TY - JOUR
T1 - Hardness and Young's modulus of nanoporous EB-PVD YSZ coatings by nanoindentation
AU - Jang, Byung Koog
AU - Matsubara, Hideaki
N1 - Funding Information:
The authors acknowledge the financial support of the New Energy and Industrial Technology Development Organization (NEDO), Japan.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/10/27
Y1 - 2005/10/27
N2 - A nanoindentation technique for determining hardness and Young's moduli is applied to electron beam-physical vapor deposition (EB-PVD) ZrO2-4 mol%Y2O3 coatings. The porosity of the coatings increased with increasing substrate rotation speed during deposition. The hardness and Young's modulus showed a significant dependence on the substrate rotation speed and measurements made on columnar structures were strongly anisotropic. The hardness and Young's modulus of the surface regions of the coatings is found to be higher than that of the side regions. The hardness and Young's moduli of the surface regions of the coatings have a nearly constant value of approximately 10 GPa and 230-250 GPa, respectively, whereas those of the side areas decreased with increasing substrate rotation speed.
AB - A nanoindentation technique for determining hardness and Young's moduli is applied to electron beam-physical vapor deposition (EB-PVD) ZrO2-4 mol%Y2O3 coatings. The porosity of the coatings increased with increasing substrate rotation speed during deposition. The hardness and Young's modulus showed a significant dependence on the substrate rotation speed and measurements made on columnar structures were strongly anisotropic. The hardness and Young's modulus of the surface regions of the coatings is found to be higher than that of the side regions. The hardness and Young's moduli of the surface regions of the coatings have a nearly constant value of approximately 10 GPa and 230-250 GPa, respectively, whereas those of the side areas decreased with increasing substrate rotation speed.
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U2 - 10.1016/j.jallcom.2005.02.064
DO - 10.1016/j.jallcom.2005.02.064
M3 - Article
AN - SCOPUS:25844437146
SN - 0925-8388
VL - 402
SP - 237
EP - 241
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -