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Grain Growth Kinetics and Debye Temperature of Nanometer TiO_2 Powders Prepared by a Sol-gel Process

Ju LUO , Xingzhao DING , Benpei CHEN and Jie KONG(Institute of Solid State Physics , Academia Sinica , Hefei , 230031 , China)Yuanda DONG(Dept. of Metallurgy and Materials , Shanghai University of Technology , Shanghai , 200072 , China)

材料科学技术（英文）

The development of microstructure of nanometer TiO2 powders prepared by a sol-gel process was systematically studied. Grain growth was mon itored using X-ray diffraction (XRD) and transmission electron microscopy (TEM). and the Debye temperature of anatase crystallites was determined. It was found t...

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Mossbauer Spectroscopic Studies on a Supersaturated Solid Solution of Fe-Cu Formed by Mechanical Alloying

Yuanzheng YANG and Xueming MA (Institute of Solid State Physics , Academia Sinica , Hefei , 230031 , China)(To whom correspondence should be addressed)Yuanda DONG(Dept. of Metallurgy arid Materials , Shanghai University of Technology , Shanghai , 200072 , China)

材料科学技术（英文）

Mechanical alloying (MA) was employed to produce supersaturated solid solutions of Fe1-xCux,which is virtually immiscible under an equilibrium condition at ambjent temperature. The X-ray diffraction results show that the solutions formed in the concentration ranges of x≤0.1 5 and x≥0.40 are of bcc s...

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Structural Characteristics of Rapidly Quenched Al-Si Alloys

Lin LIU(Institute of Solid State Physics , Academia Sinica , Hefei , 230031 , China)Yuanda DONG(Dept. of Metallurgy and Materials , Shanghai University of Technology , Shanghai , 200072 , China)

材料科学技术（英文）

The structure of rapldly quenched Al-Si alloys (1 and 4 wt-%Si) was systematically studied by optical and transmission electron microscopy (TEM ) as welI as X-ray djffractjon (XRD). ExperimentaIresults show that rapid solidification refines the grain size. extends the solid solubility of Si in Al an...

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Environmental Embrittlement in A_3B-type Intermetallic Alloys

Xiaojing WAN , Jiahong ZHU , Kailiang JING , Weijie CHEN and Yue WU(Institute of Metallurgy and Materials Science , Shanghai University of Technology , Shanghai , 200072 , China)

材料科学技术（英文）

Environmental embrittlement in A3B-type intermetallics based on Ni3Al and Fe3Al has been studied in this paper. For the Ni3Al doped with 120 wt ppm B and Ni,(Al,Cr.Zr) doped with 80 wt ppm B,their elongation and ultimate tensile strength decreased in the sequence:of vacuum > air >hydrogen. whi...

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Sputtering Rates of Alloys in Glow Discharge

Jianshi REN and Gongshu ZHANG (Institute of Metal Research , Chinese Academy of Science , Shenyang , 110015 , China)Zhenshu WANG and Jinwei ZHAO (Shanghai University of Technology Shanghai , 200072 , China)

材料科学技术（英文）

The sputtering rates of alloys were investigated under constant Ar pressure and voltage supplied.The alloys studied in this work range from binary intermetallic alloys to ternary and quaternary alloys. It is revealed that the sputtering rates of alloy targets under steady states are where q is the s...

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