Singha Roy, Rajdeep and Basu , Debabrata and Chanda , A and Mitra, M K (2007) Distinct wear characteristics of submicrometer-grained alumina in air and distilled water: A brief analysis on experimental observation. Journal of the American Ceramic Society, 90 (9). pp. 2987-2991. ISSN 0002-7820

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Sliding wear behavior of submicrometer-grained (grain size=0.45 mu m) alumina was investigated in air and distilled water and the result was compared with the wear characteristics of similar material with coarser grain sizes. Experiments were conducted with a pin-on-disk wear-testing machine under identical test conditions. Alumina with submicrometer grain size exhibits substantially higher wear resistance compared with the coarser-grained materials in both the environments. Scanning electron micrograph of the wornout samples revealed that in air, formation and subsequent degeneration of the compacted layer of wear-debris on the sliding surface govern the wear loss. In distilled water, no compacted layer was observed and in such cases, grain pullout through coalescence of microcracks along grain boundaries was found to be the dominant mechanism of wear.

Item Type: Article
Subjects: Microstructure and Characterization
Depositing User: Namita Dutta
Date Deposited: 01 Feb 2012 12:43
Last Modified: 19 Sep 2012 06:26

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