镁-铝类水滑石的摩擦性能  

Friction Performances of Magnesium-Aluminium Layered Double Hydroxide

作　　者：王晓波 白志民[2] 贺智勇 张启富 

机构地区：[1]中国钢研科技集团有限公司新冶集团,北京100081 [2]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《硅酸盐学报》2014年第5期688-692,共5页Journal of The Chinese Ceramic Society

摘　　要：以菱镁矿为原料,通过化学分解--水热法合成镁铝类水滑石,利用月桂酸钠对合成样品进行表面改性,以提高类水滑石粉体在润滑介质中的分散性。月桂酸钠的最佳添加量占浆液质量5%。分别采用微振动(SRV)摩擦实验和四球摩擦实验表征改性类水滑石粉体的摩擦性能。结果表明:类水滑石粉体作为减摩材料,其合理的添加量为30g/L基础油。类水滑石粉体可显著降低摩擦副间的摩擦系数,是一种具有潜在应用价值的减摩材料。Mg-Al layered double hydroxide（LDH）,prepared by magnesite under chemical precipitation and hydrothermal,was modified by sodium laurate to improve the dispersibility in the lubrication medium.The optimum dosage of sodium laurate was 5％ in mass of seriflux.SRV friction experiment and four-ball friction test were used to characterize the friction performances of the modified LDH.The results show that the reasonable addition amount of LDH,served as antifriction material,was 30 g/L base oil.LDH could significantly reduce the friction coefficient between friction pair,which was an anti friction material of potential application.

关 键 词：菱镁矿 类水滑石 摩擦性能 减摩材料 摩擦系数 

分 类 号：U465[一般工业技术—材料科学与工程]