鋼の着色法に就いて(I)

抄録

Synopsis: In order to obtain suitable colour on the surface of high carbon steel, when it was quenched, the sample was treated in the weak oxidizing atomsphere at various conditions, and the colour was measured with the Fujii's colorimeter.
The results are as follows:
1) As the oxidizing power increases, the colour varies from yellow to blue.
2) The reddish purple coloured sample has less content af white and more content of black than other coloured sample when it is measured with the Fujii's colorimeter. The rate of colour variation is maximum in the part of reddish purple.
3) When the sample is more excessively oxidized, its colour becomes all weak blue, and no other colours appear.