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Oxidation and Ceramic Coatings on 80Ni20Cr Alloys

Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720

A.P. Tomsia

Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720

Additives and/or impurities in NiCr alloys would be expected to affect the oxidation and adherence of dental glasses. Oxidation characteristics and bonding of several glasses to a commercial impure 80Ni20Cr alloy and laboratory-prepared purer alloys were thus studied at 1000°C. The commercial alloy formed a porous and buckled single-layer oxide scale with lenticular voids at the interface. The scale was penetrated by glass which formed a chemical bond at the alloylglass interface, resulting in excellent adherence with fracture in the glassy phase. The purer alloy formed a complex multilayer oxide scale to which the glass bonded but did not penetrate; the assembly was not satisfactory, since fracture occurred in the oxide scale.

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Journal of Dental Research, Vol. 67, No. 9, 1164-1171 (1988)
DOI: 10.1177/00220345880670090501


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Pask, J.A. Articles by Tomsia, A.P. Search for Related Content PubMed PubMed Citation Articles by Pask, J.A. Articles by Tomsia, A.P. Pubmed/NCBI databases Substance via MeSH Social Bookmarking                         What's this?