CAJ | 학술논문

采用粉末冶金法制备 SiC/C-Cu 复合材料，研究 SiC 颗粒含量对该材料组织结构与物理性能的影响，并在HST-100载流摩擦磨损试验机上进行载流磨损试验，研究摩擦速度、电流密度与SiC颗粒含量对SiC/C-Cu复合材料磨损率的影响以及磨损机理的变化。结果表明：SiC颗粒均匀分布于铜基体中。随SiC含量增加，复合材料的硬度和孔隙率都逐渐增大，密度和导电率降低。添加SiC颗粒可增强C-Cu复合材料的抗磨损性能，材料的磨损率随摩擦速度和电流密度增加而增加，随SiC含量增加呈先降低后上升的趋势，含2%SiC(质量分数)的SiC/C-Cu 复合材料具有优异的抗载流磨损性能。添加 SiC 颗粒可减少摩擦磨损过程中铜基体的粘着磨损，磨损机理主要为磨粒磨损和电弧侵蚀磨损。
채용분말야금법제비 SiC/C-Cu 복합재료，연구 SiC 과립함량대해재료조직결구여물이성능적영향，병재HST-100재류마찰마손시험궤상진행재류마손시험，연구마찰속도、전류밀도여SiC과립함량대SiC/C-Cu복합재료마손솔적영향이급마손궤리적변화。결과표명：SiC과립균균분포우동기체중。수SiC함량증가，복합재료적경도화공극솔도축점증대，밀도화도전솔강저。첨가SiC과립가증강C-Cu복합재료적항마손성능，재료적마손솔수마찰속도화전류밀도증가이증가，수SiC함량증가정선강저후상승적추세，함2%SiC(질량분수)적SiC/C-Cu 복합재료구유우이적항재류마손성능。첨가 SiC 과립가감소마찰마손과정중동기체적점착마손，마손궤리주요위마립마손화전호침식마손。
SiC/C-Cu composites with different SiC contents were fabricated by powder metallurgic method. The effect of SiC content on microstructure and physical properties of the composite materials were investigated. The tests were carried out using HST-100 tribo-tester to study the effects of velocity, current density and SiC content on wear rate and wear mechanism. The experimental results indicate that, SiC particles distributes uniformly in the Cu matrix, with increasing SiC content the hardness and porosity of the composites increase, while density and conductivity decrease. The anti-wear performance of the composites can be improved by adding SiC particles. And the wear rate of the composites increases with increasing velocity and current density, as well as increases first and then decreases with increasing SiC content. The composite with SiC content of 2%exhibits superior electrical wear property. The adhesive wear of the Cu matrix can be reduced by adding SiC particles. Frictional particle wear and arc erosion are the dominant mechanism.