Review of the oxidation rate of zirconium alloys.

Causey, Rion A. (Sandia National Laboratories, Livermore, CA) ; Cowgill, Donald F. (Sandia National Laboratories, Livermore, CA) ; Nilson, Robert H. (Sandia National Laboratories, Livermore, CA)

Sandia National Laboratories

关键词: 36 Materials Science;    Oxygen;    Zirconium Alloys;    Oxidation;    Thickness;   

DOI  :  10.2172/876346
RP-ID  :  SAND2005-6006
RP-ID  :  AC04-94AL85000
RP-ID  :  876346

美国|英语

来源: UNT Digital Library

【 摘 要 】

The oxidation of zirconium alloys is one of the most studied processes in the nuclear industry. The purpose of this report is to provide in a concise form a review of the oxidation process of zirconium alloys in the moderate temperature regime. In the initial ''pre-transition'' phase, the surface oxide is dense and protective. After the oxide layer has grown to a thickness of 2 to 3 {micro}m's, the oxidation process enters the ''post-transition'' phase where the density of the layer decreases and becomes less protective. A compilation of relevant data suggests a single expression can be used to describe the post-transition oxidation rate of most zirconium alloys during exposure to oxygen, air, or water vapor. That expression is: Oxidation Rate = 13.9 g/(cm{sup 2}-s-atm{sup -1/6}) exp(-1.47 eV/kT) x P{sup 1/6} (atm{sup 1/6}).