Structure design and fabrication of environmental barrier coatings for crack resistance

被引：27

作者：

Liu, Jia ^{[1
]}

Zhang, Litong ^{[1
]}

Liu, Qiaomu ^{[3
]}

Cheng, Laifei ^{[1
]}

Wang, Yiguang ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

[3] China Gas Turbine Estab, Chengdu 610500, Sichuan, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 08期

关键词：

Environmental barrier coatings; Foreign object damage; BSAS; Sc2Si2O7; Elastic-modulus-graded layer; FOREIGN OBJECT DAMAGE; CERAMIC-MATRIX COMPOSITES; WATER-VAPOR; C/SIC COMPOSITES; OXIDATION BEHAVIOR; SILICOALUMINUM CARBONITRIDE; CORROSION BEHAVIOR; SIC/SIC COMPOSITES; SIALCN CERAMICS; PARTICLE IMPACT;

D O I：

10.1016/j.jeurceramsoc.2013.12.049

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The elastic-modulus-graded environmental barrier coatings (EMG-EBCs) were designed and fabricated to resist crack propagation in this study. The cracks were introduced on the surface of EMG-EBCs by an indentator at room temperature to simulate the damages by foreign object impact. As a comparison, two single-layer coatings of Sc2Si2O7 and barium strontium aluminosilicate (BSAS) were also fabricated and cracks were introduced on their surface with the same conditions of the EMG-EBCs. The results showed that the EMG-EBCs could resist the cracks from propagating through them due to the variation in elastic modulus along the depth beneath the surface, and thus could protect the composites from water-vapour corrosion, while the cracks could cross the single Sc2Si2O7 or BSAS coating to provide channels for oxidative gas diffusing and attacking the composites inside. It is indicated that the EMG-EBCs could effectively resist the foreign object damage. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：2005 / 2012

页数：8

共 34 条

[1] Silicoaluminum carbonitride with anomalously high resistance to oxidation and hot corrosion [J].

An, LN ;

Wang, YG ;

Bharadwaj, L ;

Zhang, LG ;

Fan, Y ;

Jiang, DP ;

Sohn, YH ;

Desai, VH ;

Kapat, J ;

Chow, LC .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (05) :337-340

[2] Impact resistance of uncoated SiC/SiC composites [J].

Bhatt, Ramakrishna T. ;

Choi, Sung R. ;

Cosgriff, Laura M. ;

Fox, Dennis S. ;

Lee, Kang N. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 476 (1-2) :20-28

[3] Development of 1232°C (2250°F) erosion and impact tests for thermal barrier coatings [J].

Bruce, RW .

TRIBOLOGY TRANSACTIONS, 1998, 41 (04) :399-410

[4] Foreign object damage in a thermal barrier system: mechanisms and simulations [J].

Chen, X ;

Wang, R ;

Yao, N ;

Evans, AG ;

Hutchinson, JW ;

Bruce, RW .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 352 (1-2) :221-231

[5] Particle impact on metal substrates with application to foreign object damage to aircraft engines [J].

Chen, X ;

Hutchinson, JW .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2002, 50 (12) :2669-2690

[6] Effect of glass sealing on the oxidation behavior of three dimensional C/SiC composites in air [J].

Cheng, LF ;

Xu, YD ;

Zhang, LT ;

Gao, R .

CARBON, 2001, 39 (08) :1127-1133

[7] Foreign object damage in flexure bars of two gas-turbine grade silicon nitrides [J].

Choi, SR ;

Pereira, JM ;

Janosik, LA ;

Bhatt, RT .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 379 (1-2) :411-419

[8] Elastic Modulus Evolution and Behavior of Si/Mullite/BSAS-Based Environmental Barrier Coatings Exposed to High Temperature in Water Vapor Environment [J].

Cojocaru, C. V. ;

Kruger, S. E. ;

Moreau, C. ;

Lima, R. S. .

JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2011, 20 (1-2) :92-99

[9] Accelerated oxidation of SiCCMC's by water vapor and protection via environmental barrier coating approach [J].

Eaton, HE ;

Linsey, GD .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (14-15) :2741-2747

[10] Water Vapor Corrosion Behavior of Scandium Silicates at 1400°C [J].

Hong, Zhiliang ;

Cheng, Laifei ;

Zhang, Litong ;

Wang, Yiguang .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (01) :193-196

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