王国红,姚海华,周正,王一鸣,吴旭,贺定勇

• 1:北京市生态环境材料及其评价工程技术研究中心
• 2:北京工业大学材料学院

摘要(Abstract)：

为提高垃圾焚烧炉过热器的抗高温氧化和磨损性能,采用两种不同硼含量的NiCrB粉芯丝材,通过电弧喷涂方法在SA213-T2钢基体表面制备涂层,并对涂层的微观组织结构、高温氧化行为和显微硬度与商用NiCrTi涂层进行对比研究。结果表明:制备的NiCrB涂层呈典型的层状结构,孔隙率约为3%,氧化物含量较低,涂层的显微硬度明显高于NiCrTi涂层。NiCrB涂层在800℃下的氧化增重明显低于基体,其中B含量较低的NiCrB涂层氧化动力学曲线呈典型的抛物线形式,表面生成了连续致密的Cr_2O_3氧化膜,有效阻止了氧向涂层内部的渗透,对基材起到较好的防护作用,抗高温氧化性能略低于NiCrTi涂层。

关键词(KeyWords)： NiCrB粉芯丝材;电弧喷涂;高温氧化;显微硬度

Abstract:

Keywords:

基金项目(Foundation): 北京市自然科学基金(2142010);; 稀土资源利用国家重点实验室开放课题基金(RERU2016016)

作者(Author): 王国红,姚海华,周正,王一鸣,吴旭,贺定勇

DOI: 10.13289/j.issn.1009-6264.2017.03.024

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