열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제28권1호
  • /
  • Pages.17-23
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  • 2015
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  • 1225-1070(pISSN)
  • /
  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
권호 표지
DOI QR코드

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상온 분사법에 의한 수산화아파타이트 코팅 지르코니아의 제조 및 미세구조에 미치는 열처리 효과

Fabrication of Hydroxyapatite-coated Zirconia by Room Temperature Spray Process and Microstructural Change by Heat-treatment

  • 이종국 (조선대학교 첨단소재공학과) ;
  • 음상철 (조선대학교 첨단소재공학과) ;
  • 김재홍 (조선대학교 첨단소재공학과) ;
  • 장우양 (조선대학교 첨단소재공학과)
  • 투고 : 2014.12.26
  • 심사 : 2015.01.06
  • 발행 : 2015.01.30
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초록

Hydroxyapatite coatings were fabricated by a room temperature spray method on zirconia substrates and the influence of heat-treatment on their microstructure was also investigated. Phase composition of coated hydroxyapatite films was similar to the starting powder, but the grain size of hydroxyapatite particles was reduced to the size of nano-scale about 100 nm. Grain size, particle compactness, and adhesiveness to zirconia of hydroxyapatite coatings were increased with heat-treatment temperature, but some of cracks by heat-treatment above $1100^{\circ}C$ were initiated between hydroxyapatite coatings and zirconia substrate. Heat-treated hydroxyapatite layers show the dissolution in SBF solution for 5 days. Hydroxyapatite-coated specimen heat-treated at $1100^{\circ}C$ for 1 h has a good biocompatibility, which specimen induced the nanocrystalline hydroxyapatite precipitates on the coating surface by the immersion in SBF solution for 5 days.

키워드

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