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Grindability of cast Ti–Hf alloys
Author(s) -
Kikuchi Masafumi,
Takahashi Masatoshi,
Sato Hideki,
Okuno Osamu,
Nunn Martha E.,
Okabe Toru
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30411
Subject(s) - materials science , hafnium , metallurgy , titanium , casting , mold , volume (thermodynamics) , grinding , alloy , titanium alloy , tin , zirconium , composite material , physics , quantum mechanics
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. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006