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检索条件:作者= Tingquan LEI  

  • 论文(8)

Variations of Microstructure and Mechanical Properties of Si-B-O-N Ceramics with Sintering Temperatures

Junbao ZHANG , Guangwu WEN , Tingquan LEI , Dechang JIA , Jiancun RAO

材料科学技术(英文)

Si-B-O-N powder without B-O bonds synthesized by polymeric precursor were hot-pressed into ceramics at different temperatures. The variations of microstructure and mechanical properties of Si-B-O-N ceramics have been investigated. Crystallization of Si-B-O-N ceramics occurred at about 1400°C. Densit...

关键词: Si-B-O-N ceramics , null , null , null

Internal Oxidation of Cu-Al Alloy

Jianjun WU , Yun ZHANG , Yutian SHEN , Guobin LI , Tingquan LEI

材料科学技术(英文)

The thermodynamics and kinetics of the internal oxidation in dilute Cu-Al alloy are investigated. The internal oxidation of copper alloy containing 0.2-1.2 wt pct Al is studied in the temperature range from 1073 K to 1273 K. A related equilibrium diagram is drawn. A mathematic model of oxidation lay...

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High Temperature Tensile Properties of 30 vol. Pct ZrCp/W Composite

Yujin WANG , Yu ZHOU , Guiming SONG , Tingquan LEI

材料科学技术(英文)

In order to improve the high temperature strength of tungsten, 30~vol. pct ZrC particles were added to the tungsten matrix to form a 30ZrCp/W composite. The tensile properties from 20℃ to 1880℃ of the composite were examined. It was shown that with increasing testing temperature, the nonlinearity of...

关键词: ZrCp/W composite , null , null , null

Synthesis and Ceramic Conversion of Polysiloxazane to Silicon Oxynitride

Junbao ZHANG , Tingquan LEI , Guangwu WEN , Yu ZHOU

材料科学技术(英文)

Amorphous silicon oxynitride powders have been obtained by pyrolysis of polysiloxazane in a stream of anhydrous NH3 at the temperature up to 1000℃. The polysiloxazane is fabricated from ammonolysis of chloropolysiloxane that is produced by the hydrolysis of silicon tetrachloride. The conversion of p...

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Elevated Temperature Strength of TiCp/W Composites

Yujin WANG , Yu ZHOU , Guiming SONG , Tingquan LEI

材料科学技术(英文)

The elevated temperature mechanical properties of TiCp/W composites produced using powder metallurgical technique were investigated. Results show that with increasing temperature, the strength of TiCp/W composites increases gradually and reaches its maximum value at 1000℃, which is much higher than ...

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Microstructure and Performance of 2Y-PSZ/TRIP Steel Composites

Yingkui GUO , Yu ZHOU , Dongbo LI , Xiaoming DUAN , Tingquan LEI

材料科学技术(英文)

2Y-PSZ/TRIP steel composites have been sintered by hot-pressing method. Their microstructure and mechanical properties were investigated by means of SEM, TEM, XRD and static tension, split Hopkinson pressure bar method. The results showed that the strength and elastic modulus of 2Y-PSZ/TRIP steel co...

关键词: 2Y-PSZ/TRIP steel composites , null

Preparation and characterization of BAS reinforced with SiC platelets

Jiancun RAO , Jiancheng GU , Yu ZHOU , Feng YE , Tingquan LEI

材料科学技术(英文)

BAS glass-ceramic powders were prepared by sol-gel processing. SiC platelets reinforced BAS glass-ceramic matrix composites with high density and uniform microstructure could be made using hot-pressing method. The related processing parameters were studied in this work, including effects of addition...

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High temperature deformation of Al2O3/Cu composites

Jianjun WU. Yun ZHANG , Yanfei JIANG , Meiyun XUE , Tingquan LEI

材料科学技术(英文)

This work concerns with the high temperature deformation of internally oxidized Al2O3/Cu composites. The investigation revealed that dispersive alumina can obstruct dislocation sliding and define the subgrain size thereby improve significantly the strength of the materials at high temperature. The s...

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