抄録
This report describes the chromizing capability relating to the depth of chromium layer and a method for measuring the depth. The measurements were made by electric resistance and thermoelectromotive force methods with chromized carbon steel and nickel wires. The electric resistivity of chromized carbon steel wire increases in proportion to the depth of chromium layer. It has become clear that the electromotive force of the sensor consisted of chromized carbon steel wire-nickel wire increases proportionally to the depth of chromium layer. This is the same with the chromized nickel wire-nickel wire sensor. Thus the gas chromizing process can be controlled by measuring the electromotive force of these sensors.
