Optical Surface Analysis of the Head-Disk-Interface of Thin Film Disks

Author:

Meeks Steven W.1,Weresin Walter E.1,Rosen Hal J.1

Affiliation:

1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099

Abstract

This paper describes the design, operation, theory, and data interpretation of an Optical Surface Analyzer (OSA). The OSA can measure carbon wear, lubricant depletion/accumulation, surface roughness, and lubricant alteration on carbon coated thin film disks. This device can measure an Angstrom of carbon wear or lubricant depletion/accumulation. The OSA can also measure debris generation and lubricant degradation through a measurement of optical index change. The lateral resolution of the OSA is approximately 5 by 10 microns and the bandwidth of the device is 2 MHz. The small device size allows it to be used within a test stand environment.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

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