Based on TZC material for PIM Mo ejector,study and on the site tests were made in respect of the high temperature strength and hardness and microscopic structures of the TZC alloy with the addition of single RE cerium and also Ce Yt RE element.The results showed that the addition of Ce in the alloy can greatly improve the alloy hardness while addition of Yt can greatly improve the alloy high temperature strength.The addition of both Ce amd Yt at the same time will result in compound intensifying effect with much larger high temperature strength and hardness,allowing for～25%more ST billet through capacity

The effects of cobalt on the drawing and proccessing hardening of molybdenum wire were studied.The microstructure and mechanical properties of annealed molybdenum wire with or without cobalt addition were observed and analyzed.The results show that cobalt addition increases processing hardness and decreases recrystallization temperature by about 100℃.Furthermore,the doping of cobalt greatly benefits the ductility of molybdenum.Mo Co wire is really an attractive alloy.

Study is made of recovery of organic reagents during the preparation of ultrafine powder by metal alcoxides hydrolysis.The Phase diagrams of isopropanol benzene system and isopropanol benzene water system have been plotted,based on which,isopropanol and benzene can be recovered and recirculated by distillation rectification process.The recovery and reused rate of alcohol and benzene are above 75%.So both the environmental pollution and cost of ultrfine powder are reduced.

In this paper,description is made of the major applications,present development and market of niobium and its products.Discussion is made on its technical progress.

The new labouring organization and structure are quite necessary for the stateowned enterprises to be adapted to the market economy.Analysis is made of the labouring organizations of the state owned enterprises.

Cemented carbide sprayed powder is a new hard material,mainly used for high temperature resistant and wear resistant parts in various motors,shafts ,large fan vanes and seal rings,etc,with extremely strict requirement for its physical properties.The paper describes the study of influence of sintering temperature and other processing technologies on the physical properties of the cemented carbide sprayed powder.The results showed that the use of the new technology can assure the physical properties of the cemented carbide sprayed powder up to the foreign clients requirement.

Study is made of the mechanism of carbon impurity in the Nd metal during the production of metal Nd by molen salt electrolysis.The main technological factors determing the carbon content in the Nd metal product are described.

The method and step of the linear and polynomial regression of the experimental data using Microcal Origin 5.0 software are described with illustration.

WC powder is an important raw material for production of cemented carbide.Cemented carbide from nano structured WC powder has excellent characteristics.In this paper,recent development and application of nano structured WC powder are described and the existing problems are discussed.

According to the property of LiCoO 2 in Li-ion secondary battery anode wastes of Al Co film,dissolution reaction of LiCoO 2 in a system of H 2SO 4 and H 2O 2 was put forward: 2LiCoO 2+3H 2SO 4+H 2O 2→Li 2SO 4+2CoSO 4+4H 2O+O 2↑ A simple process for recycling cobalt and aluminum was determined,including alkali leaching of wastes,acid dissolution of slag,purification of cobalt containing solution and precipitation of cobalt.The recovery of cobalt reaches 95.75%.Aluminum in alkali leaching solution was neutralized with H 2SO 4 and the product Al(OH) 3with a chemical purity was obtained,the recycling rate is 94.84%.The profit of 45600.6 RMB Yuan can be obtained in treating l ton waste by the technology.