2000 Volume 26 Issue 4 Pages 563-568
One of the main problems in a hard disc drive is crashing and stiction between the flying slider and the disk. These problems are caused by contamination and condensation of the lubrication oil on the surface of the slider. Stiction can be prevented by treating the flying slider with an oil repellent, that is, a 2- (heptadecafluorooctyl) ethyltrimethoxysilane (FAS) -octadecafluorooctane solution or a octadecafluorooctane solution of 2- (heptadecafluorooctyl) ethyltrimethoxysilane treated by hydrolysis and polymerization (FASI). The effectiveness of the oil repellent treatment was evaluated by measuring the contact angles of mineral oil on the surface of a slider for six cases. The contact angle on the untreated slider was 20°, that on a slider dipped in FAS solution and heated to 393K was 51°, that on a slider dipped in FASI solution and heated to 393K was 68°, that on a slider vapor-deposited with FAS solution at 433K was 80°, that on a slider dipped in FASI solution after ultraviolet radiation (UV) and heated to 393K was 80°, and that on a slider radiated by UV after being dipped in FASI solution was 81°.