Investigation on the tribological characteristics of lubricated Al2O3-TiC (AlTiC) surface

S Jitphayomkun, P Dechadilok, D Tungasmita, S Tungasmita

Abstract


Lapping process is one of the most important processes in modern hard disk drive manufacturing. Using lubricant in the lapping process does not only reduce the friction but also transfers heat and captures debris away from the surface contacts. The effects of tribological parameters on the lubricant characteristics and friction regime were investigated, using tribometer. The tribological behaviors of the lubricated alumine-titanium carbide (AlTiC) surface with different types of lubricants were also investigated. The coefficient of friction values of stainless steel ball sliding on the lubricated surface exhibited much lower than dry surface. The variation of normal force and sliding speed did not affect lubricant regime on dry surface. For the lubricated AlTiC surface with both ethylene glycol-based and oil-based lubricants, the friction regime changed as a function of both normal force and sliding speed. Scanning electron microscopy confirmed deeper and wider wear tracks on dry lubricant than those with lubricants.

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Printed ISSN: 0857-6149

Online ISSN: 2630-0508