第36卷第4期 2016年8月
核科学与工程
Nuclear Science and Engineering
Vol.36No.4
Aug.2016
酸浓度对锆合金酸洗反应动力学行为影响
刘云明，刘超红，李传锋，陈建刚，刘利剑，杜沛南，钱芳
（中国核动力研究设计院，四川成都610213)
摘要：为获取错合金酸洗表面处理动力学行为数据，采用浸泡酸洗法研究了硝酸和氢氟酸浓度对锆合金酸洗速率的影响。结果表明：氢氟酸对错合金具有强烈的溶解作用，其浓度对酸洗速率具有指数影响关系，符合液相反应动力学关系式；硝酸对错合金没有溶解作用，其浓度对酸洗速率有缓蚀作用，具体表现为降低速率常数和反应级数。氢氟酸溶解作用和硝酸的缓蚀作用达到平衡时，可避免锆合金表面出现过酸洗现象且表面光亮洁净，稳定的合理的浓度范围为4.33mol/L 0.68mol/L 中图分类号：TL341
文献标志码：A
文章编号：0258-0918(2016)04-0571-07
EffectofConcentrationonPicklingReaction
Kinetics of Zirconium Alloy
LIU Yun-ming,LIU Chao-hong,LI Chuan-feng, CHENJian-gang,LIULi-jian,DUPei-nan,QIANfang
(Nuclear Power Institute of China,Chengdu,610213)
Abstract:To understand the zirconium-4 alloy pickling-dynamic behavior, the effect of concentration on pickling rate of zirconium alloy was studied in this paper by socked method. The result shows that zirconium alloy has been strongly corroded in HF which concentrationon pickling ratehasan exponential relation andkeepsto liquid reaction kinetics,and zirconium alloy has been hardly corroded in HNO, which concentration on pickling rate has restrained in solution and depresses the rate constant and order of reaction. When the balance is got between the corrosion of HF and the inhibit-corrosion of HNOs,zirconium alloy surface becomes brightness and undefiled.The steady and reasonableconcentrationis4.33mol/L 修稿日期：2016-04-10
作者介：刘云明（1982--），男，硕士，助研，现主要从事反应堆燃料及材料等科研工作
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