Mechanical properties and high speed machining characteristics of Al2O3-based ceramics for dental implants
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
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.
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.
참고문헌 (23)
- L. L. Hench, , J. Am. Ceram. Soc, 81, pp.1705~1728 (1998)
- A.N. Rascon, , Int. J. Refract. Met. Hard Mater, 27, pp.962~970 (2009)
- R.B. Heimann, "Classic and advanced ceramics: from fundamentals to applications", pp.25~ (2010), WILEY-VCH
- G. Willmann, , Clin. Orthop. Relat. R, 379, pp.173~177 (2000)
- G. Willmann, "Bioceramics in orthopedics: New applications", pp.19~ (1998), Ferdinand Enke Verlag
- A.N. Rascon, , Int. J. Refract. Met. H, 29, pp.333~340 (2011)
- J. Wang, , J. Mater. Sci, 24, pp.3421~3440 (1989)
- F. Cesari, , Ceram. Int, 32, pp.249~255 (2006)
- C. Santos, , Ceram. Int, 35, pp.709~718 (2009)
- S. Choi, , Ceram. Int, 31, pp.39~46 (2005)
- R.G. Luthardt, , Dent. Mater, 20, pp.655~662 (2004)
- H. Huang, , Mater. Sci. Eng. A, 345, pp.155~163 (2003)
- "DIN:51109, Prufung von keramischen Hochleistungswerkstoffen, Ermittlung der Risszahigkeit KIc" (1991), Beuth-Verlag
- "ISO: 6872, Biaxial flexure test (piston-on-three-ball test)and single edge V-notched beam method. 8", ~ (2008)
- M. Asmani, , J. Eur. Ceram. Soc, 21, pp.1081~1086 (2001)
- J.W. Adams, , J. Am. Ceram. Soc, 80, pp.903~908 (1997)
- W.D. Callister, "Materials Science and Engineering: An Introduction", pp.257~ (2007), John Wiley & Sons
- A.H. De Aza, , Biomaterials, 23, pp.937~945 (2002)
- A.G. Evans, , J. Am. Ceram. Soc, 73, pp.187~206 (1990)
- Dongxu Tang, "Effect of the Al2O3 Content on the Mechanical Properties and Microstructure of 3Y-TZP Ceramics for Dental Applications", Metals and Materials International, 18(3), pp.545~551 (2012), 대한금속·재료학회[DOI]
- K.K. Chawla, "Ceramic Matrix Composites", pp.274~ (1993), Chapman&Hall
- Y. Cao, , Eng. Fail. Anal, 8, pp.325~338 (2001)
- J.P. Davim, , J. Mater. Process. Technol, 103, pp.417~423 (2000)