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【答案】应助回帖
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爱与雨下(金币+1): ！~ 2011-09-28 12:16:42
loevers(金币+15, 翻译EPI+1): 再次感谢野狼110，非常感谢！ 2011-09-28 12:49:31
1 Friction and wear properties of composite materials appearred slightly different with the accession of different types Mg2B2O5 whisker. under the same condition, the wear rate of substrate, bare whiskers , aluminum composite material coated with CuO and ZnO successively reduced.
2 Under dry friction condition,with the load and sliding speed increases, Friction coefficient of composite materials tend to be smaller, wear rate will be increased, Friction and wear mechanism gradually changed from adhesive wear in low-load and low speed to abrasive wear in high-speed and high load, associated with micro-fatigue wear in friction and wear process, three kinds of wear occurred simultaneously, alternating with each other.
3 Analyzed the worn surface of composite materials、 wear debris and morphology of friction surface by SEM, found that with the increasing rate of load and friction, it appears a large number of furrows, cracks and holes on wear surface , and typical mechanical mixed layer on the grinding surface. Wear debris gradually changed from small granular to thick sheet, adhesive material on the area tend to be smaller. |
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