Ohno H, Kanzawa Y
J Dent Res. 1985 Jan;64(1):67-73. doi: 10.1177/00220345850640011401.
The oxidized surfaces of cross-sections of gold alloys containing a total of 1.5 mass % Fe and Sn, oxidized at 1000 degrees C for one hr, have been studied by various techniques, including secondary electron micro-analysis, X-ray micro-analysis, X-ray diffraction, and thermogravimetry. Over the composition range (0.30-1.50 mass % Fe), an external oxidation zone containing only Fe oxides was formed. The quantity of Fe2O3 was greater than that of SnO2 for 0.45-1.50 mass % Fe. With an Fe content below 0.45 mass %, the amount of SnO2 was greater than that of Fe2O3. Traces of Fe3O4 were formed in high Sn content alloys. Internal oxidation particles composed of Fe2O3 and SnO2 precipitated deep in the alloy matrix (0.90-1.50 mass % Fe), and these changed to an internal oxidation band composed mainly of SnO2 for 0.3 mass % Fe.
通过包括二次电子微分析、X射线微分析、X射线衍射和热重分析在内的各种技术，对总共含有1.5质量%铁和锡的金合金在1000℃下氧化1小时后的横截面氧化表面进行了研究。在成分范围（0.30 - 1.50质量%铁）内，形成了仅含氧化铁的外部氧化区。对于0.45 - 1.50质量%的铁，Fe₂O₃的量大于SnO₂的量。当铁含量低于0.45质量%时，SnO₂的量大于Fe₂O₃的量。在高锡含量合金中形成了痕量的Fe₃O₄。由Fe₂O₃和SnO₂组成的内氧化颗粒在合金基体深处沉淀（0.90 - 1.50质量%铁），而对于0.3质量%的铁，这些颗粒转变为主要由SnO₂组成的内氧化带。
