Microstructure and deuterium permeation resistance of the oxide scale prepared by initial oxidation method on vacuum solar receiver

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• 作者：Qinghe Yu ; ^{yqhkevin@126.com} ; Lei Hao ; Shuai Li ; Di He ; Xiaopeng Liu ; Lijun Jiang ; Shumao Wang
• 关键词：Initial oxidation method ; Vacuum solar receiver ; H2&ndash ; H2O mixture ; Cr2O3 scale ; Deuterium permeation resistance
• 刊名：Solid State Ionics
• 出版年：2013
• 出版时间：4 February, 2013
• 年：2013
• 卷：231
• 期：Complete
• 页码：5-10
• 全文大小：1791 K

文摘

Deuterium permeation resistant scales on vacuum solar receiver were developed by initial oxidation method. The initial oxidation atmosphere was produced by the H₂-H₂O mixtures at 827 ¡ãC, with a low oxygen partial pressure of about 10^? 19 Pa. The phases and morphologies of the oxide scales were characterized by using X-ray diffraction (XRD), scanning electron microscope (SEM), X photoelectron spectroscopy (XPS) and transmission electron microscope (TEM). The formation of an oxide scale was observed with an inner layer essentially composed of chromium oxide and an outer layer mainly consisting of Mn_1.5Cr_1.5O₄ spinels. The deuterium permeation of 316L stainless steel coated with Cr₂O₃ scale was only 1/80 of that of uncoated 316L stainless steel under loading of 80 KPa at 600 ¡ãC. The chromium oxide developed on the surface of 316L stainless steel revealed a marked inhibiting effect on the permeability of the deuterium and the associated mechanisms were discussed.