面向垃圾焚烧发电的Al_(2)O_(3)-TiO_(2)陶瓷涂层的耐高温氯腐蚀性能研究  

Study on High Temperature Chlorine Corrosion Resistance of Al_(2)O_(3)-TiO_(2) Ceramic Coating for Waste-To-Energy Incineration

作　　者：苏猛业 柏华斌 洪斌 徐新达 李恒生 SU Meng-ye;BAI Hua-bin;HONG Bin;XU Xin-da;LI Heng-sheng(China Power International New Energy Holding Co.,Ltd.Shanghai 200086,China;Shangqiu China Power Environmental power generation Co.,Ltd.Shangqiu 476000,China;Wuhu China Power Environmental power generation Co.,Ltd.Wuhu 241000,China)

机构地区：[1]中电国际新能源控股有限公司,上海200086 [2]商丘中电环保发电有限公司,河南商丘476000 [3]芜湖中电环保发电有限公司,安徽芜湖241000

出　　处：《全面腐蚀控制》2021年第11期91-95,共5页Total Corrosion Control

摘　　要：针对垃圾焚烧炉的水冷壁的高温氯腐蚀问题,采用等离子喷涂在12Cr1MoV基体上制备了Al_(2)O_(3)-TiO_(2)(x=20%、40%、60%)不同TiO_(2)含量的陶瓷涂层。采用熔盐模拟实验其高温耐氯腐蚀性能;并利用金相显微镜、扫描电子显微镜和能谱仪分析涂层高温氯腐蚀前后结构、微观形貌和元素组成的变化。实验结果表明:三种不同Al_(2)O_(3)-TiO_(2)涂层中,随着TiO_(2)含量的增加涂层高温腐蚀质量变化越小、涂层孔隙和缺陷减少;高温腐蚀后涂层表面均未检测到Cl元素的渗透和残留;综上所述Al2O3-60%TiO_(2)涂层在三种涂层中的结构和高温氯腐蚀性能表现最好。Aiming at the problem of high-temperature chlorine corrosion on the water wall of the waste incinerator,plasma spraying was used to prepare Al_(2)O_(3)-xTiO_(2)(x=20%,40%,60%)ceramic coatings with different TiO_(2) content on the 12Cr1MoV substrate.The molten salt corrosion experiment is used to test its high-temperature chlorine corrosion resistance;metallographic microscope,scanning electron microscope and energy spectrometer are used to analyze the structure,microscopic morphology and element composition of the coating before and after high-temperature chlorine corrosion.The experimental results show that:in the three different Al_(2)O_(3)-xTiO_(2) coatings,with the increase of TiO_(2) content,the weight change of the coating is smaller,the pits and defects of the coating are reduced;after high temperature corrosion,the penetration and remains of Cl element are not detected on the coating surface;in conclusion,the structure and high-temperature chlorine corrosion performance of Al_(2)O_(3)-60%TiO_(2) coating are the best among the three coatings.

关 键 词：Al_(2)O_(3)-TiO_(2) 高温氯腐蚀 等离子喷涂 复合陶瓷涂层 垃圾焚烧发电 

分 类 号：TB37[一般工业技术—材料科学与工程]