Abstract:采用以一定比例的ＨＮＯ３和ＨＣｌ为介质，使钨沉淀成钨酸与杂质分离，然后用碳粉吸附杂质再进行光谱测定的方法，对高纯钨（包括金属钨、三氧化钨、钨酸、钨酸铵）中１５个杂质元素Ｆｅ、Ｎｉ、Ｃｕ、Ｍｎ、Ａｌ、Ｖ、Ｃｒ、Ｃｏ、Ｃａ、Ｍｓ、Ｐｂ、Ｓｎ、Ｂｉ、Ｃｄ、Ｂｅ进行了测定，取得了理想的结果，测定下限可达（０．１～０．５）×１０（－６）。

Abstract:ome new application fields of titanium for modernization life, such as titanium products in daily life, titanium-made high-grade fashion dress, fyame of glasses, wrist watch, bicycle, articls for stationery, recretion and sports, medical instruments for clinica and healthy medicine, as well as some Ti products for architecture and antomoble industry, etc. are introduced. Also, some opportunity and the way to deal with for further developing Ti application are discussed.

Abstract:研究了氮分压对空心阴极离子镀氮化钛涂层性能的影响。结果表明：在１．３３×１０（－２）～２．２１×１０（－１）Ｐａ氮分庄范围内，显微硬度随氮分区增加而增加，在２×１０（－２）Ｐａ时显微硬度出现最大值，而后随氮分压的增加，显微硬度下降；随着氮分区增加，氨化钛涂层在Ｈ２ＳＯ４溶液中的抗腐蚀性能增加；氮分压强烈影响ＴｉＮ织构。

Abstract:Research results obtained in recent years concerning the preparation of powders and hydrogen absorbing electrode. the effects of partial substitution and phase transformation in matrix on electrochemical properties were reviewed.

Abstract:n this paper, the bond-parateric function and the size-factor X2=R0 proposed by Zhang Bangwei et al. are used to study the solid solubilities on the binary transition metals based alloys.1587 binary alloys are studied and it has been found that the soluble elements and insoluble elements can be separated by a parabola and ellipse two regularities are up to 86. 6 % and 90 %, respectively. Also, the parameters a,b, of parabola and parameters m, n, c and d of ellipse are disscused and it has been found that these parameters are proportional to the suitable parameters of each host metal well.

Abstract:he possible interior strengthening mechanisms related to 2091 Aluminium-Lithium alloy are discussed in detail in the present paper, and the analycal solutions of these mechanisms for the alloy strength are converted out. The reason why 2091 alloy has the higher ductility and mechanical properties than other kinds of Al-Li alloys is given in some extent of detail. Some basic methods improving the synthetical mechanical properties are also introduced.

Abstract:-7Ni-3Fe heavy alloy was prepared from the tungsten powders doped with different amounts of trace silicon. The behavior of trace silicon in the tungsten heavy alloy was investigated by using scanning electron microscope GEM) and X-ray photoelectron spectrom etry (XPS). The results showed that part of the trace silicon in the form of dispersed SiO2 particles was distributed in the binder phase of the alloy and the remaining in the state of elemental silicon was distributed in the tungsten grains forming a solid solution. It was found that the tungsten grains in the alloys prepared from undoped tungsten powders were covered by a thin layer of WO2 but no WO2 was detected in the alloys prepareds from doped tungsten powders. The mechanism of the formation and elim mation of WO2 was discussed.

Abstract:he rare-earth magnetic alloys of YTi(Fe(1-x)Cox)(11) system (x=0.0, 0. 15, 0.25, and 0.5) have been prepared and the optimal reaction condition has been worked out by using the method of coprecipitation-reduction diffusion.By studing the crystal structure with XRD and testing the Curie temperature and magnetization on the VSM of model M 155, it is shown that all the YTi(Fe(1-x)Cox)(11) system alloys has the crystal structure of ThMn12 type,the lattice parameters decrease and the Curie temperature increases with the Co addition amount increasing, the reduced saturated magnetization has a maximum at x=0. 15.

Abstract:he effects of two kinds of rare earth elements La and Yon the size as well as the morphology of tungsten particles during hydrogenolysis were investigated by using SEM, X-ray difftaction and IP(Instrument-determination of powder and porous-material). The results indicated that in tungsten powders, the La and Y exist in the forms of oxides(La2O3, Y2O3) and tungstates (La2W2O9, Y6WO(12)) and the most of tungsten powders are regular polyhedrons. The existence of La and Y hinders drastically the growth of tungsten particles during hydrogenolysis of blue W oxide, and the effect of Y is greater than that of La.

Abstract:研究了Ｗ对Ｆｅ－Ｓｉ－Ｂ非晶合金交流磁性的影响。讨论了磁导率随频率及磁感应强度的变化规律。分别在弱磁场及中、强磁场区域对３种合金Ｆｅ（８２．１）Ｓｉ（２．２）Ｂ（１５．７）（１＃）、Ｆｅ（７９．８）Ｓｉ（２．５）Ｂ（１７．７）（２＃）和Ｆｅ（７３．７）Ｗ（１．３）Ｓｉ（３．０）Ｂ（２２．０）（３＃）进行了磁损耗分离。结果表明，加入Ｗ，使磁谱曲线的下降幅度增加；磁导率随磁场变化的峰值增大，出现峰值的磁场稍移向高场区；在中、强磁场区域，磁损耗分离曲线为一折线，转折点对应的频率ｆ约为２０ｋＨｚ。

Abstract:The Sm2Fe(17)Nx compound shows the intrinsic magnetism either comparable with or superior to those of Nd2Fe(14)B compound. The Processing methods for Sm2Fe(17)Nx powders and magnets were mainly discusseed in this paper. The future development of Sm2Fe(17)Nx magnet has been estimated.

Abstract:在Ｈｅ气保护下采用ＰＲＥＰ工艺制取Ｔｉ－４８Ａｌ－１Ｖ（ａｔ％）合金粉末，观察粉末表面冷凝组织特性，估算冷却速率（Ｖｃ）和冷凝速率（Ｖｓ），并对其影响因素进行了分析讨论。结果表明，Ｖｃ值达到１０４～１０６Ｋ／ｓ，比在Ａｒ气气氛中的Ｖｃ值高。Ｖｓ值处在１．３１～１０．５７ｃｍ／ｓ范围。二次树枝晶臂间距（Ｓ）和初始β晶粒度（ｄ）随Ｖｃ变化规律分别服从幂函数Ｓ＝３４．２１　和ｄ＝７２３　。当粉末颗粒较大，Ｖｃ值较低时，结晶是完整树枝状，而当粉末颗粒较小，Ｖｃ值较高时，结晶呈胞状。这些结果表明，在Ｈｅ气保护下的Ｐ