Test is made on olivine LiFePO_4 anode material for lithium-ion battery.LiFePO_4 and carbon-doped LiFePO_4 were prepared by solid-phase synthesization. Test results showed that carbon-doped LiFePO_4 had good electrochemical performance.Discharging at 0.1 C rate,the initial discharge capacity was 130 mA·h/g with little capacity decrease after 10 circles at room temperature.

ATO nanometer powder was prepared respectively by ultrasonic hydrolysis and conventional electromagnetic agitation hydrolysis.The powder was tested with XRD,SEM,TEM and the resistivity of powder was measured.Comparison is made between the aggregation factor of the nanometer powders prepared by the said two methods and the mechanism of agglomerate phenomena was discussed.The results showed that ultrasonic can inhibit the aggregation of ATO nanometer powder prepared by alkoxide hydrolysis,whose resistivity is slightly higher than that prepared by conventional electromagnetic agitation hydrolysis.

Indium tin oxide (ITO) conductive and transparent film is prepared on quartz glass matrix from In(NO_3) and acetylacetone by sol-gel dip-coating technique with anhydrous SnCl_4 as the dopant.The phase transformation process,the surface structure,the microscopic morphology and physical properties of the film were measured and analyzed by XRD,SED,IR,4-probe method and UV-VIS spectrometer.The experimental results showed that it is absolutely feasible to fabricate ITO film on the quartz matrix by sol-gel technique,and the ITO film has the micro-structure accumulated by several particles and ITO film has the cubic bixbyite crystal structure,and[111] is its preferred orientation.The thickness of ITO film was below 150nm upon five times dip-coating ,the square-wave resistance of the film is about 110 Ω with resistivity about 1.65×10^-2 Ω·cm and>90% transmittancy.

Experiment is done on the acid hydrolysis of titanium-columbite-tantalite ore difficult to decompose.Based on the existing tantalum and niobium acid hydrolysis, the decomposition rate of Ta_2O_5 and Nb_2O_5 is increased from (72.3)% and 73.6% up to>97% with satisfactory results with smaller powder particle size,more acid consumption and longer heat insulation time,etc.

Commercial-scale test is made on Ti slag smelting from Panzhihua Ti ore and Yunnan Ti ore with open-top electric furnace.The results showed that slag and iron are effectively separated and qualified Ti slag is obtained with Ti assaying respectively 79%, 82% and 74% from mixed ore,Yunnan Ti ore and Panzhihua Ti ore.Analysis is made of the feature and parameters of Ti slag smelting with open-top electric furnace.

In the paper is reviewed the study of strength and structure of WC-Co hard alloyIt indicated that WC-Co hard alloy is characteristic of particle compound reinforcing material,based on which investigationis are made into the mi crostructure and preparation technology of the said alloy.

Brief description is made of the development and application of several processes for improvement of W ion-exchange technology by Ganzhou Huaxing Tungsten Products Company Ltd,including the new process of scheelite alkali decomposition,slurry alkali recovery,ion-exchange series-column absorption,Mo removal process,APT crystal parent solution recovery,ammonia recovery from evaporated crystal off-gas.The application of the said new technologies or measures has resulted in operating cost reduction by RMB$1000/t APT.Some suggestions are put forward for future technical development.

The paper reviews the latest development of one-dimensional nanometer structures.Description is made of the preparation of one-dimensional nanometer structures such asnanotubes,nanorods,nanowires and nanobands by chemical vapor deposition,thermal decomposition precursor,formwork synthesis and arc plasma synthesis,etc.The author has summarized its characterization,the growth mechanism and the applications in the fields of physics,chemistry,mechanics,material science.Brief description is made of the preparation of WS_2 nanofibers by thermal decomposition.

The latest development of the synthesis technique of boron carbide powder,species of boron carbide diphase ceramics are primarily introduced and the development direction is also forecast in this paper.

Based on the review of development of W smelting technology,comparison is made between several currently applicable major processes.The trend of new technology development for tungsten smelting is expected.