CAJ | 학술논문

对喷射沉积技术制备的不同硅含量铝基功能梯度复合材料进行室温摩擦学性能研究.结果表明:当硅含量分别为7%、17%和20%时,SiCp/Al-Si功能梯度复合材料的摩擦因数随载荷或滑动速度(转速)的增加而减小;随着SiC颗粒含量的增加,摩擦因数呈增大趋势;随基体硅含量增加,摩擦因数越稳定.在转速300~500 r/min、700~900 r/min和载荷10~30 N、40~50 N时,磨损率随转速、载荷的增加而升高,随SiC颗粒含量的增加而降低,梯度变化明显;在转速500~700 r/min和载荷30~40 N时,随转速、载荷的增加,磨损率反而减小;随基体硅含量的增加,磨损率呈降低趋势,材料在摩擦过程中生成的机械混合层(MML)厚度呈减小趋势.
대분사침적기술제비적불동규함량려기공능제도복합재료진행실온마찰학성능연구.결과표명:당규함량분별위7%、17%화20%시,SiCp/Al-Si공능제도복합재료적마찰인수수재하혹활동속도(전속)적증가이감소;수착SiC과립함량적증가,마찰인수정증대추세;수기체규함량증가,마찰인수월은정.재전속300~500 r/min、700~900 r/min화재하10~30 N、40~50 N시,마손솔수전속、재하적증가이승고,수SiC과립함량적증가이강저,제도변화명현;재전속500~700 r/min화재하30~40 N시,수전속、재하적증가,마손솔반이감소;수기체규함량적증가,마손솔정강저추세,재료재마찰과정중생성적궤계혼합층(MML)후도정감소추세.
@@@@The wear properties of spray SiCp/Al-Si functionally gradient composites with different silicon contents were investigated. The results show that, when Si contents are 7%, 17% and 20%, respectively, the friction coefficient of SiCp/Al-Si gradient composite decreases with load or speed increasing, as SiC particle contents enhancing, the friction coefficient reflects increasing trend. With Si contents adding, the friction coefficient is more stability. When Speeds are 300?500 r/min and 700?900 r/min or loads are 10?30 N and 40?50 N, the wear rate increases with speeds and loads upgrading, and decreases with SiC particle content enhancing?when the speeds are 500?700 r/min or loads are 30?40 N, the wear rate decreases with speed and load increasing?with Si contents increases, the wear rate reflects decrease trends?at the same time, with Si content increasing, thicknesses of mechanical mixing layer (MML) generated in the processes of friction and wear is reducing trends.