Improving hydroxyapatite coating ability on biodegradable metal through laser-induced hydrothermal coating in liquid precursor:Application in orthopedic implants

作     者：Jaeho Park Seung-Hoon Um Youngmin Seo Jaehong Lee Yu-Chan Kim Myoung-Ryul Ok Suk-Won Hwang Jeong-Yun Sun Hyung-Seop Han Hojeong Jeon 

作者机构：Biomaterials Research CenterBiomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul02792South Korea Department of Materials Science and EngineeringSeoul National University(SNU)Seoul08826South Korea Division of Biomedical Science and TechnologyKIST SchoolKorea University of Science and TechnologySeoul02792South Korea KU-KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841South Korea 

出 版 物：《Bioactive Materials》 (生物活性材料（英文）)

年 卷 期：2023年第25卷第7期

页      面：796-806页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was supported by a National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)[grant number 2020R1A2C2010413] Korea Research Council[grant number NRF-2021K1A3A1A74095929] KIST project[grant number 2E31641] KU-KIST Graduate School of Converging Science and Technology Program 

主　　题：Biodegradable metal HAp coating Nanosecond laser Photothermal synthesis Soret effect(thermophoresis) 

摘      要：During the past decade,there has been extensive research toward the possibility of exploring magnesium and its alloys as biocompatible and biodegradable materials for implantable *** practical medical application,however,has been limited to specific areas owing to rapid corrosion in the initial stage and the consequent *** coatings can significantly reduce the initial corrosion of Mg alloys,and several studies have been carried out to improve the adhesion strength of the coating to the surfaces of the *** composition of hydroxyapatite(HAp)is very similar to that of bone tissue;it is one of the most commonly used coating materials for bone-related implants owing to favorable osseointegration *** this study,HAp was coated on Mg using nanosecond laser coating,combining the advantages of chemical and physical *** heat generated in the liquid precursor by the laser improved the adhesion of the coating through the precipitation and growth of HAp at the localized nanosecond laser focal area and increased the corrosion resistance and cell adhesion of *** physical,crystallographic,and chemical bondings were analyzed to explore the mechanism through which the surface adhesion between Mg and the HAp coating layer *** applicability of the coating to Mg screws used for clinical devices and improvement in its corrosion property were *** liquid environment-based laser surface coating technique offers a simple and quick process that does not require any chemical ligands,and therefore,overcomes a potential obstacle in its clinical use.