5种电站锅炉过热器用材料高温腐蚀试验研究  

Experimental Study on High Temperature Corrosion of Five Superheater Materials for Power Plant Boilers

作　　者：成丁南[1] 张知翔[2] 边宝[3] 邓翔[1] 姜薇薇[1] 赵钦新[1] 

机构地区：[1]西安交通大学热流科学与工程教育部重点实验室,西安710049 [2]西安热工研究院有限公司,西安710032 [3]上海锅炉厂有限公司,上海200245

出　　处：《动力工程学报》2012年第11期891-897,共7页Journal of Chinese Society of Power Engineering

基　　金：“十二五”国家支撑计划重点项目(2011BAK06B04)

摘　　要：选取超超临界电站锅炉高温过热器用钢Tempaloy AA-1、Super 304H、TP347HFG、Tem-paloy A-3和HR3C为研究对象,在实验室真空炉中模拟实际烟气进行气相和气相-熔盐两相高温腐蚀试验.提出用腐蚀层厚度和迁移渗透深度之和作为衡量腐蚀速率的指标,分别得到5种钢的抗气相及气相-熔盐两相高温腐蚀能力.结果表明:5种过热器材料抗气相高温腐蚀的能力都很强;Tempaloy A-3、TP347HFG、Super304H、Tempaloy AA-1和HR3C5种钢的抗气相-熔盐腐蚀的能力依次增强;过热器材料的腐蚀主要是气相-熔盐两相腐蚀.Taking following 5 materials for ultra supercritical boiler superheater as the objects of study, such as Tempaloy AA-1, Super 304H, TP347HFG, Tempaloy A-3 and HR3C, experimental tests were carried out in a laboratory vacuum oven to study their corrosion resistance respectively to high-temperature gas and gas-liquid （molten salt） two-phase flows. A new index was proposed to evaluate the corrosion rate by adding up the thickness of corrosion layer and the migration depth of corrosive elements, based on which high-temperature corrosion resistance was obtained for above 5 materials. Results show that all the 5 materials have a strong resistance to high-temperature corrosion in gas atmosphere, and their corrosion resistances in gas-liquid atmosphere are in following increasing order, Tempaloy A-3, TP347HFG, Super 304H, Tempaloy AA-1 and HR3C. The corrosion sustained by superheater materials is mainly of the gas- liquid two-phase kind.

关 键 词：电站锅炉 过热器 高温腐蚀 元素迁移 

分 类 号：TK224.9[动力工程及工程热物理—动力机械及工程]