水氧腐蚀对Yb2Si2O7涂层裂纹扩展的影响

被引：1

作者：

丁坤英

刘子剑

王梦潇

张涛

王者

机构：

[1] 中国民航大学,天津市民用航空器适航与维修重点实验室

来源：

硅酸盐学报 | 2024年 / 52卷 / 09期

基金：

国家重点研发计划;

关键词：

双硅酸镱; 环境障涂层; 水氧腐蚀; 有限元分析; 应力分析;

D O I：

暂无

中图分类号：

TB306 [];

学科分类号：

0805 ; 080502 ;

摘要：

双硅酸镱（Yb2Si2O7,Yb DS）与碳化硅复合材料（CMC）基体具有良好的热匹配能力，是目前环境障涂层（EBCs）中常用材料。然而，在高温水氧腐蚀环境中Yb DS向单硅酸镱（Yb2Si O5,Yb MS）的转变导致涂层发生开裂和分层。为了分析水氧腐蚀对相转变和由此引发的EBC内应力的影响，本工作从实验观察和仿真计算，采用大气等离子喷涂制备Si+Yb DS涂层，通过循环热载荷水氧腐蚀实验分析Yb DS涂层的腐蚀产物和腐蚀速率，计算Yb DS腐蚀过程中导致EBC内应力的再分布特征，分析由此引发的裂纹扩展。结果表明，完成沉积后的Yb DS面层受残余压应力作用，而在蒸汽循环腐蚀后的Yb DS涂层中出现了拉应力，较大的应力导致EBC过早开裂。Yb DS成分挥发导致的孔隙增加对腐蚀区的应力影响较大，孔隙也提高了Ⅰ型裂纹的扩展速率。

引用

页码：2981 / 2994

页数：14

共 27 条

[1] Simulation of 1500 °C Thermal Shock for Novel Structural Thermal/Environmental Barrier Coatings System [J].

Li, Kaibin ;

Wang, Weize ;

Yang, Ting ;

Liu, Yangguang .

COATINGS, 2023, 13 (01)

[2] Self-healing ability, strength enhancement, and high-temperature oxidation behavior of silicon carbide-dispersed ytterbium disilicate composite for environmental barrier coatings under isothermal heat treatment [J].

Okawa A. ;

Nguyen S.T. ;

Wiff J.P. ;

Son H.-W. ;

Nakayama T. ;

Hashimoto H. ;

Sekino T. ;

Do T.M.D. ;

Suematsu H. ;

Suzuki T. ;

Goto T. ;

Niihara K. .

Journal of the European Ceramic Society, 2022, 42 (13) :6170-6181

[3]

Influence of Yb2Si2O7 doping concentration on mechanical properties and thermal conductivity of Yb2SiO5-Yb2Si2O7 composite ceramics.[J].Wang Xin;Xue Zhaolu;Zhou Zimin;Byon Eungsun;Zhang Shihong.Journal of Alloys and Compounds.2022,

[4] A comprehensive study on the mechanical properties of Yb2SiO5 as a potential environmental barrier coating [J].

Kassem, Reem ;

Al Nasiri, Nasrin .

SURFACE & COATINGS TECHNOLOGY, 2021, 426

[5]

Evolution of microstructure and thermal conductivity of multifunctional environmental barrier coating systems.[J].Olson David H.;Deijkers Jeroen A.;Quiambao Tomko Kathleen;Gaskins John T.;Richards Bradley T.;Opila Elizabeth J.;Hopkins Patrick E.;Wadley Haydn N.G..Materials Today Physics.2020, prepublish

[6]

Thermochemical stability and microstructural evolution of Yb 2 Si 2 O 7 in high-velocity high-temperature water vapor.[J].Mackenzie Ridley;Elizabeth Opila.Journal of the European Ceramic Society.2020, prepublish

[7] Corrosion of RE2Si2O7 (RE = Y, Yb, and Lu) environmental barrier coating materials by molten calcium-magnesium-alumino-silicate glass at high temperatures [J].

Tian, Zhilin ;

Ren, Xiaomin ;

Lei, Yiming ;

Zheng, Liya ;

Geng, Wanrong ;

Zhang, Jie ;

Wang, Jingyan .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2019, 39 (14) :4245-4254

[8]

High-velocity water vapor corrosion of Yb-silicate: Sprayed vs. sintered body.[J].Bakan Emine;Kindelmann Moritz;Kunz Willy;Klemm Hagen;Vaßen Robert.Scripta Materialia.2019, C

[9] Effect of TGO thickness on the thermal barrier coatings life under thermal shock and thermal cycle loading [J].

Torkashvand, Kaveh ;

Poursaeidi, Esmaeil ;

Mohammadi, Maryam .

CERAMICS INTERNATIONAL, 2018, 44 (08) :9283-9293

[10]

Oxidation and thermal shock resistant properties of Si/Yb2SiO5/NdMgAl11O19 coating deposited on Cf/SiC composites.[J].Cunyan Fan;Binglin Zou;Ling Zhu;Wenjuan Fan;Xiaolong Cai;Ying Wang;Xueqiang Cao.Materials & Design.2017,

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