溶鉄中のチタン脱酸
1966 年 52 巻 6 号 p. 959-966
詳細
1966 年 52 巻 6 号 p. 959-966
The interrelations among titanium, oxygen in liquid iron and deoxidation products at 1550°, 1600° and 1650*deg;C were studied.
In this experiment, two effective techniques were developed. One is the use of a thermocouple protected from high frequency interference by an Mo tube inserted for the automatic temperature control and measurement. The other is the application of the Peeling method for the sampling of the deoxidation products for identification.
The following results were obtained.
(1) Primary deoxidation products:
Corresponding the contents of titanium in liquid iron, a few kinds of the primary deoxidation products were identified as follows.
Ti3O5 (anosovite): 0.001<[%Ti]<0.2
Ti2O3 (α-Al2O3 type): 0.2<[%Ti]<2
At higher titanium contents TiO seems to be produced.
(2) Deoxidation equilibrium constant:
In the range of 0.001 to 0.1% Ti and at 1550 to 1650, the reaction was as follows.Ti3O5 (s) =3Ti+5O log K′=-41, 470/T+3.40
