| 摘要 |
PURPOSE:To prevent the corrosion of a metal to be exposed to high temp. gas contg. HCl by spraying a mixture contg. Cr and Ni at a specific rate on the surface of the metal and further forming a corrosion resistant layer having the compsn. different from said compsn. by spraying. CONSTITUTION:The 1st layer of a mixture I contg. Cr and Ni at 2/8-8/2 by weight of Cr/Ni and the 2nd layer having the compsn. different from the compsn. of the 1st layer thereon are formed respectively by spraying on the surface of a metal such as a structural material or the like to be exposed to high temp. gas, such as combustion gas, contg. HCl, whereby the corrosion of the metal is prevented and the heat energy of the high temp. gas is made utilizable. The above-mentioned 2nd layer consists preferably of 30-70wt% the mixture I and 70-30% at least 1 kind of alkaline material or ceramics, or the substantially equal effect of corrosion resistance is obtd. as well by using said layer consisting substantially of ceramics 70-30% ceramics and 30-70% alkaline material. |
