抄録
The carburizing reaction of steel with the gases produced by the pyrolysis of Prussian blue was carried out in each atmosphere of O2, NH3 and H2S, and the behavior of the atmospheres was investigated.
In O2 atmosphere, the amount of carburization showed obviously a maximum at about 3 cmHg of O2 pressure, and it was approximately proportional to pCO2⁄pCO2. In NH3 atmosphere, the amount of carburization increased gradually with NH3 pressure until 10 cmHg, and it was kept constant above that pressure. In H2S atmosphere, the carburization was accelerated by the existence of H2S, but the sulfurization was suppressed by the carburization and most of the sulfur was segregated in the grainboundary of steel.
