Fractal dimension for porous metal materials of FeCrAl fiber

作     者：王建忠 奚正平 汤慧萍 黄卫东 朱纪磊 敖庆波 Jian-zhong WANG;Zheng-ping XI;Hui-ping TANG;Wei-dong HUANG;Ji-lei ZHU;Qing-bo AO

作者机构：西北有色金属研究院金属多孔材料国家重点实验室西安710016 西北工业大学材料科学与工程学院西安710072 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第4期

页      面：1046-1051页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project(2011CB610302) supported by the National Basic Research Program of China Projects(51074130,51134003) supported by the National Natural Science Foundation of China Project(20110491699) supported by the National Science Foundation for Post-doctoral Scientists of China 

主　　题：porous metal materials FeCrA1 fiber fractal dimension porosity magnification 

摘      要：The FeCrA1 fiber was used to prepare porous metal materials with air-laid technology, and then followed by sintering at 1300 ℃ for a holding period of 2 h in the vacuum. In addition, a novel fractal soft, which was developed based on the fractal theory and the computer image processing technology, was explored to describe the pore structure of porous metal materials. Furthermore, the fractal dimension of pore structure was calculated by the soft and the effects of magnification and porosity on ffactal dimension were also discussed. The results show that the fractal dimension decreases with increase in the magnification, while it increases continuously with the porosity enhancing. The interrelationship between the fractal dimension and the magnification or porosity can be presented by the equation of D=α_0exp（-x/α_1）＋α_2和D=k_2-（k_1-k_2）/[1＋exp（（θ-k_0）/k_3）], respectively.