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液氮球磨過程中鈦粉的形貌和組織演變
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Morphology and Microstructure Evolution of Ti Powder during Cryomilling
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    采用液氮球磨技術(shù)制備出納米晶鈦粉。運用SEM、XRD和TEM研究了液氮球磨過程中鈦粉的形貌和組織的演變。結(jié)果表明：鈦粉顆粒在液氮球磨過程中以脆性開裂的方式細(xì)化，經(jīng)8 h液氮球磨后鈦粉顆粒從球磨前的45 μm減小到5 μm左右，顆粒表面出現(xiàn)大量裂紋；采用液氮球磨方法制備納米晶Ti粉僅需8 h。

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    Nanocrystalline Ti powder was prepared using cryogenic mechanical milling. The evolution of morphologies and structures for Ti powder during cryomilling were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The experimental results show that the particle sizes decrease from original 45 mm to 5 mm after 8 h cryomilling. Embrittlement cracking is the dominating way of the refinement for Ti particles. The time required for preparing nanocrystalline Ti powder by cryomilling technique is only 8 h.

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陳漢賓,吳護(hù)林,張隆平,賈代金,楊 濱.液氮球磨過程中鈦粉的形貌和組織演變[J].稀有金屬材料與工程,2012,41(7):1255~1258.[Chen Hanbin, Wu Hulin, Zhang Longping, Jia Daijin, Yang Bin. Morphology and Microstructure Evolution of Ti Powder during Cryomilling[J]. Rare Metal Materials and Engineering,2012,41(7):1255~1258.]
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  • 收稿日期:2011-07-23
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