Mold filling and microhardness of 1% Fe titanium alloys.
We examined the mold filling capacity and microhardness of two industrial 1% Fe titanium alloys: Super-TIX800 (Nippon Steel Corp.) (Fe: 0.910%, O: 0.370%, N: 0.005%) and Super-TIX800N (Nippon Steel Corp.) (Fe: 0.960%, O: 0.300%, N: 0.041%). Two wedge-shaped acrylic patterns (with 30 degrees or 15 degrees angles) were prepared. Each alloy was cast in a centrifugal casting machine. Mold filling was evaluated as the missing length between the tip of the casting and the theoretical tip. Vickers hardness of the edge of the castings was also determined. For both angles tested, there were no significant differences (p>0.05) in mold filling among these alloys and the control (CP Ti). The results of testing the microhardness near the cast surfaces indicated that the hardened reaction layers on these alloys were thinner at the edge compared to CP Ti.
Division of Operative Dentistry, Graduate School of Dentistry, Tohoku University, Seiryo-machi, Aoba-ku, Sendai, Japan.
Hideki
H
Sato
Masashi
M
Komatsu
Barbara
B
Miller
Hiroshi
H
Shimizu
Hideki
H
Fujii
Toru
T
Okabe
D000704:Analysis of Variance; D003722:Dental Alloys; D003735:Dental Casting Technique; D003799:Dental Stress Analysis; D006244:Hardness; D007501:Iron; D008422:Materials Testing; D018709:Statistics, Nonparametric; D014025:Titanium
D003722:Dental Alloys; D014025:Titanium; D007501:Iron