한국주조공학회지 (Journal of Korea Foundry Society)

  • 제27권3호
  • /
  • Pages.120-125
  • /
  • 2007
  • /
  • 1598-706X(pISSN)
  • /
  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

도재소부용 Ni-Cr-Mo계 치과용 합금의 미세조직 및 기계적성질

Microstructure and Mechanical Properties of Ni-Cr-Mo Based Dental Cast Iron for Porcelain-Fused-to-Metal Firing

  • Choi, D.C. (School of Materials Science and Engineering, Chonnam National University)
  • 발행 : 2007.05.20
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초록

The microstructure, mechanical properties and melting range of Ni-Cr-Mo based alloys were investigated to develop Be-free Ni-Cr-Mo base dental alloys for Porcelain-Fused-to-Metal Firing(PFM). All as-cast alloys showed dendritic structure. Rockwell hardness of 20Cr7Mo was increased with addition of Si and Ti. On the contrary, it was decreased with addition of Co. The duplex alloying elemental addition such as 3Co + xTi, 2Si + xCo and 2Si + xTi to 20Cr7Mo resulted in much increase of hardness. Rockwell hardness and compressive strength for 20Cr3CoSiTi or 17Cr6CoSiTi alloy that add Si-Ti had similar values compared to the commercial alloys. Melting range for 20Cr3CoSiTi and 17Cr6CoSiTi alloy that add Si-Ti showed similar or lower than commercial alloys. In conclusion, 20Cr3CoSiTi and 17Cr6CoSiTi alloys can be applied for commercial use.

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참고문헌

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