材料期刊网，材料期刊，材料类期刊，材料期刊投稿

Thick and dense oxide layers were obtained on aluminium in sulphuric acid electrolyte. For this purpose, the methodology of experimental design was used. A three-variables Doehlert design (bath temperature, anodic current density, sulphuric acid concentration), was achieved. In order to maximize the...

关键词: Sulphuric anodization , null , null , null

Wetting phenomena in CuZr-based glassy alloys/W system

Journal of Alloys and Compounds

The wetting behavior and interfaces of CuZr-based glassy alloys/W system were investigated by the sessile drop method. It was found that Cu(50)Zr(50)/W, Cu(47.5)Zr(47.5)Al(5)/W and Cu(40)Zr(44)Al(8)Ag(8)/

关键词: Wettability;Diffusion;Composite;Metallic glasses;bulk metallic glasses;mechanical-properties;matrix composites;compressive plasticity;amorphous-alloys;behavior;tungsten;al;solidification;deformation

TiAl-W-Si合金中的偏析与析出相的分析电子显微术研究

于荣 , 贺连龙 , 程志英 , 朱静 , 叶恒强

金属学报 doi:10.3321/j.issn:0412-1961.2002.z1.140

用高空间分辨分析电子显微术研究了TiAl-W-Si合金中B2相的析出行为和元素W的分布.结果表明,α2/γ相界面台阶由于W

关键词: 分析电子显微术 , TiAl , 析出相 , 偏析

Effect of Co and W additions on the structure and magnetic properties of Nd2Fe14B/alpha-Fe nanocomposite magnets

Journal of Physics D-Applied Physics

The effect of Co addition combined with W on the microstructure and magnetic properties of nanocomposite magnets with composition of (1 - x wt%)Nd8.55Fe84.49W0.60 B-0.636 + x wt% CO, prepared by mechanical alloying, has been investigated....

关键词: nd-fe-b;remanence enhancement;alloys;phase;microstructure;nb

METASTABLE CHARACTERISTICS OF β-W

HUANG Huimin CHEN Xinmin Central South University of Technology , Changsha , China HUANG Huimin Associate Professor , Department of Chemistry , Central South University of Technology , Changsha , China

金属学报(英文版)

The nature of the oxygen contained in β-W was investigated with DSC,X-ray analysis on quenched samples and Auger spectroscope.It was shown that the oxygen contained in nonpyrophoric β-W consists of the reversibly chemisorbed oxygen and th...

关键词: tungsten , null , null , null

A_2W_3O_(12)(A=Y, Er, Ho, Yb)型稀土钨酸盐的高温XRD研究及结构精修

黄远辉 , 杨海涛 , 尚福亮 , 吴国根 , 汪晓

稀有金属材料与工程

用高温固相反应法制备出A_2W_3O_(12) 型稀土钨酸盐材料(A=Y,Er,Ho,Yb),用室温及高温XRD测定其在不同温度下的结构、晶胞参数及晶胞体积,并用TOPSA软件对其结构进行精修.发现除HO_2

关键词: 稀土钨酸盐 , 高温XRD , HO_2W_3O_(12)

Al2O3含量对Al2O3/W复合材料合成的影响

韩兵强 , 李楠

材料科学与工程学报 doi:10.3969/j.issn.1673-2812.2003.06.020

以铝热法为基础制备了Al2O3/W复合材料,探讨了Al2O3含量对复合材料合成的影响.研究表明:主要物相为α-Al2O3、金属W.刚玉含量小于0 3时,温度影响不显著,大于0 ...

关键词: 铝热反应 , 相组成 , 显微结构 , 碳化

Effect of W on structural stability of TiAl intermetallics and the site preference of W

Physical Review B

The effect of W on the structural stability of TiAl intermetallic systems and the site preference of W in B2 and L1(0) TiAl were studied based on first-principles calculations. It was found find that about 15 at. %

关键词: gamma-titanium aluminides;electronic-structure;microstructure;deformation;systems;alloys

Mg掺杂AlInP限制层窗口结构高功率(3.7 W) 660 nm AlGaInP宽面半导体激光器

马德营 , 李佩旭 , 夏伟 , 李树强 , 汤庆敏 , 张新 , 任忠祥 , 徐现刚

人工晶体学报

本文采用低压金属有机化学气相沉积系统(LP-MOCVD)生长出Mg掺杂压应变分别限制多量子阱结构的AlGaInP/GaInP 660 nm LD外延材料,制作出腔长1000 μm、条宽150 μm的宽面半导体激光器.采用选择性Zn扩散在管芯两端面区制作出透明窗口结构来提高器件的腔面光灾变阈值(COD...

关键词: 窗口结构 , Zn扩散 , 热阻 , AlGaInP , 半导体激光器