Mechanical properties and high speed machining characteristics of Al2O3-based ceramics for dental implants

Title
Mechanical properties and high speed machining characteristics of Al2O3-based ceramics for dental implants
Authors
조명우
Keywords
Ceramics. Composites, Sintering, Machining, Microstructure, Strength.
Issue Date
2013
Publisher
JOURNAL OF CERAMIC PROCESSING RESEARCH
Series/Report no.
JOURNAL OF CERAMIC PROCESSING RESEARCH; vol.14 no.5 startpage 610 endpage 615
Abstract
This study examined the effect of the 3Y-TZP (3 mol% yttria stabilized tetragonal zirconia polycrystal) content on the mechanical properties and machinability of Al2O3 ceramics. The fracture toughness and biaxial strength increased with increasing 3Y-TZP content. The increasing amount of tetragonal ZrO2 and finer grain size of Al2O3 appear to be responsible for the high fracture toughness and biaxial strength, respectively. The thermal-induced residual stresses that probably account for the enhancement of fracture toughness were also calculated. The cutting force for a fully densified Al2O3 ceramic decreased with decreasing depth of cut or increasing cutting speed. Severe tool wear was observed during the cutting process due to the high hardness of the fully densified Al2O3 ceramic.
URI
http://dspace.inha.ac.kr/handle/10505/31609
ISSN
1229-9162
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Local Access Journal Papers, Reports(기계공학 논문, 보고서)

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