摘要
为了改善锡青铜在水润滑条件下的摩擦性能,在其表面以1%氟硅烷乙醇溶液制备了超疏水薄膜。通过扫描电镜(SEM)观察了超疏水薄膜的表面形貌,测量了其接触角;在CETRUMT-2球-盘摩擦磨损试验机上考察了超疏水薄膜水润滑下的减摩性能。结果表明:锡青铜表面刻蚀并成膜后形成了粗糙的微纳复合结构,刻蚀40 min表面接触角可达151.1°,具备超疏水性能;超疏水薄膜在水润滑下具有较低的摩擦系数,可有效降低摩擦副的磨损。
Superhydrophobic coating was prepared on the surface of bronze in order to improve its friction and wear behavior.The morphology of as-prepared superhydrophobic coating was observed with a scanning electron microscope,and its water contact angle was determined with a contact angle meter.Moreover,the friction-reducing performance of the coating under water-lubricated condition was evaluated with a ball-on-disc friction and wear tester.Results indicated that etching led to the formation of a micro/nano composite structure on the bronze surface;and the surface after 40 min of etching exhibited a water contact angle of 151.1°,showing superhydrophobicity.Besides,the superhydrophobic coating exhibited a lowered friction coefficient and could effectively reduce the wear of the frictional pair under water-lubricated condition.
出处
《材料保护》
CAS
CSCD
北大核心
2015年第1期54-56,9,共3页
Materials Protection
关键词
超疏水薄膜
锡青铜
水润滑
摩擦系数
superhydrophobic coaling
bronze
water lubrication
friction coefficient
