Plasma sprayed duplex ytterbium disilicate/monosilicate EBCs and the transformation from ytterbia to ytterbium monosilicate during burner rig testing

被引：8

作者：

Bakan, Emine ^{[1
]}

Zhou, Dapeng ^{[1
]}

Mack, Daniel E. ^{[1
]}

Koch, Dietmar ^{[2
]}

Vassen, Robert ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Energy & Climate Res Mat Synth & Proc IEK 1, D-52425 Julich, Germany

[2] Univ Augsburg, Inst Mat Resource Management, D-86159 Augsburg, Germany

来源：

CORROSION SCIENCE | 2024年 / 235卷

关键词：

EBC; SiC/SiC CMC; Burner rig; Steam corrosion; Ytterbium silicate; THERMAL-BARRIER COATINGS; WATER-VAPOR CORROSION; HIGH-TEMPERATURE; Y2O3-SIO2; SYSTEM; SILICA ACTIVITY; COMPOSITES; DEPOSITION; BEHAVIORS; OXIDATION; LU;

D O I：

10.1016/j.corsci.2024.112174

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Environmental Barrier Coating systems (EBCs) were thermally cycled in a burner rig test facility. Yb2Si2O7 (YbDS) layer was deposited by air plasma spraying while two suspension plasma sprayed Yb2SiO5 (YbMS) microstructures were evaluated in duplex (YbDS/YbMS) systems: columnar and segmentation cracked. EBCs underwent 2000 cycles at a surface temperature of 1300 degrees C without signs of delamination failure. A porous YbMS layer formed at the base of intercolumnar gaps and segmentation cracks in the duplex systems, presumably due to reactions with entrapped water vapor. Furthermore, Yb2O3 depletion zones were evident at both the surface and YbDS/YbMS interface of the duplex EBCs.

引用

页数：10

共 51 条

[1] Sintering and creep processes in plasma-sprayed thermal barrier coatings [J].