Dry friction and wear performance of SiC 3D continuousceramic frame reinforced 7075Al alloy

来源期刊:中国有色金属学报(英文版)2010年第1期

论文作者:黄丹 陈维平 章少阳 何曾先

文章页码:54 - 58

Key words:continuous reinforcement; Al-based composite; wear behavior; dry friction

Abstract: The dry friction and wear behavior of 7075 Al alloy reinforced with SiC 3D continuous ceramic network against Cr12 steel was studied with oscillating dry friction and wear tester under the testing conditions of 70 ℃, 30 min, and the load range of 40-100 N. The experimental result shows that the characteristic of abrasive wear and oxidation wear mechanisms are present for 3D continuous SiC/7075 Al composite. 3D continuous network ceramic as the reinforcement can avoid composite from the third body wear that usually occurs in traditional particle reinforced composite. Under low load, the composite with low volume fraction of ceramic reinforcement exhibits better wear resistance due to the homogeneous reinforcement distribution with small pore size; on the contrary, under high load, the composite with high reinforcement volume fraction exhibits better wear resistance because of the coarse frame size. Hard SiC frame leads to the wear of Cr12 steel mainly. The frame with high volume fraction corresponds to the high Fe content.

基金信息:the National Natural Science Foundation of China
the Natural Science Foundation of Guangdong Province, China

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