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本文论述了电弧喷涂的Cr13钢、铝青铜及二者的伪合金在较高的温度环境下不受损坏的原理。当工件是平板状而且温度过高时(例如900℃),存在涂层边缘挠起的危险。喷涂于外圆的铝青铜涂层可以承受5次900℃的热冲击而无损坏迹象。Cr13钢涂层不能承受这种热冲击。 加热使涂层中的铝与铬向基体中扩散。它会增强涂层与基体的结合。这种扩散区是孤立的。因而结合强度的提高也是有限的。
This article discusses the principle of arc-sprayed Cr13 steel, aluminum bronze and the pseudo-alloys of both, which are not damaged at higher temperatures. When the work piece is flat and the temperature is too high (for example, 900 ° C), there is a risk that the edge of the coating will be torn up. The aluminum bronze coating applied to the outer circumference can withstand five thermal shocks of 900 ° C without any signs of damage. Cr13 steel coating can not withstand this thermal shock. Heating causes the aluminum and chromium in the coating to diffuse into the matrix. It enhances the bond between the coating and the substrate. This diffusion zone is isolated. Therefore, the improvement of bonding strength is also limited.