【摘 要】
：
To improve the rail performance of the electromagnetic launcher, Cu-Al2O3-Gr wear prepared by reaction milling technique. The effects of Gr and Al2O3 content on the density, hardness and bending stren
【机 构】
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National Key Libratory of Remanufacture Engineering, Beijing 100072, China;Department of Equipment M
【出 处】
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第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
To improve the rail performance of the electromagnetic launcher, Cu-Al2O3-Gr wear prepared by reaction milling technique. The effects of Gr and Al2O3 content on the density, hardness and bending strength of the composite were studied. The results obtained show that: 1) When milling time no longer than 7.5h, Cu-2.52Al2O3-15Gr mixed powder become smaller and more homogenous with the increase of milling time; milling is favorable to the Gr powder refining, promote Gr distributed homogenously and strengthen the boundary between Gr powder and Cu-Al2O3 base. 2) With the increase of milling time(no longer than 7.5h), the relative density, hardness and bending strength the Cu-2.52Al2O3-15Gr composites gradually increase. 3) Gr and Al2O3 content in the Cu-Al2O3-Gr composite can change the friction and wear performance. When the content of Gr is 10%, the composite has the best wear resistant performance.
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