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垃圾焚化厂产生的热量可用于发电和集中供热。一些金属部件,例如热交换器,处于腐蚀性很强的气氛中。基体材料在氯含量很高的气氛中损耗非常快,影响了材料的使用寿命,且带来了高昂的维护费用。在传统的钢材表面喷涂一层防腐涂层,可以显著地改善其表面性能。由于电弧喷涂容易实现并且成本较低,其已成为一种较有成效的喷涂方法。热喷涂镍钴基合金涂层目前已达到先进技术水平,而采用铁基合金作为其替代品则为取得可观的经济效益。最新的研究结果表明在FeCr和NiCr合金的基础上加入硅后可提高其耐腐蚀性能。为了确证这些材料的潜能,本研究制备出不同成分的药芯焊丝并采用电弧喷涂技术进行喷涂。最终在含氯气体环境中测试试样的抗氧化性能。
The heat generated by the waste incineration plant can be used for power generation and district heating. Some metal parts, such as heat exchangers, are in a highly corrosive atmosphere. The matrix material dissipates very quickly in an atmosphere of high chlorine content, affecting the useful life of the material and resulting in high maintenance costs. The traditional steel surface sprayed with a layer of anti-corrosion coating, can significantly improve the surface properties. Since arc spraying is easy to implement and less costly, it has become a more effective spraying method. Thermal spray nickel-cobalt-based alloy coating has reached the advanced technology level, and the use of iron-based alloy as a substitute for the considerable economic benefits. The latest research results show that the addition of silicon on the basis of FeCr and NiCr alloys can improve its corrosion resistance. In order to confirm the potential of these materials, this study prepared a different composition of the flux cored wire and arc spraying technology for spraying. The final oxidation resistance of the test specimen was tested in a chlorine-containing atmosphere.