材料期刊网

EFFECT OF HYDROGEN ON DEBYE TEMPERATURE AND LATTICE PARAMETER OF Ti-30Mo ALLOY

YU Bingxi GAO Shujun Institute of Metal Research , Academia Sinica , Shenyang , China

金属学报(英文版)

The variations of Debye temperature and lattice parameter of Ti-30Mo alloy with different hydrogen contents were measured by means of X-ray diffraction.It was found that as the hydrogen content increases,the Debye temperature decreases,but the lattice parameter of the aUoy increases.The above result...

关键词: Debye temperature , null , null , null

Theoretical study of the elastic properties of titanium nitride

Dong CHEN , Jingdong CHEN , Yinglu ZHAO , Benhai YU , Chunlei WANG , Deheng SHI

金属学报(英文版) doi:10.1016/S1006-7191(08)60082-4

The equilibrium lattice parameter, relative volume V/V₀, elastic constants C_ij, and bulk modulus of titanium nitride are successfully obtained using the ab~initio plane-wave pseudopotential (PW-PP) method within the framework of density funct...

关键词: Elastic constants , null , null , null

X-Ray and Neutron Diffraction Studies on Thermal Parameters of Thalous Bromide

J.Bashir , R.T.A.Khan , T.Ikeda , Kenichi Ohshima

材料科学技术（英文）

Thermal parameters of TlBr were determined using both X-ray and neutron diffraction techniques. The data was analysed by Rietveld profile refinement procedure. From the neutron diffraction data, due to weak odd-order reflections, it was not possible to determine the individual thermal parameters. Th...

关键词: Thallium bromide , null , null , null

Thermomechanical Analysis of （Cu0.5Tl0.5）-1223 Substituted by Pr and La

材料科学技术（英文）

关键词: 热机械分析 , 扫描电子显微镜 , 线性热膨胀系数 , 超导转变温度 , 温度范围 , 数据计算 , X射线衍射 , 1223相

氢对Ti合金的Debye温度和晶格常数的影响

虞炳西 , 高树浚

金属学报

使用X射线衍射仪测定出不同氢含量的Ti-30Mo合金的Debye特征温度值以及晶格常数的变化,结果表明随着氢含量的增加,Debye特征温度相应地减小而晶格常数增加,证实了氢含量的增加会导致金属原子间键合力的减弱,从而造成金属脆化。

关键词: Debye温度 , lattice parameter , lattice decohesion theory , Ti alloy

Mg2Si弹性性质及热力学性质的第一性原理计算

刘娜娜 , 孙翰英 , 刘洪生

材料导报

采用基于第一性原理的赝势平面波方法系统地计算了Mg2Si弹性性质和热力学性质.根据计算数据得出Mg2Si在不同压强下的弹性常数,得出相对晶格常数(α/α0)、相对体积(V/V0)、体弹性模量与压强和温度的关系.通过准谐德拜模型计算了Mg2Si的热力学性质,如比热容和德拜温度,计算出的德拜温度与实验值...

关键词: 第一性原理 , 热力学状态方程 , 比热容 , 德拜温度