摘要
利用选择性激光烧结技术制备了空间有序的石墨骨架,并对石墨骨架进行二次固化、浸渍强化、镀铜等处理,进而将镀铜石墨骨架和铝合金进行铸造复合,制备了空间有序石墨/铝基自润滑复合材料,并对复合材料及铝合金基体的摩擦系数进行研究。结果表明:载荷为100~200 N时,随着载荷的增加,石墨/铝基自润滑复合材料稳定摩擦阶段的摩擦系数增大,当载荷为100 N,石墨含量10%时,复合材料的稳定摩擦阶段的摩擦系数低至0.30左右,铝合金基体的稳定摩擦阶段的摩擦系数为0.65左右。
The spatially ordered graphite skeleton was prepared by selective laser sintering technology,then treated with secondary consolidation,infiltration strengthening and copper plating. The spatial ordered graphite/Al matrix self-lubricating composite was prepared by casting. The friction coefficient of the spatially ordered graphite/Al matrix self-lubricating composite and Al alloy was studied. The results show that when the load is in the range of 100-200 N,the friction coefficient of the graphite/Al matrix selflubrication composite in the stable friction stage increases with the increasing of the load; the stable friction coefficient of the graphite/Al matrix self-lubrication composite with graphite content of 10% is about 0. 30 when the load is 100 N,which is lower than that of the aluminum alloy matrix of 0. 65.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2017年第12期1-5,共5页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51604161
51604162)
湖北省自然科学基金(2016CFB236)
水电机械设备设计与维护湖北省重点实验室开放基金(2016KJX11)
关键词
空间有序
石墨
铝合金
自润滑
复合材料
摩擦系数
spatially ordered
graphite
aluminum alloy
self-lubricating
composite
friction coefficient
