Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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Comparative Study on the Quality of Sintered Zirconia Block Fabricated by Using Domestic Powder and Global-Brand Powder

국산 지르코니아 분말 소결체 품질의 글로벌 제품과의 비교 연구

  • Kim, Yong-In (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Lee, Seung-Mi (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Byeon, Jai-Won (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
  • 김용인 (서울과학기술대학교 신소재공학과) ;
  • 이승미 (서울과학기술대학교 신소재공학과) ;
  • 변재원 (서울과학기술대학교 신소재공학과)
  • Received : 2015.07.22
  • Accepted : 2015.08.31
  • Published : 2015.09.25
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Abstract

Sintering behavior of 3%yttria-stabilized zirconia was comparatively studied using a spray-dried powder produced by a domestic and global company. Quality of the sintered block was analysed in terms of relative density, shrinkage rate, grain growth, hardness, and fracture toughness. Relative density, shrinkage rate, and hardness value of the finally sintered block was similar between domestic and global zirconia powder, respectively. But, flexural strength of the domestic powder specimen was about 70% of the sintered block produced by using a global powder. The poor sintering quality of the domestic powder was discussed in relation with compressibility of the spray-dried granule-type powder and the amount of monoclinic phase in the as-received powder.

Keywords

References

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