Corrosion wear fracture of new β type biomedical titanium alloys

Mitsuo Niinomi, Daisuke Kuroda, Kei Ichi Fukunaga, Masahiko Morinaga, Yoshihisa Kato, Toshiaki Yashiro, Akihiro Suzuki

Research output: Contribution to journalConference articlepeer-review

178 Citations (Scopus)


Metallic materials such as stainless steel, Co-Cr alloy, pure titanium and titanium alloys have been used for surgical implant materials. The α+β type titanium alloy such as Ti-6A1-4V ELI has been most widely used as an implant material for artificial hip joint and dental implant because of its high strength and excellent corrosion resistance. Toxicity of alloying elements in conventional biomedical titanium alloys like Al and V, and the high modulus of elasticity of these alloy as compared to that of bond have been, however, pointed out. New β type titanium alloys composed of no-toxic elements like Nb, Ta, Zr, Mo and Sn with lower moduli of elasticity, greater strength and greater corrosion resistance were, therefore, designed in this study. The friction wear properties of titanium alloys are, however, low as compared to those of other conventional metallic implant materials such as stainless steels and Co-Cr alloy. Tensile tests and friction wear tests in Ringer's solution were conducted in order to investigate the mechanical properties of designed alloys. The friction wear characteristics of designed alloys and typical conventional biomedical titanium alloys were evaluated using a pin-on-disk type friction wear testing system and measuring the weight loss and width of groove of the specimen.

Original languageEnglish
Pages (from-to)193-199
Number of pages7
JournalMaterials Science and Engineering A
Issue number2
Publication statusPublished - 1999 May 15
EventProceedings of the 1998 Xi'an International Titanium Conference, XITC-98 - Xi'an, Shaanxi, China
Duration: 1998 Sept 151998 Sept 18


  • Biocompatibility
  • Biomedical titanium alloys
  • Corrosion friction wear
  • Mechanical properties
  • Modulus of elasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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