[Corrosion of dental titanium alloys binary system of Ti-Al, Ti-Cu, Ti-Ni].
Anodic polarization, natural electrode potential, polarization resistance, tarnish, weight change and metal component dissolution in artificial saliva, of Ti-Al, Ti-Cu and Ti-Ni binary alloys were investigated to determine the effects of the added elements on the corrosion characteristics. In the case of Ti-5 at % Al to Ti-50 at % Al system alloys, increase in the aluminum content of the alloys raised the corrosion resistance. However pitting corrosion presumed at an aluminum content of more than 10 at %. In the case of the Ti-5 at % Cu to Ti-70 at % Cu system alloys, increase in the copper content of the alloys decreased the corrosion resistance and the decrease was marked at a copper content of more than 50 at %. In the case of Ti-5 at % Ni to Ti-70 at % Ni system alloys, 50 at % Ni was estimated to be the maximum content to keep corrosion resistance of the titanium alloys.
Oda
Y
Y
Department of Dental Materials Science, Tokyo Dental College.
Funasaka
M
M
Sumii
T
T
D000535:Aluminum; D003300:Copper; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D014025:Titanium / Q000737:chemistry*
D003722:Dental Alloys; C040654:titanium nickelide; D003300:Copper; D009532:Nickel; D000535:Aluminum; D014025:Titanium