Ceramic Bonding Strength of Au-1.6wt% Ti Alloy

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  • ITO Masayuki
    Division of Fixed Prosthodontics, Graduate School of Dentistry, Tohoku University
  • KIKUCHI Masafumi
    Division of Dental Biomaterials, Graduate School of Dentistry, Tohoku University
  • OKUNO Osamu
    Division of Dental Biomaterials, Graduate School of Dentistry, Tohoku University
  • KIMURA Kohei
    Division of Fixed Prosthodontics, Graduate School of Dentistry, Tohoku University

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  • On transcendency of special values of arithmetic automorphic functions

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Abstract

The aim of this investigation was to evaluate the metal-ceramic bonding of Au-1.6wt%Ti alloy. Therefore, the coefficient of thermal expansion, modulus of elasticity, ceramic bonding strength, and hardness of Au-1.6wt%Ti alloy were measured. The metal-ceramic interface was observed by EPMA to investigate its bonding mechanism. The Au-1.6wt%Ti alloy showed a coefficient of thermal expansion close to that of conventional precious metal alloys for metal-ceramics. Bonding strength was 25MPa or higher for all specimens—whether ceramic-fired directly after casting, or following oxidation treatment or age hardening. Specimens subjected to oxidation treatment showed slightly lower post-firing hardness than those age-hardened. EPMA observation showed an accumulation of Ti and O contents on the alloy side at the metal-ceramic interface.

Journal

  • Dental Materials Journal

    Dental Materials Journal 24 (2), 268-274, 2005

    The Japanese Society for Dental Materials and Devices

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