Environmental Barrier Coatings for Silicon Nitride

被引：14

作者：

Chen, Hong-fei ^{[1
]}

Klemm, Hagen ^{[1
]}

机构：

[1] IKTS Dresden, Fraunhofer Inst Ceram Mat & Syst, D-01277 Dresden, Germany

来源：

ADVANCED ENGINEERING CERAMICS AND COMPOSITES | 2011年 / 484卷

关键词：

Ytterbium silicate; Environmental barrier coatings (EBCs); Dip-coating; Burner rig test; OXIDATION RESISTANCE; SI3N4; CERAMICS; 1500-DEGREES-C; STABILITY; CORROSION; STRENGTH; MULLITE;

D O I：

10.4028/www.scientific.net/KEM.484.139

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：

Ytterbium silicate layers were deposited on Si3N4 ceramics as environmental barrier coatings (EBCs) by a dip coating-sintering method. Coated samples were tested in an atmosphere simulating the practical conditions of a gas turbine to investigate water vapor corrosion and recession mechanisms of ytterbium silicate coatings. Prior and after tests, phase compositions and morphologies of the coatings varied as the consequence of the formation of silica at the coating/substrate interface. Due to the evaporation and diffusion of silica into the upper layer, a porous interface was finally found, which led to the spallation of coating.

引用

页码：139 / 144

页数：6

共 12 条

[1]

[Anonymous], T ASME

[2] High temperature strength and oxidation behaviour of hot-pressed silicon nitride disilicate ceramics [J].

Choi, HJ ;

Lee, JG ;

Kim, YW .

JOURNAL OF MATERIALS SCIENCE, 1997, 32 (07) :1937-1942

[3] Paralinear oxidation of silicon nitride in a water-vapor/oxygen environment [J].

Fox, DS ;

Opila, EJ ;

Nguyen, QN ;

Humphrey, DL ;

Lewton, SM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (08) :1256-1261

[4] Corrosion of selected ceramic materials in hot gas environment [J].

Fritsch, Marco ;

Klemm, Hagen ;

Herrmann, Matthias ;

Schenk, Bjoern .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (16) :3557-3565

[5] Long-term stability of nonoxide ceramics in an oxidative environment at 1500 °C [J].

Klemm, H ;

Taut, C ;

Wötting, G .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (04) :619-627

[6] Corrosion of silicon nitride materials in gas turbine environment [J].

Klemm, H .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2002, 22 (14-15) :2735-2740

[7]

Klemm H, 2001, J AM CERAM SOC, V84, P2430, DOI 10.1111/j.1151-2916.2001.tb01027.x

[8] Rare earth silicate environmental barrier coatings for SiC/SiC composites and Si3N4 ceramics [J].

Lee, KN ;

Fox, DS ;

Bansal, NP .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (10) :1705-1715

[9] Development and environmental durability of mullite and mullite/YSZ dual layer coatings for SiC and Si3N4 ceramics [J].

Lee, KN ;

Miller, RA .

SURFACE & COATINGS TECHNOLOGY, 1996, 86 (1-3) :142-148

[10] Silicon nitride/silicon carbide nanocomposite materials: II, hot strength, creep, and oxidation resistance [J].

Rendtel, A ;

Hubner, H ;

Herrmann, M ;

Schubert, C .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1998, 81 (05) :1109-1120

← 1 2 →