Evaluation of couple/crevice corrosion by prosthetic alloys under in vivo conditions.
Alloys of cast Co-Cr-Mo, wrought Co-Cr-W, wrought, Co-Ni-Cr-Mo(MP35N), Ti-60% Al-4% V, and graphite were incorporated in specimens which simulated both a couple and a crevice corrosion condition. These specimens were implanted in a dog for 30 months. Post-sacrifice examination showed no substantial evidence of corrosion activity on the surfaces of the metals except for a tarnish film on the titanium alloy specimens. The presence of the tarnish film is taken as more evidence of corrosion activity and this correlated with a thicker average fibrous membrane, cellular activity in and near the fibrous membrane, and some increased vascularity. These must be regarded as preliminary observations.
D000497:Alloys; D000535:Aluminum; D000818:Animals; D002857:Chromium; D003035:Cobalt; D003343:Corrosion; D004285:Dogs; D005069:Evaluation Studies as Topic; D006108:Graphite; D008722:Methods; D008982:Molybdenum; D009532:Nickel; D019736:Prostheses and Implants; D014025:Titanium; D014414:Tungsten
D000497:Alloys; D002857:Chromium; D003035:Cobalt; D006108:Graphite; D009532:Nickel; D008982:Molybdenum; D000535:Aluminum; D014025:Titanium; D014414:Tungsten