Takahashi J, Kimura H, Lautenschlager E P, Chern Lin J H, Moser J B, Greener E H
Department of Dental Technology, Osaka University Faculty of Dentistry, Japan.
J Dent Res. 1990 Dec;69(12):1800-5. doi: 10.1177/00220345900690120301.
Pure titanium was cast into five different phosphate-bonded SiO2 investment mold materials (at 350 degrees C) with an argon-arc melting and pressure casting machine. The mesh castability, the fit of the MOD inlay castings, and the Knoop hardness and the micro-structure in cross-sections of castings were examined. The setting and thermal expansion, the compressive strength, and the X-ray diffraction analysis of the investments were also measured. The castability, the fit, and the thickness of the reacted layer differed in degree among these investments, in spite of the same phosphate-bonded SiO2-type investment. A significant correlation was obtained between the thermal expansion (at 350 degrees C) and the casting accuracy.
使用氩弧熔炼和压力铸造机将纯钛铸入五种不同的磷酸盐粘结SiO₂ 包埋模具材料中（在350℃下）。检查了网状铸造性能、MOD嵌体铸件的贴合度、努氏硬度以及铸件横截面的微观结构。还测量了包埋材料的凝固和热膨胀、抗压强度以及X射线衍射分析。尽管这些包埋材料都是相同的磷酸盐粘结SiO₂ 型包埋材料，但它们在铸造性能、贴合度和反应层厚度方面存在程度差异。在热膨胀（350℃时）和铸造精度之间获得了显著相关性。
