Abstract
On the purpose of protecting high temperature oxidation of iron and steel, the spraying of heat resisting alloys as Nichrome alloy or iron-chrome-aluminium alloys, was tested. The life of sprayed specimens was shown in Fig. 1-6, and it was found that the desirable thickness of the sprayed coating was more than 0.3mm. The soundness of sprayed coating of heat resisting alloys was more important factor compared with the case of aluminium spraying.