| 摘要 |
<p>Coating is sprayed from nozzles, and also resists heat. It is formed integrally in and on the outer surface layer of the article. Preferably, it consists of WC, Zr oxide, Al2O3 or MgO-Al2O3 spinel. The steel is Si or nitride steel and has a permanent perlite or martensite structure. The coating is sprayed as powder.</p> |
