SiC颗粒表面处理对SiC/Cu复合材料性能的影响
Effect of Surface Treatment of SiC Particles on Properties of SiC/Cu Composites
摘 要
将SiC颗粒在1 100℃和空气气氛下锻烧6 h得到氧化态的SiC颗粒,在5%HF酸中浸泡24 h得到酸洗过的SiC颗粒;然后采用非均相沉淀包裹法制得铜包裹不同状态SiC复合粉体,采用热压烧结工艺制备了含有35%SiC(体积分数)的SiC/Cu复合材料;对复合材料的微观结构和性能进行了研究和分析.结果表明:与原始态SiC颗粒的复合材料相比,对SiC颗粒进行高温氧化和酸洗后使得SiC/Cu复合材料具有不同的界面结合状态,均能提高复合材料的强度和硬度,酸洗态SiC颗粒制备的复合材料强度和硬度均最高.
SiC/Cu复合材料
热压烧结
surface treatment
SiC/Cu composite
hot pressing sintering
Abstract
SiC particles were calcined at 1 100℃ in air atmosphere for 6 h to obtain oxidized SiC particles and then immersed in aqueous solution of 5% hydrofluoric acid for 24 h to attain acid-etched SiC particles.Cu coated SiC composite powders were prepared by heterogeneous precipitation coated method and hot pressing sintering was used to prepare SiC/Cu composites with 35vol% SiC particles.The microstructure and properties of the composites were analyzed.The results show that compared with the composites prepared with original SiC particles,the composites made by high-temperature oxidations and acid-etched SiC particles exhibited different interfacial bonding states with the increase of strength and hardness.The composites made by acid-etched SiC particles had the highest strength and the highest hardness.
中图分类号 TB333
所属栏目 新材料 新工艺
基金项目 河南省杰出青年科学基金资助项目(512002200);河南省高校青年骨干教师资助计划项目(2002年度);河南省重点科技攻关项目(82102230021);河南工业大学博士基金资助项目(2008BS001)
收稿日期 2009/8/12
修改稿日期 2010/5/21
网络出版日期
作者单位点击查看
备注王春华(1965-),男,河南上蔡人,副教授,博士.
引用该论文: WANG Chun-hua,FAN Xue-qin,GUAN Shao-kang,ZHANG Rui. Effect of Surface Treatment of SiC Particles on Properties of SiC/Cu Composites[J]. Materials for mechancial engineering, 2010, 34(10): 36～39
王春华,樊雪琴,关绍康,张锐. SiC颗粒表面处理对SiC/Cu复合材料性能的影响[J]. 机械工程材料, 2010, 34(10): 36～39
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参考文献
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【3】DELANNAY F,FROYEN L,DERUYTTERE A.Review: the wetting of solids by molten metals and its relation to the preparation of metal-matrix composites[J].J Mater Sci,1987,22(1):1-16.
【4】ZHANG R,GAO L,GUO J K.Influence of Cu2O on interface behavior of copper/SiCp composites prepared by spark plasma sintering[J].J Am Ceram Soc,2004,87(2):302-304.
【5】ZHANG R,GAO L,GUO J K.Preparation and characterization of coated nanoscale Cu/SiCp composites particle[J].Ceram Inter,2004,30(3):401-404.
【6】张锐,高廉,郭景坤.非均相沉淀制备Cu包裹纳米SiC复合粉体颗粒[J].无机材料学报,2003,18(3):575-579.
【7】RATNAPARKHI P L,HOWE J M.Structure and mechanism of bonding at a diffusion-bonded Al/SiC interface[J].Acta Metall,1994,42(3):811-823.
【8】HE J Y,PONTON C B.Oxidation of SiC powders for the preparation of SiC/mullite/alumina nanocomposites[J].J Mater Sci,2008,43(12):4031-4041.
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