Ti 및 Mo 첨가에 따른 치과 CAD/CAM용 Ni-Cr 및 Co-Cr합금의 표면분석
Surface Analysis of Ni-Cr and Co-Cr Alloys with Addition of Ti and Mo for Dental CAD/CAM Use
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In this study, surface analysis of Ni-Cr and Co-Cr alloys with addition of Ti and Mo for dental CAD/CAM use has been researched experimentally. The surface characteristics of the alloys were examined by Vickers hardness test, bonding strength test, surface roughness test, field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction spectroscopy. The shrinkage of the sintered Ni-Cr alloy alloy was slightly larger than that of Ni-Cr-Ti alloy, and larger than Co-Cr alloy. Also, the addition of Mo showed a tendency to decrease shrinkage somewhat. From the result of XRD analysis, NiCr, Ni3Cr and Ni3Ti were observed in the sintered Ni-13Cr-xTi and Ni-13Cr-xMo alloys. In addition, σ-CrCo, Co2Mo3 and TiCo2 were formed in the sintered Co-Cr-xTi and Co-Cr-xMo alloys. Surface hardness of Ti and Mo added alloy was higher than those of Ni-Cr and Co-Cr alloy. The bond strength between sintered alloy and porcelain was 16.1 kgf / mm2 for Ni-13Cr alloy, 17.8 kgf / mm2 for Ni-13Cr-5Ti alloy, and 8.2kgf / mm2 for Ni-13Cr-10Ti alloy, respectively.
Abstract
In this study, surface analysis of Ni-Cr and Co-Cr alloys with addition of Ti and Mo for dental CAD/CAM use has been researched experimentally. The surface characteristics of the alloys were examined by Vickers hardness test, bonding strength test, surface roughness test, field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction spectroscopy. The shrinkage of the sintered Ni-Cr alloy alloy was slightly larger than that of Ni-Cr-Ti alloy, and larger than Co-Cr alloy. Also, the addition of Mo showed a tendency to decrease shrinkage somewhat. From the result of XRD analysis, NiCr, Ni3Cr and Ni3Ti were observed in the sintered Ni-13Cr-xTi and Ni-13Cr-xMo alloys. In addition, σ-CrCo, Co2Mo3 and TiCo2 were formed in the sintered Co-Cr-xTi and Co-Cr-xMo alloys. Surface hardness of Ti and Mo added alloy was higher than those of Ni-Cr and Co-Cr alloy. The bond strength between sintered alloy and porcelain was 16.1 kgf / mm2 for Ni-13Cr alloy, 17.8 kgf / mm2 for Ni-13Cr-5Ti alloy, and 8.2kgf / mm2 for Ni-13Cr-10Ti alloy, respectively.
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