热压烧结制备高密度钨铜合金
Hot-pressing Sintering of W-15Cu Alloy
摘 要
以用机械合金化法制备的超细W-15Cu复合粉末为原料,采用热压烧结工艺制备了高密度的W-15Cu合金,用扫描电镜、硬度仪、密度测试仪等研究了烧结工艺对合金组织和性能的影响.结果表明:采用高能球磨可以制备出钨晶粒镶嵌铜相中的复合粉末;采用热压烧结,在30 MPa、1 500 ℃×2 h的条件下,可以制备出相对密度99.8%、断裂强度1290.6 MPa、硬度 44.8 HRC的高密度钨铜合金.
机械合金化法
热压烧结
力学性能
W-15Cu
mechanical alloying
hot-pressing sintering
mechanical property
Abstract
W-15Cu composite powders prepared by mechanical alloying of raw powders were consolidated by hot-pressing sintering process,and the influences of sintering process on the properties of W-15Cu alloy were investigated.The microstructure and properties of the alloy were studied by using scanning electron microscopy (SEM),Vickers hardness tester,etc.The W grains were homogeneously dispersed in copper phase.W-15Cu alloy consolidated by hot-pressing sintering at temperature 1 500 ℃ for 2 hours and under a pressure of 30 MPa could reach 99.8% relative density,1290.6 MPa of transverse rupture strength (TRS) 44.8 HRC of Rockwell C hardness.
中图分类号 TF125.2 TG135.5
所属栏目
基金项目 武汉市青年科技晨光计划资助项目;武汉市攻关项目(20041003068-04);国家自然科学基金资助项目(50502026)
收稿日期 2006/4/3
修改稿日期 2006/6/12
网络出版日期
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备注史晓亮(1974-),男,黑龙江佳木斯人,副研究员,博士.
引用该论文: SHI Xiao-liang,SHAO Gang-qin,DUAN Xing-long,YANG Hua,WANG Tian-guo. Hot-pressing Sintering of W-15Cu Alloy[J]. Materials for mechancial engineering, 2007, 31(3): 37～39
史晓亮,邵刚勤,段兴龙,杨华,王天国. 热压烧结制备高密度钨铜合金[J]. 机械工程材料, 2007, 31(3): 37～39
被引情况:
【1】赵国璋, "用于X射线防护的天然橡胶/钨复合材料的制备及性能",机械工程材料 39, 48-53(2015)
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参考文献
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【3】陈文革.钨铜电触头材料的失效分析[J].机械工程材料,1998,22(5):45-48.
【4】林信平,曹顺华,李炯义,等.纳米晶W-25Cu复合粉末烧结行为的研究[J].中国钨业,2005,20(1):39-43.
【5】Kim Y D,Oh N L,Oh S T,et al.Thermal conductivity of W-Cu composites at various temperatures[J].Materials Letters,2001,51(5):420-24.
【6】Li B H,Kang Z Y,Chen W G,et al.Preparation of nanosized W/Cu composite powder by sol-gel technique[J].Rare Metals,2005,24(2):170-173.
【7】Yoon E S,Lee J S,Oh S T,et al.Microstructure and sintering behavior of W-Cu nanocomposite powder produced by thermo-chemical process[J].International Journal of Refractory Metals & Hard Materials,2002,20(3):201-206.
【8】Kim D G,Lee K W,Oh S T,et al.Preparation of W-Cu nanocomposite powder by hydrogen-reduction of ball-milled W and CuO powder mixture[J].Materials Letters,2004,58(7/8):1199-1203.
【9】程继贵,雷纯鹏,蒋阳,等.纳米W-Cu粉末的均相沉淀法制备及其烧结性能[J].中国有色金属学报,2005,15(1):89-93.
【10】周张健,葛昌纯,李江涛.热压法制备W-Cu功能梯度材料[J].材料科学与工艺,2000,8(1):52-54.
【11】Ryu S S,Kim Y D,Moon I H.Dilatometric analysis on the sintering behavior of nanocrystalline W-Cu prepared by mechanical alloying[J].Journal of Alloys and Compounds,2002,335(1/2):233-240.欢迎订阅欢迎投稿欢迎刊登广告和信息(下转第页)
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