Hertzian and nanoindentations on EBPVD-coated gadolinium zirconate thermal barrier materials

被引：2

作者：

Jung, Kyu Ick ^{[1
]}

Park, Sang Hyun ^{[1
]}

Kim, Jong Ho ^{[2
]}

Kim, Do Kyung ^{[2
]}

Paik, Unkyu ^{[3
]}

Lee, Kee Sung ^{[1
]}

机构：

[1] Kookmin Univ, Sch Mech & Automat Engn, 861-1 Jeongneung Dong, Seoul 136702, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejon 305701, South Korea

[3] Hanyang Univ, Dept Ceram Engn, Seoul 133791, South Korea

来源：

ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 | 2007年 / 124-126卷

关键词：

gadolinium; zirconate ceramics; EBPVD; TBC; hertzian/nano indentation;

D O I：

10.4028/www.scientific.net/SSP.124-126.1349

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

New gadolinium-yttrium zirconate thermal barrier coating(TBC) material is deposited by electron beam PVD method, as an alternative to YSZ TBC layer for gas turbine blade applications. XRD analysis reveals that the new TBC material consists of thermally stable pyrochlore structure. Hertzian and nanoindentation evaluations reveal that gadolinium zirconate materials show superior properties as a TBC candidate material with high mechanical properties. The Y2O3 doping improved hardness and elastic modulus of TBC layers. The indentation stress-strain curves by Hertzian indentation and the load-penetration depth curves by nanoindentation indicate that the new TBC layer has higher damage resistance combined with superior thermal insulation properties rather than commercial YSZ coatings.

引用

页码：1349 / +

页数：2

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