摘要
利用激光熔覆技术在20G钢表面熔覆合金涂层,分析了激光熔覆层的微观组织,利用高温腐蚀试验和烟气模拟腐蚀试验测试激光熔覆层的耐腐蚀性能。结果表明:细小晶粒与有较高韧性的非晶相夹杂并弥散于金属间化合物的复合组织具有良好的抗高温腐蚀、抗烟气腐蚀性能,可应用于垃圾焚烧锅炉受热面,改善其表面的耐腐蚀性能。
The laser cladding technology was used to clad the alloy coating on the surface of 20G steel tube,the microstructure of the laser cladding layer was analyzed,the corrosion resistance of laser cladding layers was tested by using high temperature corrosion test and flue gas simulation test.The resluts showed that the composite structure in which fine grains and amorphous phases mixed and dispersed in intermetallic compounds has high toughness,good high temperature corrosion resistance and flue gas corrosion resistance.It can be applied to the heating surface of waste incineration boilers to improve the corrosion resistance of the surface.
作者
王义厢
张长东
公磊
WANG Yixiang;ZHANG Changdong;GONG Lei(Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310030,Zhejiang,China)
出处
《工业锅炉》
2023年第2期23-26,50,共5页
Industrial Boilers
关键词
20G钢管
激光熔覆
非晶
复合涂层
高温腐蚀
烟气腐蚀
20G steel tube
laser cladding
amorphous phases
composite coating
high temperature corrosion
flue gas corrosion