CAJ | 학술논문

采用粉末冶金方法制备铜基摩擦材料，研究SiC含量对材料摩擦磨损性能的影响，探讨材料摩擦表面和亚表面的演变规律，揭示材料的摩擦磨损机理。结果表明：不含SiC材料的摩擦表面出现大量凹坑，磨损严重，磨损机理以黏着磨损为主；当SiC含量低于6%(质量分数)时，材料表面出现较多凹坑及浅犁沟，继续提高SiC含量，凹坑数量减少直至消失，材料表面犁沟的深度及宽度增加，表面及亚表面出现裂纹，材料主要磨损机理由黏着磨损和轻微犁削磨损向剥层磨损和严重犁削磨损转变。
채용분말야금방법제비동기마찰재료，연구SiC함량대재료마찰마손성능적영향，탐토재료마찰표면화아표면적연변규률，게시재료적마찰마손궤리。결과표명：불함SiC재료적마찰표면출현대량요갱，마손엄중，마손궤리이점착마손위주；당SiC함량저우6%(질량분수)시，재료표면출현교다요갱급천리구，계속제고SiC함량，요갱수량감소직지소실，재료표면리구적심도급관도증가，표면급아표면출현렬문，재료주요마손궤이유점착마손화경미리삭마손향박층마손화엄중리삭마손전변。
The effects of SiC content on friction and wear properties, the microstructure evolution of friction surface and sub-surface were investigated. The wear mechanism of copper matrix composite prepared by powder metallurgy method was revealed. The experimental results show that the friction surface displays a rough morphology with a number of wide hollows when the material does not contain SiC, which means that severe adhesion is the dominant wear mechanism. When SiC content is less than 6%(mass fraction), many narrow furrows along with some shallow hollows appear on the friction surface of the material. When SiC content is more than 6%, the hollows decrease and even disappear with the increase of SiC content. The furrows become wider and deeper, and the cracks form on the surface and the sub-surface. The wear mechanism changes from adhesion wear and mild ploughing wear to delamination and severe ploughing wear.