宇航学报

宇航学报 ›› 2012, Vol. 33 ›› Issue (9): 1322-1326.doi: 10.3873/j.issn.1000-1328.2012.09.019

• 材料、结构与制造 • 上一篇    下一篇

(石墨+纳米SiCp)/Cu基复合材料的制备及性能研究

罗阳, 王桂松   

  1. （哈尔滨工业大学材料科学与工程学院，哈尔滨 150001）
  • 收稿日期:2011-06-29 修回日期:2011-08-22 出版日期:2012-09-15 发布日期:2012-09-14
  • 基金资助:
    黑龙江省博士后基金(LBH-Z10170)

The Synthesis and Mechanical Property of the (Graphite+Nano-SiCp)/Cu Composites

LUO Yang, WANG Guisong   

  1. (School of Material Science and Engineering, Harbin Institue of Technology, Harbin 150001, China)
  • Received:2011-06-29 Revised:2011-08-22 Online:2012-09-15 Published:2012-09-14

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摘要： 采用粉末冶金法制备(Gr+纳米SiCp)/Cu基复合材料，研究了不同球磨时间和球磨转速对球磨效果的影响，得到最佳球磨时间和速度为8小时和300r/min。球磨后在1143K和200MPa下采用热压烧结法处理2h，然后在1143K下进行热挤压，挤压比 16〖KG-*8〗∶〖KG-*4〗1 。采用SEM和TEM研究了不同石墨含量烧结态和挤压态复合材料的微观组织，测试了不同石墨含量的热挤压态复合材料的抗压强度。

关键词: (Gr+纳米SiCp)/Cu复合材料, 力学性能, 自润滑, 微观组织

Abstract: Metal matrix composites (MMCs) of (Gr+Nano-SiCp)/Cu can be prepared directly by powder metallurgy. The optimized time and the speed of ball milling are 8 hours and 300r/min. After ball milling ,the mixed powder can be formed by hot isostatic pressing (HIP) at about 1143K and 200MPa for 2 hours and then be extruded at 1143K with the squeeze ratio 16〖KG-*8〗∶〖KG-*5〗1 .The Microstructure of the material sintered and extruded are observed by using SEM and TEM. The bending strengths of MMCs with different content of graphite and
nano\|SiCp are tested.

Key words: (Gr+Nano-Sicp)/Cu composites, Mechanical property, Self-lubricant, Microstructure

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