title: Surface contamination of titanium by abrading treatment.
abstract: This study investigated the contamination of abraded Ti surfaces. Using a polishing machine, specimens were abraded with waterproof SiC grit papers under water cooling. The abraded surfaces were examined using element analysis, X-ray diffraction, and hardness tests. Contaminant deposits with dimensions reaching about 30 microns were observed throughout the surface. In these deposits, Ti was apparently reduced by about 10% and replaced by Si and O. The chemical bond state of the Si was similar to that of SiC or a titanium silicide. The O was solute in Ti, which increased the surface hardness. The contaminant deposits were amorphous or very thin. The contamination of Ti, the extent of which was related to hardness, resulted from a reaction with abrasives.
authors.affiliation: Department of Dental Materials and Technology, Niigata University School of Dentistry.
authors.forename: O
authors.initials: O
authors.lastname: Miyakawa
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: S
authors.initials: S
authors.lastname: Okawa
authors.forename: M
authors.initials: M
authors.lastname: Kanatani
authors.forename: S
authors.initials: S
authors.lastname: Nakano
authors.forename: M
authors.initials: M
authors.lastname: Kobayashi
mesh_terms: D003775:Dental Polishing; D004577:Electron Probe Microanalysis; D004866:Equipment Contamination; D006047:Gold Alloys / Q000737:chemistry; D006244:Hardness; D008422:Materials Testing; D008669:Metallurgy / Q000379:methods; D010087:Oxides / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D012825:Silicon / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D006047:Gold Alloys; D010087:Oxides; D014025:Titanium; D010100:Oxygen; D012825:Silicon