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氧化鎢的形貌結(jié)構(gòu)對(duì)納米WC粉末均勻性的影響
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國(guó)家自然科學(xué)基金 (50801037, 51071082, 51271090)；教育部博士學(xué)科點(diǎn)專項(xiàng)基金 (20103601110001)；教育部長(zhǎng)江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃 (IRT0730)；教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃 (NCET-10-0184)；南昌硬質(zhì)合金有限責(zé)任公司校企合作項(xiàng)目


Effect of the Morphology Structure of Tungsten Oxide Powder on the Homogeneity of Nanometer Tungsten Carbide Powder
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    摘要:

    研究了在傳統(tǒng)氫還原工藝制備納米碳化鎢粉末過程中不同氧化鎢的形貌結(jié)構(gòu)對(duì)納米W/WC粉末均勻性的影響，并對(duì)粉末及其WC-Co燒結(jié)體的性能進(jìn)行了表征。結(jié)果表明，用具有疏松、多孔形貌結(jié)構(gòu)的細(xì)小氧化鎢顆粒更容易制備出結(jié)構(gòu)較疏松、分散性較好的納米W粉和WC粉。晶粒聚集和異常粗大顆粒的產(chǎn)生，主要與碳化過程中團(tuán)聚納米鎢粉顆粒因燒結(jié)合并增粗有關(guān)

    Abstract:

    The effect of the morphology structure of tungsten oxide powders on the homogeneity of nanometer W/WC powder was studied during a conventional hydrogen reduction process. The properties of tungsten carbide powder and sintered WC-Co composites were characterized. It is shown that homogenous nanometer tungsten and tungsten carbide powders with loose and porous morphology structure can be prepared from fine tungsten oxide with loose and porous morphology structure. The grain aggregation and abnormal coarse grain are mainly due to the burning binding of agglomeration particle of nano tungsten powder during carbonization process

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唐建成,雷純鵬,劉 剛,吳愛華.氧化鎢的形貌結(jié)構(gòu)對(duì)納米WC粉末均勻性的影響[J].稀有金屬材料與工程,2014,43(5):1229~1333.[Tang Jiancheng, Lei Chunpeng, Liu Gang, Wu Aihua. Effect of the Morphology Structure of Tungsten Oxide Powder on the Homogeneity of Nanometer Tungsten Carbide Powder[J]. Rare Metal Materials and Engineering,2014,43(5):1229~1333.]
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  • 收稿日期:2013-05-30
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  • 在線發(fā)布日期: 2014-10-13
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