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中国腐蚀与防护学报  2019, Vol. 39 Issue (5): 411-416    DOI: 10.11902/1005.4537.2019.137
  研究报告 本期目录 | 过刊浏览 |
金属搪瓷高温防护涂层的制备及其抗热震行为研究
李烽杰,陈明辉(),张哲铭,王硕,王福会
东北大学 沈阳材料科学国家研究中心腐蚀与防护研究部 沈阳 110819
Preparation and Thermal Shock Behavior of a Metal-enamel High-temperature Protective Coating
LI Fengjie,CHEN Minghui(),ZHANG Zheming,WANG Shuo,WANG Fuhui
Corrosion and Protection Division, Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
全文: PDF(5059 KB)   HTML
摘要: 

以低软化点的硼硅酸盐搪瓷作为粘结相,制备了金属搪瓷高温防护涂层,并研究了涂层的抗热震剥落行为。结果表明,硼硅酸盐搪瓷中含有SiO2的比例越高,搪瓷软化点越高。在硼硅比为0.6 (质量分数) 时,该搪瓷软化温度高于750 ℃。热震结果显示,含20%镍颗粒的金属搪瓷复合涂层抗热震性能优异,热震30次后涂层表面完好;而无金属颗粒添加或者金属含量过高 (40%) 时,热震条件下搪瓷涂层易开裂剥落。

关键词 搪瓷涂层高温合金热震    
Abstract

A metal-enamel composite high temperature protective coating was prepared by using borosilicate enamel with low softening point as bonding phase. Its thermal shock behavior was investigated via cyclically heating at 900 ℃ and quenching into room-temperature water. The higher the proportion of silica, the higher the softening point of the borosilicate enamel. When the ratio (mass fraction) of boron oxide to silica reaches 0.6, the softening point of the borosilicate enamel is higher than 750 ℃. Thermal shock test indicated that the metal-enamel composite coating containing 20% nickel particles had high thermal shock resistance, and the coating surface was intact after 30 thermal shock cycles. The enamel coating is easy to crack and peel under thermal shock condition when no metal particles are incorporated or the metal content is as high as 40%.

Key wordsenamel coating    superalloy    thermal shock
收稿日期: 2019-08-29     
ZTFLH:  TG174.4  
基金资助:国家自然科学基金(51871053)
通讯作者: 陈明辉     E-mail: mhchen@mail.neu.edu.cn
Corresponding author: Minghui CHEN     E-mail: mhchen@mail.neu.edu.cn
作者简介: 李烽杰,男,1992年生,博士生

引用本文:

李烽杰,陈明辉,张哲铭,王硕,王福会. 金属搪瓷高温防护涂层的制备及其抗热震行为研究[J]. 中国腐蚀与防护学报, 2019, 39(5): 411-416.
Fengjie LI, Minghui CHEN, Zheming ZHANG, Shuo WANG, Fuhui WANG. Preparation and Thermal Shock Behavior of a Metal-enamel High-temperature Protective Coating. Journal of Chinese Society for Corrosion and protection, 2019, 39(5): 411-416.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.137      或      https://www.jcscp.org/CN/Y2019/V39/I5/411

Enamel powderB2O3SiO2Al2O3Na2OZrO2B2O3/SiO2
BS0.630.7551.2551210.6
BS0.845.5636.4451210.8
BS1.041.0041.0051211.0
BS1.244.7337.2751211.2
表1  4种搪瓷的成分 (mass fraction / %)
ContentCCrAlCoWBTiMoNbHfZrNi
Mass fraction/%0.0715.53.110.85.20.074.81.90.20.200.05Bal.
Atomic fraction/%0.3017.16.610.51.60.405.71.10.10.060.03Bal.
表2  K444高温合金的成分
CoatingBS0.6Al2O3Ni
N060400
N20483220
N40362440
表3  3种涂层的成分 (mass fraction / %)
图1  搪瓷样品的红外吸收光谱
图2  搪瓷样品在不同温度下的软化情况
图3  制备态复合涂层的宏观形貌
图4  制备态复合涂层的表面形貌
图5  制备态复合涂层的截面形貌
图6  搪瓷涂层热震动力学曲线
图7  热震后样品的宏观形貌
图8  3种搪瓷涂层热震循环30次后截面与表面微观形貌
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