水化学对Zr-4合金氧化膜/基体界面处压应力的影响  

The Effect of Water Chemistry on Compressive Stress at Interface of Oxide/Matrix of Zircaloy-4

作　　者：刘文庆[1] 李强[1] 周邦新[1] 姚美意[1] 

机构地区：[1]上海大学材料研究所,上海200072

出　　处：《稀有金属材料与工程》2004年第10期1112-1115,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(5017103950301009);上海市教委科学技术发展基金资助项目(03AK24)

摘　　要：测量和比较Zr-4合金样品分别在400℃,10.3MPa过热水蒸汽,0.01mol/L和0.04mol/L的LiOH水溶液中腐蚀后氧化膜/金属界面处氧化膜内的压应力,发现在0.04mol/LLiOH水溶液中腐蚀样品的压应力始终低于在0.01mol/LLiOH水溶液中腐蚀的样品,也始终低于在400℃水蒸汽中腐蚀的样品;0.01mol/LLiOH水溶液中腐蚀的样品,其界面处的压应力在氧化膜达到一定厚度后也低于在400℃水蒸汽中腐蚀的样品。这表明一定浓度的LiOH水溶液在氧化膜生成过程中会降低氧化膜中的压应力,LiOH水溶液浓度越高,这种作用越明显。The compressive stress at interface of oxide/matrix of Zr-4 alloy specimens exposed in 400degreesC, 10.3 MPa superheated steam, 0.01 mol/L and 0.04 mol/L LiOH aqueous solution individually were measured and compared. It was found that the compressive stress of specimen exposed in 0.04 mol/L LiOH aqueous solution was always lower than that of specimens exposed in 0.01 mol/L LiOH aqueous solution and 400degreesC superheated steam; the compressive stress of specimen exposed in 0.01 mol/L LiOH aqueous solution was lower than that of specimens exposed in 400degreesC superheated steam when the thickness of oxide reached to a range. The results indicated that high concentration LiOH aqueous solution would play down the compressive stress in the oxide and the higher the concentration, the more obvious the effect.

关 键 词：水化学 ZR-4合金 压应力 

分 类 号：TG172[金属学及工艺—金属表面处理]