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Rapid Hydrogen Transportation Along Grain Boundary in NickelYongli Wang,Liangyin Xiong,Shi LiuDepartment of Special Environment Materials,Institute of Metal Research,Chinese Academy of Sciences摘 要:The permeability and diffusivity of hydrogen in directionally solidified polycrystalline and single crystal nickel foils were measured by gas permeation......
FEM ANALYSIS OF THERMAL STRESSES IN GRADIENT THERMAL BARRIER COATINGS PRODUCED BY EB-PVD H.B.Xu1,H.B.Guo1,S.K.Gong1 (1.Department of Materials Science & Engineering, Beijing University of Aeronautics andAstronautics, Beijiug 100083, China) Abstract:Gradient thermal barrier coatings (GTBCs) produced by co-deposition of mixtures ofAl-Al2 O3-YSZ onto metallic bond coat exhibited longer lifetimes......
. For the on-surface adsorption, O and H atoms prefer to occupy the H2 site, while C atoms tend to occupy the H1 site. The diffusion barrier of O atom on U surface is low and the diffusion is easy, which will lead to the formation of uranium-oxidation layer on the top of surface. The diffusion barrier of H atom is larger and that of C atom is the largest one, thus it is difficult for C atom diffusion on the U......
for the study of hydrogen permeation inmetals.关键词:...Analysis of Hydrogen Diffusion in Metals with Trapping under Local Equilibrium Assumption杨柯,曹明洲,万晓景,师昌绪摘 要:<正> The assumption of the local......
with an excellent hydrogen resistant property can act as hydrogen barrier at the temperature below 723 K. But the hydrogen resistant property of the coating becomes bad when it is used at the temperature of 1023...Trans. Nonferrous Met. Soc. China 23(2013) 3300-3305 Effect of heat treatment on surface composition of hydrogen implanted C-SiC coatings Ji-fu DU1, Yong-hong HU1, Zhen DONG1, Guang-xue ZHANG1, Yue......
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Wavelet analysis of acoustic emission signals from thermal barrier coatings YANG Li(杨 丽), ZHOU Yi-chun(周益春) Key Laboratory for Advanced Materials and Rheological Properties of Ministry... to the analysis of acoustic emission signals collected during tensile test of the ZrO2-8% Y2O3 (YSZ) thermal barrier coatings (TBCs). The acoustic emission signals are de-noised using the Daubechies discrete......
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