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To understand the roles of grain size and a small amount of glassy phase in the abrasive wear mechanisms of brittle ceramics, controlled single-pass scratch experiments were conducted with a Vickers diamond indenter on a range of pure, polycrystalline aluminas of varying grain size (1-25 μm) as well as on a commercial, 10 vol% glass containing alumina (AD90). These tests were made at a constant speed...
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