Grindability of cast Ti-Hf alloys

Masafumi Kikuchi, Masatoshi Takahashi, Hideki Sato, Osamu Okuno, Martha E. Nunn, Toru Okabe

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

As part of our systematic studies characterizing the properties of titanium alloys, we investigated the grindability of a series of cast Ti-Hf alloys. Alloy buttons with hafnium concentrations up to 40 mass% were made using an argon-arc melting furnace. Each button was cast into a magnesia-based mold using a dental titanium casting machine; three specimens were made for each metal. Prior to testing, the hardened surface layer was removed. The specimens were ground at five different speeds for 1 min at 0.98 N using a carborundum wheel on an electric dental handpiece. Grindability was evaluated as the volume of metal removed per minute (grinding rate) and the volume ratio of metal removed compared to the wheel material lost (grinding ratio). The data were analyzed using ANOVA. A trend of increasing grindability was found with increasing amounts of hafnium, although there was no statistical difference in the grindability with increasing hafnium contents. We also found that hafnium may be used to harden or strengthen titanium without deteriorating the grindability.

Original languageEnglish (US)
Pages (from-to)34-38
Number of pages5
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Volume77
Issue number1
DOIs
StatePublished - Apr 1 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Biomedical Engineering

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