学术
摘 要:
采用内氧化法制备Al2O3／Cu复合材料，在自制电磨损试验机上评价Al2O3／Cu复合材料的磨损性能，采用扫描电子显微镜观察Al2O3／Cu复合材料的磨损表面形貌，用能谱仪对其磨损表面主要元素进行分析并探讨其磨损机制．结果表明：在相同试验条件下，Al2O3／Cu复合材料的磨损性能明显优于Cu-0．36Cr-0．06Zr合金，Cu-0．36Cr-0．06Zr合金的磨损率较0．40％Al2O3／Cu复合材料的磨损率高1倍多；在无加载电流条件下，Al2O3／Cu复合材料的磨损机制为粘着磨损和磨粒磨损；在载流条件下其磨损机制主要以粘着磨损为主，并随着电流强度的增加，粘着磨损程度加重，Al2O3／Cu复合材料表面的粘着物主要来自于铜基粉末冶金滑块；Cu-Cr-Zr合金在无加载电流条件下的磨损机制主要为粘着磨损和磨粒磨损，在载流条件下主要为粘着磨损、磨粒磨损及电烧蚀磨损．[著者文摘]
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文章出处:
《摩擦学学报》-2008年28卷1期 -83-87页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1004-0595（2008）01-0083-05
Electrical Sliding Wear Behavior of Al2O3/Cu Composite Prepared by Internal Oxidation
XU Xiao-feng, S0NG Ke-xing, LIU Rui-hua, GU0 Xiu-hua （ School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China）
Abstract:
Using self-made electric-tribo tester, electric-tribological behaviors of Al2O3/Cu composites by internal oxidation were investigated. The wear resistance of Al2O3/Cu composite was greatly superior to that of the commercial Cu-0.36Cr-0.06Zr alloy, the wear resistance of typical Al2O3/Cu composite with 0.4 wt% of A1203 was about 2 time better than that of Cu-0.36Cr-0.06Zr alloy. SEM and EDS analysis indicated that the wear machanism of the composites was adhesive wear with existance of current, while it was abrasive and adhesive wear with no-current. The increasement of current accelerated the adhasive wear.[著者文摘]
Key words:
Al2O3／Cu composite, internal oxidation, electrical sliding wear, wear mechanism
基金资助:
河南省高校杰出科研人才创新工程项目资助（2007KYCX008）;国家自然科学基金资助项目（50432020）;河南省高等学校青年骨干教师计划项目资助;河南省教育厅科技攻关项目资助（2007430004）;河南科技大学重大科技前期预研专项基金资助（2005ZD003）;河南科技大学人才科研基金资助（of023）;河南省基础与前沿项目资助（072300440110）.
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