内氧化法制备Al_2O_3/Cu复合材料的电蚀特性  

Electric Erosion Behaviors of Al_2O_3/Cu Composites Prepared by Internal Oxidation

作　　者：国秀花[1] 宋克兴[1] 郜建新[1] 刘瑞华[1] 

机构地区：[1]河南科技大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2007年第11期876-879,共4页Special Casting & Nonferrous Alloys

基　　金：河南省重点科技攻关资助项目(0523021500);河南科技大学重大预研科学研究基金资助项目(2005ZD003);河南省高校杰出科研人才创新工程资助项目(2007KYCX008);河南科技大学人才科学研究基金资助项目

摘　　要：以Cu2O为氧源,采用内氧化法制备了Al2O3/Cu复合材料,通过电火花试验研究了该复合材料的电蚀特性,并进行了微观组织结构分析。结果表明,采用内氧化法制备的Al2O3/Cu复合材料,在铜基体中弥散分布着纳米级的Al2O3颗粒;在基本保证与紫铜相同加工速度的前提下,Al2O3/Cu复合材料工具电极的相对损耗和工件表面粗糙度均小于紫铜工具电极,且在试验范围内Al2O3/Cu复合材料工具电极损耗和工具表面粗糙度均随Al2O3含量的增加而降低。Al2O3/Cu composites were prepared by internal oxidation with Cu2O oxidizer.The electric erosion behaviors of the composites were tested by electric sparking,and its microstructure was observed also.It was found that nano-Al2O3 particle is dispersively distributed into the Cu matrix of the internal oxidized prepared Al2O3/Cu composites.The tool-electrode wear rate and surface roughness of Al2O3/Cu composites are evidently superior to that of red copper in the condition of the same machining speeds,and they is decreased with the increase of Al2O3 particle content.

关 键 词：内氧化 AL2O3/CU复合材料 电蚀 电火花 

分 类 号：TB33[一般工业技术—材料科学与工程]