摘要
研究了纳米结构锆合金氧化过程中 ZrO2晶格常数的变化。结果表明,氧化过程中,纳米组织合金基底上形成的 ZrO2晶格常数变化与普通粗晶基底上形成的 ZrO2晶格常数变化有显著不同。纳米组织合金基底上形成的 t-ZrO2,晶胞体积在氧化过程中不断缩小,由 t-ZrO2转变形成的 m-ZrO2晶胞体积也在不断减小;而普通粗晶基底上形成的 t-ZrO2晶胞体积减小时,转变形成的 m-ZrO2晶胞体积却在不断膨胀。对此并进行了分析讨论。
In this paper a nanocrystalline zircaloy-4 was corroded under 673 K/10.3 MPa, and the change of lattice constant of ZrO2 during the phase transition was studied. The results show that the change of the lattice constant of ZrO2 formed on the nanocrystalline base is very different from that of lattice constant of ZrO2 formed on the coarse grain base. The unit cell yolume of the tetragonal ZrO2 and monoclinic ZrO2 formed on the nanocrystalline base is constricted during the oxidation process. However, for the coarse grain base, the unit cell volume of the tetragonal ZrO2 is constricted, and the unit cell volume of the monoclinic ZrO2 is inflated.. This phenomenon was discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第7期1149-1152,共4页
Rare Metal Materials and Engineering
基金
the Chinese National Natural Science Fund (50461001)
National Key Laboratory for Nuclear Fuels and Materials found (514810501)
Guangxi Science and Technology Fund (0575-18, 0639003)
Guangxi University Science Found (2005ZD04)
关键词
锆合金
腐蚀
纳米结构金属
晶格常数
X射线衍射
zircaloy
corrosion
nanocrystalline metal
lattice constant
X-ray diffraction
