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- Keywords Manganite oxide polycrystalline;Transport properties;Grain boundary effect;Double exchange; 锰氧化物多晶材料;输运性质;晶界效应;双交换作用;
- grain boundary effect 晶界效应
- Keywords Perovskite manganite;Extrinsic magnetoresistance effect;Low-field magnetoresistance （LFMR） effect;Anisotropic magnetoresistance effect （AMR）;Grain boundary effect;Electroless process; 锰基钙钛矿氧化物;非本征磁电阻效应;低场磁电阻效应;各向异性磁电阻;边界效应;化学镀;
- The grain boundary secondary phase is an imporrant microstructure component in AIN ceram-ics,having significant effect on thermal conductivity. 晶界第二相是AIN陶瓷显微结构的重要组成部分，对AIN陶瓷的热导率有重大的影响。
- The effect of grain boundary structure on secondary working embrittlement (SWE) of IF steels was studied by electron back-scatter diffraction (EBSD) and TEM. 采用电子背散射衍射(EBSD)技术和TEM技术对IF钢二次加工脆性与晶界结构之间的关系进行了研究。
- In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grain boundary sliding proceeds easily. 合金在超塑变形中，位错滑移起重要协调作用，使晶界滑动易于进行。
- The deformation mechanism of AZ91D superplasticity is grain boundary sliding. 挤压态AZ91D镁合金超塑性变形的主要机制为晶界滑移机制。
- The effect of anisotropy of grain boundary energy on the kinetic of grain growth is simulated by phase field method,in which a time-dependent misorientation in grain boundary is introduced. 引入与时间有关的取向错配场变量,模拟了晶界能各向异性条件下晶粒长大的演化行为。模拟结果表明,与晶界能各向同性系统相比,随演化时间的延长,晶界能各向异性延迟晶粒的生长,使得晶粒的平均面积呈非线性变化;
- Impurities tend to segregate at grain boundaries. 杂质常常在晶粒间界偏析。
- And the energies of interdiffusion and grain boundary diffusion have been figured out by the Arrhenius equation. 从Arrhenius方程得出互扩散及晶界扩散激活能。
- The high life LCF cracks of DZ4 superalloy favorably initiate at the transverse segment of longitudinal grain boundary. 定向凝固DZ4合金高寿命低周疲劳裂纹易于萌生于试样内部或亚表面的柱状晶界.
- In the late stage of the deformation, with the grain size growing up, the grain boundary can emit partial dislocations. 在晶界处及附近有台阶界面结构， 以及与台阶形状相对应的应力场衬度。
- In addition, a grain boundary is formed at the coalescence boundary of neighboring growth fronts. 在相邻生长前沿所形成的合并界面处形成晶界;
- The explicit formula for the line-integrated emissivity with taking into account the plasma boundary effect is presented. 本文给出了这种情况下的线积分辐射率明晰表达式。
- Photomicrograph of alloy overheating showes fraction grain boundary coarsening and melt-back delta at first. 其过烧特征最初表现为晶界局部加宽和复熔三角形的出现。
- Two area defects are twins and grain boundaries. 有两种面积缺陷,即孪生和晶粒间界。
- As the continuous chain distribution in grain boundary of T6 state,fracture toughness and stress crossion resistance are low. T6工艺晶界为链状连续分布，断裂韧性和抗应力腐蚀性能较差；
- Critical flow pressure reflects the impact of capillary pressure and boundary effect and gas percolation, and causes non-Darcy gas flaw. 临界流动压力反映了毛细管力与边界层作用对气体渗流的影响，并使气体表现出非达西渗流特征。
- The element content at grain boundary of advanced Fe-based superalloy GH871 containing Nb has been studied by Perkin-Elmer PHI 595 Auger spectrometer. 利用PERKIN ELMERPHI 5 95型俄歇谱仪研究了新型含铌铁基高温合金GH871的晶界上各元素的含量。
- BN interwoven microstructure will prevent grain boundary slip and reduce the attenuation rate of high temperature strength. 氮化硼的编织状结构可阻碍晶界的滑移，降低材料高温强度的衰减率。
