Dynamic process simulation of solute grain boundary segregation;
溶质原子晶界偏聚动力学过程的数值模拟
Methodological probe into grain boundary etching of molybdenum disilicide based materials;
二硅化钼基材料的晶界腐蚀方法探讨
The chemical composition at the crystal boundary of transparent ceramics was observed and the concentration distribution of rare earth oxide in stable state was measured by electron microprobe analysis.
以ＥＰＭＡ法观测透明陶瓷晶界处的化学组成及稀土氧化物的定态浓度分布，用非平衡态热力学理论分析晶界偏析行为。
Al_2O_3distributed along crystal boundary,silicate impurities,separated carbon compound and σ phase together brought about crystal boundary weakening and resulted in high sensitivity for interdendritic corrosion.
沿晶界分布的A l2O3和硅酸盐杂质、析出碳化物、σ相,它们共同构成了晶界弱化的因素,致使晶间腐蚀的敏感性加大。
The application of electroscope and pulse polishing technology enables the field ion microscope atomprobe (FIM AP) on the sample to locate itself successfully the crystal boundary, moreover, makes the dialing subatomprobe in the range to be efficiently analyzed.
应用电子显微镜和脉冲抛光技术 ,成功控制了晶界在场离子显微镜—原子探针试样中的位置 ,使其处于场离子显微镜—原子探针的有效分析范围内。
Study on the grain-boundary strengthening model of polycrystalline materials;
多晶体材料的晶界强化模型研究
Based on the existing grain-boundary segregation thermodynamics and kinetics, and according to thermodynamics second law, Fick's diffusion laws, and local equilibrium theory, a model is developed to calculate the solute grain- boundary segregation kinetics.
本文在现有晶界偏聚热力学和动力学模型的基础上,根据热力学定律、菲克扩散定律及局部平衡理论,建立起溶质原子晶界偏聚动力学模型。
Some of recent progress were summarized, including the preparation of nanosized powder, highly strengthened ceramic with submicrometer grain structure obtained via spark-plasma sintering method, improved conductivity of grain-boundary via precursor scavenging of two-stage sintering, and a pseudoternary stabilized 5%In2O3-8%Y2O3-ZrO2(all percentages in formula are mole percentage) system.
稳定氧化锆作为固体氧化物燃料电池的电解质是最好的可用材料,介绍了这方面的研究进展,包括:纳米粉的制备,火花等离子体烧结法获得亚微米晶粒结构的高强度陶瓷,二次烧结前体清除法改善晶界的电导率和一个准三元系稳定的5% In2O3-8%Y2O3-ZrO2(式中均为摩尔百分数)。
The effect of grain boundaries on magnetic and transport properties in colossal magnetoresistance particle film;
晶界对庞磁电阻颗粒薄膜的磁学和输运性能的影响
Segregation and interaction of rare earth and iron elements on grain boundaries in ZA27 alloys;
ZA27合金中稀土及铁的晶界偏聚与交互作用
In order to reveal the behaviors of Fe and RE atoms on grain boundaries in ZA27 alloy theoretically, the atomic structure model of high angle grain boundary of α phase in ZA27 alloy was set up by using the concept of coincidence-site lattice(CSL).
为从理论上揭示铁、稀土元素在锌铝合金晶界处的行为本质,建立了ZA27合金中α相大角度重位点阵晶界模型,利用递归法(Recursion)计算了晶界的电子结构(状态密度、费米能级、结构能)。