Study on the castability of Co-Cr alloy for cast plates. Part 3: Effects of alloy fusion temperature and the heating temperature of the cast ring.
Co-Cr alloy is used more frequently than Ni-Cr alloy as a non-precious alloy for cast plates in Japan. However, since the melting temperature of Co-Cr alloy is very high, about 1300 degrees C, and since it oxidizes easily, a vacuum-pressure casting machine capable of melting this alloy in a reduced atmosphere has recently been developed. Using this machine, the effects of fusion temperature and the heating temperature of the cast ring on the Co-Cr alloy were studied. It was found that in the vacuum-pressure casting method, both the fusion temperature of the Co-Cr alloy and the heating temperature of the cast ring had a significant effect (p < 0.01) on the castability of the Co-Cr alloy.
Satoh
Y
Y
Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
Ohyama
T
T
Nagai
E
E
Matsuzu
M
M
Toyoma
H
H
Ohwa
M
M
Kobayashi
E
E
Sakurai
H
H
Ohki
K
K
Nishiyama
M
M
D002858:Chromium Alloys / Q000737:chemistry*; D003734:Dental Casting Investment / Q000737:chemistry*; D003735:Dental Casting Technique / Q000295:instrumentation*; D003775:Dental Polishing; D006358:Hot Temperature; D008422:Materials Testing; D011312:Pressure; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry; D014618:Vacuum
D002858:Chromium Alloys; D003734:Dental Casting Investment; D014025:Titanium