Tensile Properties and Surface Reaction Layer of Biomaterial, Ti-29Nb-13Ta-4.6Zr, Cast by Dental Precision Casting Process Using Various Investment Materials

Mitsuo Niinomi, Toshikazu Akahori, Tetsunori Manabe, Tsutomu Takeuchi, Shigeki Katsura, Hisao Fukui, Akihiro Suzuki

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Ti-29Nb-13Ta-4.6Zr for biomedical applications and conventional α+β type titanium Ti-6Al-4V ELI for biomedical and dental applications are subjected to dental precision casting using commercial alumina based and magnesia based investment materials, and modified magnesia based investment material. Mechanical properties and surface reaction layers of cast Ti-29Nb-13Ta-4.6Zr were investigated in order to find the suitable investment material for dental precision casting of Ti-29Nb-13Ta-4.6Zr in comparison with Ti-6Al-4V ELI. The following results were obtained. Elongation of Ti-29Nb-13Ta-4.6Zr cast into commercial alumina based investment material is lower than those cast into commercial magnesia and modified magnesia based investment materials although no big difference in strength is obtained regardless of the investment materials. The formation of surface reaction layer composed of oxide and α-case is restrained by magnesia and modified magnesia based investment materials as compared with alumina based one. The modified magnesia based investment material is better for casting of Ti-29Nb-13Ta-4.6Zr as compared with magnesia and alumina based investment materials.

Original languageEnglish
Pages (from-to)154-161
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume90
Issue number3
DOIs
Publication statusPublished - 2004 Mar

Keywords

  • Dental precision casting
  • Investment material
  • Mechanical properties
  • Surface reaction layer
  • β type titanium alloy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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