Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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A Study on EPMA on Ni-Cr Alloy by Nb content for Porcelain Fused to Metal Crown

Nb이 첨가된 금속소부도재관용 Ni-Cr 합금 표면의 EPMA 관찰

  • Kim, Chi-Young (Dept. of Dental Laboratory Science, Catholic University of Busan) ;
  • Choi, Sung-Min (Dept. of Biomedical Engineering, Inje University) ;
  • Cho, Hyeon-Seol (Dept. of Hospital Medical Engineering, Kwangyang Health college)
  • 김치영 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 최성민 (인제대학교 의용공학과) ;
  • 조현설 (광양보건대학 병원의료공학과)
  • Published : 2006.07.10
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Abstract

The effect of Nb on interfacial bonding characteristics of Ni-Cr alloy for porcelain fused to metal crown (PFM) has been studied in order to investigate oxide layer. A specimens of Ni-Cr alloy, which is 0.8mm in thickness, within the porcelain furnace of 1,000$^{\circ}C$ with four tests such as air, vacuum, air for 5 minutes and vacuum for 5 minutes in order to examine an oxide behavior of alloy surface generated by the adding of Nb to be controlled at a rate of 0, 1, 3 and 5. Oxide film was observed form of the fired specimens with scanning electron microscope (SEM), and at the same time it measured Electron Probe Micro Analyzer (EPMA). The result of this study were as follows: 1. Cr oxide film and Nb oxide film were observed from the surface of specimen to be controlled at a rate of Nb 1%. 2. Nb oxide film was observed from the interface of specimens to be controlled at a rate of Nb 1% and 3%. 3. The stability of oxide films that treated in air were more stable than treated under vacuum.

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