无机复合涂层对<strong>CB2</strong>铁素体耐热钢在<strong>650℃</strong>水蒸气中的防护

doi:10.11901/1005.3093.2020.309

材料研究学报

2021, Vol. 35

Issue (9): 675-681 DOI: 10.11901/1005.3093.2020.309

研究论文

本期目录 | 过刊浏览

无机复合涂层对CB2铁素体耐热钢在650℃水蒸气中的防护

陈艺文¹, 王成¹^,³(

), 娄霞¹, 李定骏¹, 周科¹, 陈明辉⁴^,⁵, 王群昌⁴, 朱圣龙²^,⁴^,⁵, 王福会⁴^,⁵

^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

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

CHEN Yiwen¹, WANG Cheng¹^,³(

), LOU Xia¹, LI Dingjun¹, ZHOU Ke¹, CHEN Minghui⁴^,⁵, WANG Qunchang⁴, ZHU Shenglong²^,⁴^,⁵, WANG Fuhui⁴^,⁵

^1.State Key Laboratory of Long-life High Temperature Materials, Dong Fang Turbine Co. , Ltd. Deyang, 61800, China
^2.Shichangxu Advanced Materials Innovation Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
^3.Jiangsu JITRI Road Engineering Technology and Equipment Research Institute Co. , Ltd. Xuzhou 220005, China
^4.School of Materials Science and Engineering, Northeastern University, Shenyang 110189, China
^5.Shenyang National Laboratory for Materials Science, Shenyang 110016, China

引用本文:

陈艺文, 王成, 娄霞, 李定骏, 周科, 陈明辉, 王群昌, 朱圣龙, 王福会. 无机复合涂层对CB2铁素体耐热钢在650℃水蒸气中的防护[J]. 材料研究学报, 2021, 35(9): 675-681.
Yiwen CHEN, Cheng WANG, Xia LOU, Dingjun LI, Ke ZHOU, Minghui CHEN, Qunchang WANG, Shenglong ZHU, Fuhui WANG. Protective Performance of a Novel Inorganic Composite Coatings on CB2 Ferritic Heat Resistant Steel at 650℃ in Oxygen Flow with Water Vapor[J]. Chinese Journal of Materials Research, 2021, 35(9): 675-681.

全文: PDF(9694 KB) HTML

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°C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Fe₂O₃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2 μm的富铬氧化层，使合金的抗氧化性能提高。

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

Abstract：

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°C 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 Fe₂O₃. 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.

Key words： materials failure and protection inorganic compound coatings high temperature water vapor oxidation CB2 heat resistance steel

收稿日期: 2020-07-23

ZTFLH:

TG174.45

基金资助: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)

作者简介: 陈艺文，男，1986年生，工程师

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	周科
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	王群昌
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	王福会
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https://www.cjmr.org/CN/10.11901/1005.3093.2020.309 或 https://www.cjmr.org/CN/Y2021/V35/I9/675

图1 CB2钢在650℃水蒸气中的氧化动力学曲线

表1 CB2耐热钢氧化动力学曲线的抛物线拟合结果

图2 CB2耐热钢在650℃、水蒸气中氧化后的SEM形貌

图3 CB2耐热钢的XRD谱

图4 涂装涂层的CB2耐热钢在650℃、水蒸气环境中氧化后的SEM形貌

图5 涂层热震50次后的SEM形貌

图6 涂装复合涂层的CB2耐热钢氧化后的EDS能谱线扫描

图7 涂层与CB2钢界面的富Cr氧化层

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