オーステナイト系ステンレス鋼中のチタン炭化物の定量
1974 年 60 巻 13 号 p. 1957-1961
詳細
1974 年 60 巻 13 号 p. 1957-1961
The favorable methods for isolation and determination of titanium carbide from austenite stainless steel added Ti were examined, and by use of these methods, solubility product constant of titanium carbide in austenite stainless steel was determined.
The results were summarized as follows:
(1) For the isolation titanium carbide from austenite stainless steel, constant current electrolytic method by use of 5% HCl methanol was recommended.
(2) New combustion method for separative analysis of carbides in residue was studied and developed, by which, isolated residue was burned in pure O2gas stream at regulated temperature and CO2produced was determined by conductornetric method. And then amounts of carbides present in residue were found respectively.
(3) Under some presumption, solubility product constant of titanium carbide in austenite stainless steel heat-treated 950°C-1200°C was examined, and logS=-7210/T+3.19 was obtained. Here S is the solubility product constant, and T is absolute temperature.
