1957 年 43 巻 5 号 p. 560-564
A thermodynamic study was carried out on the equilibrium of the reactions C+Ti=TiC (s) and Ti+N=TiN (s) in a cast iron melt containing 4% C, 0.25% Ti, 0.03% S, 0.008% N, and 0.002% O under some assumptions. The formation temperatures of TiO2 (s), TiO (s) and TiS (s) in the same melt were also determined by calculation. Ti in the form of TiC (s) was found to be about 80% of the total Ti content at 1400-1450°C. Though the result was not accurate, the behaviour of Ti in the melt during its slow cooling from about 1800°C could be apploximately estimated.