鉄の高温酸化に対する酸化鉛の影響
1992 年 41 巻 2 号 p. 96-100
詳細
1992 年 41 巻 2 号 p. 96-100
In the production processes of lead glass, the corrosion of furnace materials causes serious problems, because lead and lead oxides melt at relatively low temperature. Anomalous corrosion occurs when ferrous metals such as seel and stainless steel are in contact with lead oxides at high temperature. This phenomenon was analysed gravimetrically. The oxidation rate of the iron coated with lead oxide powder has been measured. The oxidation rate at the temperature above 1023K was proportional to the thickness of powder lead oxide layer. In contrast, the oxidation rate reaches a maximum at certain thickness below 1023K. This corrosion behavior was explained by the formation of eutectic mixture composed of a few oxides of iron and lead.
