷

作者： Wang, Cuiping Huang, Yan Wei, Haiting Yu, Fangzheng Wang, Mingshuai Guo, Yihui Zhang, Jinbin deng, rui Yang, Shuiyuan Liu, Xinjun Xiamen Univ Coll Mat Xiamen 361005 Peoples R China Xiamen Univ Fujian Key Lab Surface & Interface Engn High Perfo Xiamen 361005 Peoples R China Xiamen Univ Xiamen Key Lab High Performance Met & Mat Xiamen 361005 Peoples R China Harbin Inst Technol Sch Mat Sci & Engn Shenzhen 518055 Peoples R China Harbin Inst Technol Inst Mat Genome & Big Data Shenzhen 518055 Peoples R China Shenzhen R&D Ctr Al Based Hydrogen Hydrolysis Mat Shenzhen 518055 Peoples R China

This paper reports a brief strategy for self-encapsulated Al-Si base phase change materials with high thermal energy storage performance using the hydrogen generation products of Al-Bi-Si alloy composite powders. Firstly, Al-10Bi-4Si (wt%) alloy composite powders were prepared through high-pressure gas atomization processing. These composite powders were hydrolyzed in distilled water at 40 degrees C for producing hydrogen. Secondly, hy-drolysis products were calcined under high-temperature nitrogen to prepare Al-Si base phase change materials with an Al2O3 protective layer. The results show that hydrogen generation products still maintain good sphericity after the hydrolysis reaction, which is conducive to obtaining a large amount of Al-Si thermal energy storage medium. The prepared materials have a thermal energy storage density of 117.3 J/g-240 J/g. In the hydrolysis reaction, the powder surface can continuously react with water, forming an Al(OH)3 layer that tightly covers the unreacted part of the powder. After calcination, the formation of the Al2O3 layer realizes the self-encapsulation of phase change materials. during thermal cycles, the Al2O3 protective layer of the phase change materials has a strong ability to withstand thermal stress which is caused by volume expansion at high temperatures;this maintains good thermal energy storage performance under thermal cycles over hundreds of hours. This research is expected to provide a basis for the large-scale production of Al-Si base phase change materials and obtain hydrogen energy during this process.

关键词： Hydrogen generation products Al 2 O 3 protective layer Al -Si base phase change materials Thermal energy storage performance

来源：评论

学校读者我要写书评

暂无评论

Effect of Fe on the Hydrogen Production Properties of Al-Bi-Sn Composite Powders

引用

MATErIALS 2022年第19期15卷 6702-6702页

作者： Wang, Cuiping Yin, Bohao Lin, Kairui Wang, Mingshuai deng, rui Guo, Yihui Zhang, Jinbin Yang, Shuiyuan Liu, Xingjun Xiamen Univ Coll Mat Fujian Key Lab Surface & Interface Engn High Perf Xiamen 361005 Peoples R China Xiamen Univ Xiamen Key Lab High Performance Met & Mat Xiamen 361005 Peoples R China Harbin Inst Technol Inst Mat Genome & Big Data Sch Mat Sci & Engn Shenzhen 518055 Peoples R China Shenzhen R&D Ctr Al Based Hydrogen Hydrolysis Mat Shenzhen 518055 Peoples R China

Fe additives may play an important role in the preparation of aluminum-based hydrolysis hydrogen powder, with high hydrogen yield, low cost, and good oxidation resistance. Therefore, it is necessary to ascertain the effect of Fe on the hydrogen production performance of Al-Bi-Sn composite powders. According to the calculated vertical cross-section of the Al-10Bi-7Sn-(0 similar to 6)Fe (wt.%) quasi-binary system, Al-10Bi-7Sn-xFe (x = 0, 0.5, 1.5, 3) wt.% composite powders for hydrogen production were prepared by the gas-atomization method. The results showed that the Al-10Bi-7Sn-1.5Fe (wt.%) powder exhibited an extremely fast hydrogen generation rate at 50 degrees C, which reached 1105 mL.g(-1) in 27 min in distilled water, 1086 mL.g(-1) in 15 min in 0.1 mol.L-1 NaCl solution, and 1086 mL.g(-1) in 15 min in 0.1 mol.L-1 CaCl2 solution. In addition, the antioxidant properties of these powders were also investigated. The results showed that the hydrogen production performance of the Al-10Bi-7Sn-1.5Fe (wt.%) powder could retain 91% of its hydrogen production activity, even though the powder was exposed to 25 degrees C and 60 rH% for 72 h. The addition of Fe not only promoted the hydrogen generation rate of the Al-Bi-Sn composite powders, but also improved their oxidation resistance. The Al-10Bi-7Sn-1.5Fe (wt.%) composite powder shows great potential for mobile hydrogen source scenarios with rapid hydrogen production.

关键词： hydrolysis reaction hydrogen generation gas atomization Al-based powder

来源：评论

学校读者我要写书评

暂无评论

Interfacial Covalent Bonding Endowing Ti3C2-Sb2S3 Composites High Sodium Storage Performance

引用

SMALL 2022年第3期18卷 2104293-2104293页

作者： Wang, Hui Song, Xiaolan Lv, Miao Jin, Shengming Xu, Jianlong Kong, Xiaodong Li, Xingyun Liu, Zhiliang Chang, Xinghua Sun, Wei Zheng, Jie Li, Xingguo Cent South Univ Key Lab Mineral Mat & Applicat Hunan Prov Sch Mineral Proc & Bioengn Changsha 410083 Peoples R China Shanghai IC R&D Ctr Shanghai 201210 Peoples R China Soochow Univ Inst Funct Nano & Soft Mat FUNSOM Jiangsu Key Lab Carbon Based Funct Mat & Devices Suzhou 215123 Peoples R China Qingdao Univ Inst Mat Energy & Environm Qingdao 266071 Peoples R China BTR New Mat Grp Co Ltd Shenzhen 518106 Peoples R China Harbin Engn Univ Key Lab Superlight Mat & Surface Technol Minist Educ Coll Mat Sci & Chem Engn Harbin 150001 Peoples R China Peking Univ Beijing Natl Lab Mol Sci BNLMS Coll Chem & Mol Engn Beijing 100871 Peoples R China

Antimony sul?de is attracting enormous attention due to its remarkable theoretical capacity as anode for sodium-ion batteries (SIBs). However, it still suffers from poor structural stability and sluggish reaction kinetics. Constructing covalent chemical linkage to anchor antimony sul?de on two-dimension conductive materials is an effective strategy to conquer the challenges. Herein, Ti3C2-Sb2S3 composites are successfully achieved with monodispersed Sb2S3 uniformly pinned on the surface of Ti3C2Tx MXene through covalent bonding of Ti-O-Sb and S-Ti. Ti3C2Tx MXene serves as both charge storage contributor and flexible conductive buffer to sustain the structural integrity of the electrode. Systematic analysis indicates that construction of efficient interfacial chemical linkage could bridge the physical gap between Sb2S3 nanoparticles and Ti3C2Tx MXene, thus promoting the interfacial charge transfer efficiency. Furthermore, the interfacial covalent bonding could also effectively confine Sb2S3 nanoparticles and the corresponding reduced products on the surface of Ti3C2Tx MXene. Benefited from the unique structure, Ti3C2-Sb2S3 anode delivers a high reversible capacity of 475 mAh g(-1) at 0.2 A g(-1) after 300 cycles, even retaining 410 mAh g(-1) at 1.0 A g(-1) after 500 cycles. This strategy is expected to shed more light on interfacial chemical linkage towards rational design of advanced materials for SIBs.

关键词： density functional theory calculation interfacial covalent bonding sodium ion battery surface confinement Ti C-3 (2)-Sb S-2 (3) composites

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional bioglass-collagen-phosphatidylserine scaffolds designed with functionally graded structure and mechanical features

引用

BIOMEdICAL ENGINEErING-BIOMEdIZINISCHE TECHNIK 2018年第3期63卷 255-259页

作者： Yang, Chunrong Wu, Huazhong Chen, Shou Kang, Guangyu Fujian Univ Technol Sch Mat Sci & Engn Fuzhou 350118 Fujian Peoples R China Fujian Prov Key Lab Adv Mat Proc & Applicat Fuzhou 350118 Fujian Peoples R China Univ Minjiang Dept Chem & Chem Engn Fuzhou 350118 Fujian Peoples R China Shenzhen 863 Program R&D Ctr Surface Technol Shenzhen 518100 Peoples R China

The development of scaffolds featuring spatiotemporal controlled release of drugs is highly desirable. The goal of this study is to construct an inhomogeneous scaffold with gradient pore structure from top layer to bottom layer. The scaffolds were prepared using bioglass (BG), phosphatidylserine (PS) and steroidal saponins (SS) loaded collagen (COL) microparticles as the main components. The resulting scaffold constructs were characterized in terms of their morphology, drug release kinetics and mechanisms, as well as macroscopic form stability and mechanical properties. Pore interconnectivity and graded distribution were demonstrated using scanning electron microscopy (SEM). Such constructs have been further shown to be advantageous for temporal and spatial control of drug release and deposition in the scaffolds, with a potential to repair bone defect more precisely and effectively. Changes in the BG content resulted in distinct macroscopic form stability and mechanical properties to scaffolds. An increase in the BG content in scaffolds led to less volume swell as well as higher ultimate strength and compressive modulus, which makes the scaffolds mechanically adjustable according to certain structures and properties of different bone defect sites. The developed scaffolds may show promise for promoting bone tissue regeneration.

关键词： bone controlled drug delivery scaffolds

来源：评论

学校读者我要写书评

暂无评论

An internal recycling mechanism between ammonia/ammonium and nitrate driven by ammonia-oxidizing archaea and bacteria (AOA, AOB, and Comammox) and dNrA on Angkor sandstone monuments

引用

INTErNATIONAL BIOdETErIOrATION & BIOdEGrAdATION 2021年 165卷 105328-105328页

作者： ding, Xinghua Lan, Wensheng Li, Yiliang Yan, Aixin Katayama, Yoko Koba, Keisuke Makabe, Akiko Fukushima, Keitaro Yano, Midori Onishi, Yuji Ge, Qinya Gu, Ji-dong Univ Hong Kong Sch Biol Sci Lab Environm Microbiol & Toxicol Pokfulam Rd Hong Kong Peoples R China Shenzhen Acad Inspect & Quarantine Food Inspect & Quarantine Ctr Shenzhen Customs Shenzhen R&D Key Lab Alien Pest Detect Technol 1011 Fuqiang Rd Shenzhen 518045 Peoples R China Univ Hong Kong Dept Earth Sci Pokfulam Rd Hong Kong Peoples R China Tokyo Univ Agr & Technol Inst Agr Fuchu Tokyo 1838509 Japan Tokyo Natl Res Inst Cultural Properties Taito Ku 13-43 Ueno Pk Tokyo 1108713 Japan Kyoto Univ Ctr Ecol Res Otsu Shiga 5202113 Japan Japan Agcy Marine Earth Sci & Technol Inst Extra Cutting Edge Sci & Technol Avant Garde Super Cutting Edge Grand & Adv Res SUGAR Program Yokosuka Kanagawa 2370061 Japan Chinese Acad Cultural Heritage 2 Gaoyuan St Beijing 100029 Peoples R China Guangdong Technion Israel Inst Technol Environm Sci & Engn Res Grp 241 Daxue Rd Shantou 515063 Guangdong Peoples R China

The ancient Angkorian sandstone monuments in Cambodia are well known for biodeterioration of the sandstone under tropic climate. This study examined ammonia oxidizing bacteria (AOB and Comammox) and archaea (AOA) in stone-dwelling microbiome from three important Angkor monuments, namely Angor Wat, Bayon of Angkor Thom, and Preah Vihear, by dNA-based metagenomics analysis, rNA-based functional gene reverse transcriptional (rT)-qPCr quantification, and N-15 isotope analysis. Our metagenomics datasets on these three monuments reveal a rich microbiome and abundant microbial nitrogen transforming reactions of ammonia oxidation and nitrite oxidation, Comammox and dissimilatory nitrate reduction to ammonium (dNrA), and these results support an internal recycling mechanism between ammonia/ammonium and nitrate by AOA, AOB, Comammox and dNrA on the stone monuments to support the microbial community. Though a wide range of AOB and AOA lineages together with Comammox were retrieved from these metagenomes as the potential ammonia-oxidizers, only AOA and Comammox were most abundant, likely to contribute to the biochemical processes of ammonia oxidation. The rNA-based qPCr quantification of the functional gene amoA in this study showed that AOA were the more active ammonia oxidizers over AOB in the microbiome of these Angkor sandstone monuments. In addition, a rich population of nitrite/nitrate producing AOA and Comammox drove the sequestration of CO2 onto the stone and this process was in turn supported by dNrA to provide the substrate ammonia/ammonium for a further cyclic reaction to take place continuously between ammonia/ammonium and nitrate. This model is further supported by the high enrichment of stable isotope N-15 signature of NO3- in sandstone surface biofilms. The findings of this study are insightful for elucidation of nitrate accumulation by an internal N cycling mechanism proposed, and are important for understanding the sustainable microbial community and protection

关键词： Ammonia oxidizing archaea Ammonia oxidizing bacteria dissimilatory nitrate reduction to ammonia Comammox Nitrogen cycle Stone Biodeterioration

来源：评论

学校读者我要写书评

暂无评论

Comparison of rNA-seq and microarray-based models for clinical endpoint prediction

引用

GENOME BIOLOGY 2015年第1期16卷 133-133页

作者： Zhang, Wenqian Yu, Ying Hertwig, Falk Thierry-Mieg, Jean Zhang, Wenwei Thierry-Mieg, danielle Wang, Jian Furlanello, Cesare devanarayan, Viswanath Cheng, Jie deng, Youping Hero, Barbara Hong, Huixiao Jia, Meiwen Li, Li Lin, Simon M. Nikolsky, Yuri Oberthuer, Andre Qing, Tao Su, Zhenqiang Volland, ruth Wang, Charles Wang, May d. Ai, Junmei Albanese, davide Asgharzadeh, Shahab Avigad, Smadar Bao, Wenjun Bessarabova, Marina Brilliant, Murray H. Brors, Benedikt Chierici, Marco Chu, Tzu-Ming Zhang, Jibin Grundy, richard G. He, Min Max Hebbring, Scott Kaufman, Howard L. Lababidi, Samir Lancashire, Lee J. Li, Yan Lu, Xin X. Luo, Heng Ma, Xiwen Ning, Baitang Noguera, rosa Peifer, Martin Phan, John H. roels, Frederik rosswog, Carolina Shao, Susan Shen, Jie Theissen, Jessica Tonini, Gian Paolo Vandesompele, Jo Wu, Po-Yen Xiao, Wenzhong Xu, Joshua Xu, Weihong Xuan, Jiekun Yang, Yong Ye, Zhan dong, Zirui Zhang, Ke K. Yin, Ye Zhao, Chen Zheng, Yuanting Wolfinger, russell d. Shi, Tieliu Malkas, Linda H. Berthold, Frank Wang, Jun Tong, Weida Shi, Leming Peng, Zhiyu Fischer, Matthias BGI Shenzhen Shenzhen 518083 Guangdong Peoples R China Fudan Univ Sch Life Sci Collaborat Innovat Ctr Genet & Dev State Key Lab Genet Engn Shanghai 201203 Peoples R China Fudan Univ Sch Life Sci MOE Key Lab Contemporary Anthropol Shanghai 201203 Peoples R China Fudan Univ Sch Pharm Shanghai 201203 Peoples R China Univ Childrens Hosp Cologne Dept Pediat Oncol & Hematol D-50924 Cologne Germany Univ Cologne Fac Med Ctr Mol Med CMMC D-50924 Cologne Germany NIH NCBI Bethesda MD 20894 USA Eli Lilly & Co Res Informat Lilly Corp Ctr Indianapolis IN 46285 USA FBK I-38123 Trento Povo TN Italy AbbVie Inc Global Pharmaceut R&D Souderton PA 18964 USA GlaxoSmithKline Discovery Analyt Collegeville PA 19426 USA Rush Univ Ctr Canc Dept Internal Med Chicago IL 60612 USA US FDA Natl Ctr Toxicol Res Jefferson AR 72079 USA SAS Inst Inc Cary NC 27513 USA Marshfield Clin Res Fdn Biomed Informat Res Ctr Marshfield WI 54449 USA Thomson Reuters IP & Sci Carlsbad CA 92008 USA Loma Linda Univ Ctr Genom Loma Linda CA 92350 USA Loma Linda Univ Sch Med Div Microbiol & Mol Genet Loma Linda CA 92350 USA GeorgiaTech Dept Biomed Engn Atlanta GA 30332 USA Emory Univ Atlanta GA 30332 USA CRI CBC Fdn Edmund Mach San Michele All Adige TN Italy Childrens Hosp Los Angeles Los Angeles CA 90027 USA Schneider Childrens Med Ctr Israel Felsenstein Med Res Ctr Dept Pediat Hematol Oncol Mol Oncol IL-49202 Petah Tiqwa Israel Marshfield Clin Res Fdn Ctr Human Genet Marshfield WI 54449 USA German Canc Res Ctr Dept Theoret Bioinformat D-69120 Heidelberg Germany Univ Nottingham Queens Med Ctr Childrens Brain Tumour Res Ctr Nottingham NG7 2UH England US FDA Ctr Biol Evaluat & Res Rockville MD 20852 USA AbbVie Inc Global Pharmaceut Res & Dev Abbott Pk IL 60064 USA Univ Arkansas UALR UAMS Joint Bioinformat Grad Program Little Rock AR 72204 USA Eli Lilly & Co Lilly Corp Ctr Discovery Stat Indianapolis IN 46285 USA Univ Valencia Sch Med Dept Pathol Valencia 46010 Spain Un

Background: Gene expression profiling is being widely applied in cancer research to identify biomarkers for clinical endpoint prediction. Since rNA-seq provides a powerful tool for transcriptome-based applications beyond the limitations of microarrays, we sought to systematically evaluate the performance of rNA-seq-based and microarray-based classifiers in this MAQC-III/SEQC study for clinical endpoint prediction using neuroblastoma as a model. results: We generate gene expression profiles from 498 primary neuroblastomas using both rNA-seq and 44 k microarrays. Characterization of the neuroblastoma transcriptome by rNA-seq reveals that more than 48,000 genes and 200,000 transcripts are being expressed in this malignancy. We also find that rNA-seq provides much more detailed information on specific transcript expression patterns in clinico-genetic neuroblastoma subgroups than microarrays. To systematically compare the power of rNA-seq and microarray-based models in predicting clinical endpoints, we divide the cohort randomly into training and validation sets and develop 360 predictive models on six clinical endpoints of varying predictability. Evaluation of factors potentially affecting model performances reveals that prediction accuracies are most strongly influenced by the nature of the clinical endpoint, whereas technological platforms (rNA-seq vs. microarrays), rNA-seq data analysis pipelines, and feature levels (gene vs. transcript vs. exon-junction level) do not significantly affect performances of the models. Conclusions: We demonstrate that rNA-seq outperforms microarrays in determining the transcriptomic characteristics of cancer, while rNA-seq and microarray-based models perform similarly in clinical endpoint prediction. Our findings may be valuable to guide future studies on the development of gene expression-based predictive models and their implementation in clinical practice.

关键词： Overall Survival Neuroblastoma Prediction Performance Clinical Endpoint Gene Expression Model

来源：评论

学校读者我要写书评

暂无评论

Mechanical Properties of TiN Coating on Nanocrystalline surface Layer of 304 Stainless Steel

引用

稀有金属材料与工程 2012年第S1期41卷 85-88页

作者： Wang Changpeng Zhou Yimin Zhu Xiaodong Fu Tao Ma Shengge Xi An Jiao Tong Univ Sch Life Sci & Technol State Key Lab Mech Behav Mat Xian 710049 Peoples R China Xi An Jiao Tong Univ Minist Educ Key Lab Biomed Informat Engn Xian 710049 Peoples R China Shenzhen 863 Program Mat Surface Technol R&D Ctr Shenzhen 518029 Peoples R China

surface nanocrystallization(SNC)can markedly improve surface mechanical properties of metallic materials and accelerate thermal diffusion of elemental *** this work we study the effects of SNC on structure and mechanical properties of TiN coating on 304 stainless steel *** steel was subjected to 15 min surface mechanical attrition treatment(SMAT)to obtain a nanocrystalline surface layer with thickness about 30μ*** coating was deposited on the surface nanocrystallized and the coarse-grained steel substrates by multi-arc ion plating.X-ray diffraction shows that TiN(111)orientation of the coating is much reduced due to SNC *** tests show that the nanocrystalline surface layer has obviously increased surface hardness of the coating system;toughness and adhesion of the coating,impact resistance of the coating system are also *** of SNC-hard coating processing over the conventional duplex treatment consisting of thermal diffusion process-hard coating are shortly discussed.

关键词： surface nanocrystallization stainless steel hard coating duplex treatment

来源：评论

学校读者我要写书评

暂无评论

Sol-gel derived TiO₂ coating on plasma nitrided 316L stainless steel

引用

VACUUM 2012年第9期86卷 1402-1407页

作者： Fu, T. Wen, C. S. Lu, J. Zhou, Y. M. Ma, S. G. dong, B. H. Liu, B. G. Xi An Jiao Tong Univ Sch Life Sci & Technol Key Lab Biomed Informat Engn Minist Educ Xian 710049 Peoples R China City Univ Hong Kong Dept Mech & Biomed Engn Kowloon Hong Kong Peoples R China Shenzhen 863 Program Mat Surface Technol R&D Ctr Shenzhen 518029 Peoples R China

Titania film is coated on plasma nitrided 316L stainless steel by sol-gel method. Crystallization of titania as well as N loss and formation of Fe2O3 occurs during the annealing heat treatment. The titania film has short cracks within the grooves of plasma etched grain boundaries. With the increase of annealing temperature and duration, surface hardness of the samples is increased, but the toughness is decreased due to oxidization of the surface layer. The coating sample heat treated at 350 degrees C for 10 min and 450 degrees C for 10 min has better corrosion resistance than the nitrided stainless steel tested by the potentiodynamic polarization in 0.9% NaCl solution. Water contact angle of the titania film on the rough nitrided steel substrate decreases with UV irradiation treatment, reaching 17 degrees after 3 h treatment. (C) 2012 Elsevier Ltd. All rights reserved.

关键词： Stainless steel Nitriding TiO2 Sol-gel Corrosion resistance Hydrophilicity

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：