Mechanical Properties and Microstructures of Dental Cast Ti-Ag and Ti-Cu Alloys.

DOI NDLデジタルコレクション Web Site PubMed 被引用文献38件 参考文献36件
  • TAKAHASHI Masatoshi
    Division of Dental Biomaterials, Department of Oral Rehabilitation and Materials Science, Graduate School of Dentistry, Tohoku University
  • KIKUCHI Masafumi
    Division of Dental Biomaterials, Department of Oral Rehabilitation and Materials Science, Graduate School of Dentistry, Tohoku University
  • TAKADA Yukyo
    Division of Dental Biomaterials, Department of Oral Rehabilitation and Materials Science, Graduate School of Dentistry, Tohoku University
  • OKUNO Osamu
    Division of Dental Biomaterials, Department of Oral Rehabilitation and Materials Science, Graduate School of Dentistry, Tohoku University

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In this study, experimental Ti-Ag alloys (5, 10, and 20mass% Ag) and Ti-Cu alloys (2, 5, and 10mass% Cu) were made in an argon-arc melting furnace. The alloys were cast into magnesia molds using an argon gas-pressure dental casting machine, and the mechanical properties and microstructures of the castings were investigated. As the concentration of silver or copper in the alloys increased, the tensile strength, yield strength, and hardness of the alloys became higher than those of CP Ti, and the elongation of the alloys became lower than that of CP Ti. Changes in the mechanical properties by alloying were considered to be caused by solidsolution strengthening of the α-phases and by precipitation of intermetallic compounds.

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