Abstract
Abstract The oxidation of copper in nitrogen oxide(700–820°C, 3.5–14 Torr) has been found not only to obey a linear oxidation law, but also to be a first order reaction. The apparent activation energy was 113 KJ/mol. According to the x-ray diffractometry, x-ray photoelectron spectroscopy and ion microanalysis, only Cu2O was found in the oxide layers. The rate determining step was a reaction between nitrogen oxide and the surface of Cu2O and it was shown by an equation: 2NO→N2+2·O2− + 4·⊕.
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