无机复合涂层对CB2铁素体耐热钢在650℃水蒸气中的防护  

Protective Performance of a Novel Inorganic Composite Coatings on CB2 Ferritic Heat Resistant Steel at 650℃ in Oxygen Flow with Water Vapor

作　　者：陈艺文[1] 王成 娄霞[1] 李定骏[1] 周科[1] 陈明辉 王群昌 朱圣龙[2,4,5] 王福会 CHEN Yiwen;WANG Cheng;LOU Xia;LI Dingjun;ZHOU Ke;CHEN Minghui;WANG Qunchang;ZHU Shenglong;WANG Fuhui(State Key Laboratory of Long-life High Temperature Materials,Dong Fang Turbine Co.,Ltd.Deyang,61800,China;Shichangxu Advanced Materials Innovation Center,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China;Jiangsu JITRI Road Engineering Technology and Equipment Research Institute Co.,Ltd.Xuzhou 220005,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110189,China;Shenyang National Laboratory for Materials Science,Shenyang 110016,China)

机构地区：[1]长寿命高温材料国家重点实验室东方汽轮机有限公司,德阳618000 [2]中国科学院金属研究所师昌绪先进材料创新中心,沈阳110016 [3]江苏集萃道路工程技术与装备研究所有限公司,徐州220005 [4]东北大学材料科学与工程学院,沈阳110819 [5]沈阳材料科学国家研究中心,沈阳110016

出　　处：《材料研究学报》2021年第9期675-681,共7页Chinese Journal of Materials Research

基　　金：长寿命高温材料国家重点实验室(DTCC28EE190229);国家重点研发计划项目(2018YFB2003601)。

摘　　要：采用物理共混工艺制备无机硅酸盐复合涂层,研究其对ZG12Cr9Mo1Co1NiVNbNB(CB2)铁素体耐热钢在650℃水蒸气中氧化的防护。结果表明,CB2钢在650℃水蒸气中的氧化严重,氧化过程分段遵循抛物线规律,生成了双层非保护性Fe_(2)O_(3)氧化膜。涂装无机硅酸盐复合涂层使CB2钢的氧化速率显著降低,涂层还具有良好的抗热震性能。在涂层与基体钢的界面处生长一层厚度约2μm的富铬氧化层,使合金的抗氧化性能提高。A novel inorganic silicate composite coating was prepared by physical blending process with potassium silicate of module 3.25 as binder,alpha alumina,copper chromium black and white mica as pigment,and proper amount curing agent.Then the oxidation behavior of the ZG12Cr9Mo1Co1NiVNbNB(CB2)ferritic heat resistant steel without and with the composite coating was comparatively investigated at 650℃ in atmosphere of oxygen flow with 20% water vapors.The results show that serious oxidation of CB2 steel occurred,which follows the parabolic law in different periods and resulted in the formation of a two-layered oxide scale of poorly protective Fe_(2)O_(3).The application of the composite coating could reduce markedly the oxidation rate of the CB2 steel,meanwhile the coating presented also excellent resistance to cyclically thermal shock.Furthermore,a thin and continuous Cr-rich oxide layer could be detected on the steel surface beneath the composite coating after the oxidation test,to which the enhancement of oxidation resistance of the coated CB2 steel may be ascribed.

关 键 词：材料失效与保护 无机复合涂层 高温水蒸气氧化 CB2耐热钢 

分 类 号：TG174.45[金属学及工艺—金属表面处理]