ISSN: 1003-6326
CN: 43-1239/TG

Vol. 20    Special 2    July 2010

Microstructure of nickel foam/Mg double interpenetrating composites
ZHAO Long-zhi(赵龙志)1, 2, 3, ZHAO Ming-juan(赵明娟)2, LI Na(李 娜)2,
YAN Hong(闫 洪)1, ZHANG Jin-song(张劲松)4
(1. School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China;
2. Key Laboratory of Ministry of Education for Conveyance and Equipment, East China Jiaotong University,
Nanchang 330013, China;
3. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education,
Harbin Engineering University, Harbin 150001, China;
4. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Abstract: The magnesium matrix double interpenetrating composites reinforced by nickel foam were fabricated by pressureless infiltration technology. Then the morphology of the nickel reinforcement and the microstructures of composites were characterized by SEM. The results show that not only is the nickel foam reinforcement reticular in three dimensions, but also the struts of foam keep the network structure, which ensures that the Ni foam/Mg composites are double interpenetrating. The interface bonding of composites between magnesium matrix and nickel foam reinforcement is good, without reaction around the interface, which is the indispensable condition that advanced composites should possess. Magnesium matrix distributes in the windows of nickel foam, the triangle center holes and microhole of nickel struts, and the composites have double interpenetrating structure, which makes the composites have unique properties.
Key words: pressureless infiltration; nickel foam; double interpenetrating composites; interface bonding; fractograph
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)