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Chin J Mater Res  2009, Vol. 23 Issue (2): 113-117    DOI:
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Fabrication and characterization of ultra-fine grained pure tungsten by two fast resistance sintering technologies
ZHOU Zhangjian;  DU Juan;  MA Yao
School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083
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ZHOU Zhangjian DU Juan MA Yao. Fabrication and characterization of ultra-fine grained pure tungsten by two fast resistance sintering technologies. Chin J Mater Res, 2009, 23(2): 113-117.

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Abstract  

Pure tungsten with ultra-fine grain size has been fabricated by a novel sintering method combined resistance sintering with ultra high pressure in the absence of any additives. The relative density of the fabricated material is 97.9% and the average grain size is less than 1 μm. the density of the sintered sample is mainly contributed by the applied ultra high pressure, while the resistance sintering benefit for high mechanical properties of the sintered material. Compared to another fast resistance sintering technology spark plasma sintering, resistance sintering under ultra high pressure shows the advantage of not only retaining the fine grain size, but also further refining the grain size during consolidation.
Key words:  metallic materials      tungsten      ultra fine grain      resistance sintering      ultra high pressure     
Received:  22 October 2008     
ZTFLH: 

TG146

  
Fund: 

Supported by National Nature Science Foundation of China No.50634060 and the National Basic Research Program of China under grant No.2007ID102.
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ZHOU Zhang-Jian
DU Juan
MA Yao

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https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2009/V23/I2/113

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