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Loại tài liệu: Tài liệu số - Journal article
Thông tin trách nhiệm: Hyun-Gil Kim, Jeong-Yong Park, Byung-Kwon Choi, Yong-Hwan Jeong
Nhà Xuất Bản: Elsevier B.V
Năm Xuất Bản: 2007
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The crystalline structure and morphology of zirconium oxide formed in a water at 360 u0002C and 18.9 MPa was investigated by using arnhigh voltage electron microscopy (HVEM). The oxide thickness formed on the Zr–0.4 Nb alloy substrate was about 2.2 lm. In the thinrnoxide layer, the monoclinic and tetragonal phases were mixed with each other and a complex morphology of equiaxed and columnarrngrains were formed during the oxidation process. From the HVEM observation and the imaging process by using the DigitalMicrographTM program, it was found that the correlation of a crystalline orientation between the equiaxed grain and the columnar grainrnwas not formed in the oxide layer, and a defect such as a dislocation which had formed in the tetragonal phase could be extractedrnby the masking tool of the inverse fast Fourier transformation (IFFT).
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