Analysis is made on the thermal decomposition of CoC2O4 · 2H2O in the argon gas by TG-DSC and laser granulometer. The results showed that the thermal decomposition was done in two stages. First, the crystal water in CoC2O4 · 2H2O was lost at 150～275 ℃. Then,CoC2O4 was pyrolyzed into cobalt pow- der at 300～450℃. At 328.0～347.7℃ ,the biggest particle size change is found in the product,while at 347.7～500℃ ,the product particle size change is less. And between room temperature and 226.2 ℃ ,and at 226.2～328.0℃ ,the particle size change is not obvious. Therefore, the thermal decomposition condition of CoC2O4 · 2H2O in the argon gas can be controlled in stages in order to prepare cobalt powder of different particle sizes.

Spherical MnCO3 powder of uniform particle size was prepared by liquid phase precipitation using MnSO4 as the manganese source and NH4 HCOa as the precipitating agent and sodium hexametaphosphate （SHMP） as the dispersant. In the paper,the impact of three primary parameters such as reaction temperature,reactant concentration and dosage rate of SHMP on the particle size of MnCO3 powder was investigated and the experimental results were charaeterized by the laser granulometer, scanning electron microscopy and X-ray diffraction. The results showed that at 10～50℃ ,the particle size of MnCOa decreased with the decrease of reaction temperature. However,too low reaction temperature results in serious agglomeration. The SHMP dosage rate η affects the particle size of MnCOa powder to a great extent and the size decreases gradually with the increase of dosage rate when dosage rate is η〈10%. The MnCO3 spherical particles of uniform size （～3.1μm） and excellent dispersibility were obtained under following processing parameters： reaction temperature up to 30℃,the ratio of [Mn2＋]/[HCO3-] up to 5 ： 1 and the dosage rate of SHMP up to 7 0/4o.

LaB6 is prepared by teraboron carbide reduction. In order through chemical treatment before used to reduce La20a, followed by to obtain LaB6 powder containing Fe 0.01% and C 0.02 %. The yield to improve LaB6 purity, B4C goes pickling and distilled water washing of LaB6 is up to 79.5%

Description is made of the basic principle and process of the molten-salt electro-deoxidation for the preparation of refractory metals and alloys, the advantages and difficulties of the molten-salt electro-deoxidation are analyzed. The latest development of preparation of refractory metals and alloys by molten-salt electro-deoxidation is reviewed. The future development and prospect of the popularization,application and large-scale industrialization of the said process are discussed.

中铝国际长沙有色冶金设计研究院有限公司自主研发的富氧侧吹熔池熔炼技术，于2011年11月荣获国家知识产权局第五届中国专利年会创新奖，这也是该公司在自主知识产权方面取得的新成果。

由中南大学李洪桂教授、江西理工大学羊建高教授等编著的《钨冶金学》已由中南大学出版社出版。此书为国家出版基金项目“有色金属理论与技术前沿丛书”之一，内容限于钨的提取冶金领域（包括以提取冶金的原理和方法制取特种钨制品及钨基合金的前驱体），而对钨资源、钨化合物的性质等内容仅结合提取冶金过程的需要进行介绍；重点介绍近二十年来钨冶金领域基础理论研究和技术研发的新成果，在较全面收集近代有关文献资料和某些生产实践资料的基础上进行去粗取精、归纳提升，对前人已做全面介绍的内容则在不破坏其系统性的原则下尽量简化或删除。作者在著作过程中阅读了大量国内外文献（包括大量俄文文献）加以消化吸收，并与自己的研究实践结合著成此书。

Analysis is made of the basic mechanics about efficacy loss of the electrode, such as pulverization of alloy particle, oxidation of element, amorphous after hydrogen absorption and crystalline after hydrogen desorption,and electrochemical corrosion. The latest research is reviewed. The way how to restrain or lower capacity degradation of electrode and improve cyclic property of hydrogen storage alloy electrode is introduced.

Porous titanium compacts were prepared by gelatining solidification and vacuum sintering techThe influence of monomer concentration on gelatining solidification,microstructure and properties of sintered compact of porous titanium were analyzed by scanning electron microscope （SEM）, differential scanning calorimeter （DSC） and mechanical testing machine. The results showed that the role of dispersant citrate ammonium was apparent when the pH values of slurry were in the range from 7 to 9. When the monomer content,the added volume for the initiator and the ammonium are 20% 6mmol/L and 0.1 mL, respectively,the gelatin time is 68 rain at 45℃ reaction temperature. The bending strength of green compact with the monomer content of 15%,29% and 25% are about 15.2 MPa,20.6 MPa and 24.1 MPa,respectively. The green compact is sintered at 1 100℃ for 2 h,and the open-porosity ofsintered porous tita- nium is 39.5%.

Al0.5CoCrFeNiBx （x values in molar radio, x= 0,0.1,0. 2,0. 25,0. 3） high-entropy alloys were prepared by vacuum arc melting. The effect of B content on microstructures and mechanical properties of Al0.5 CoCrFeNiBx high-entropy alloys were investigated by XRD, SEM and mechanical properties test. The results show that the alloys exhibit simple FCC and BCC solid solution phases. Microstructure of Al0.5 CoCrFeNi alloys is typical dentrite, refined when B is added. And with the addition of B element, needle-like fl phase and island al phase appear in interdendrite where B element is enriched. As the B content increases, the tensile strength of alloys increases, but the ductility decreases.

TZM alloys were prepared by powder metallurgy,and their microstructure were observed by SEM and EDS. Based on the analysis results,the three strengthening mechanisms of TZM alloys are analysed, such as solid solution strengthening ,dispersion strengthening and deformation strengthening