Magnetorheological (MR) Polishing of Alumina-Reinforced Zirconia Ceramics Using Diamond Abrasives for Dental Application

Autor:	Seung-Bok Choi, Won-Seung Cho, Myeong-Woo Cho, Bong-Cheol Shin, Jae-Jin Jae, Kwang-Pyo Hong, Yong-Kyu Cho
Rok vydání:	2012
Předmět:	Materials science Scanning electron microscope Mechanical Engineering Metallurgy Polishing Diamond engineering.material Microstructure Industrial and Manufacturing Engineering Mechanics of Materials visual_art Surface roughness visual_art.visual_art_medium engineering General Materials Science Cubic zirconia Ceramic Surface integrity
Zdroj:	Materials and Manufacturing Processes. 27:1135-1138
ISSN:	1532-2475 1042-6914
DOI:	10.1080/10426914.2011.654155
Popis:	In this study, ultraprecise polishing of alumina reinforced zirconia ceramics using magneto rheological (MR) fluids and diamond abrasives was investigated. First, alumina-reinforced zirconia composites, containing 0 to 30 vol% alumina, were fabricated by cold isostatic pressing at 150 MPa. The green compacts were then sintered at 1,550°C for 2 h in air. Mechanical properties and microstructures of the composites were observed. Second, a series of MR polishing experiments were performed for composites containing 20 vol% of alumina under various polishing conditions. MR polished surfaces were observed using a scanning electron microscope (SEM) and surface profiler to investigate the variation of the surface integrity. A very fine surface roughness of Ra = 1.960 nm was obtained after 60 minutes of MR polishing using diamond abrasives.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba1bd31e4a6ba2a608173d247561d7bd https://doi.org/10.1080/10426914.2011.654155 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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