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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
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)
关键词
水化学
ZR-4合金
压应力
water chemistry
zircaloy-4
compressive stress
