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Effect of Process Conditions on the Synthesis of TiB2/TiC Nanocomposite Powders by Mechanical Alloying
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Effect of Process Conditions on the Synthesis of TiB2/TiC Nanocomposite Powders by Mechanical Alloying
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Beijing Natural Science Foundation (2101003); National Natural Science Foundation of China (51271007)

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    摘要:

    采用機(jī)械合金化的方法利用工業(yè)純Ti粉和B4C粉末合成了TiB2/TiC 納米復(fù)合粉末。結(jié)果表明，球磨過(guò)程中保護(hù)氣氛的純度對(duì)合金化過(guò)程有著非常重要的影響。在純氬氣保護(hù)的情況下球磨5 h，Ti和B4C粉末發(fā)生了固相反應(yīng)，形成了復(fù)合TiB2/TiC相，隨著球磨時(shí)間增加，合成的TiC相的晶粒尺寸減小至10 nm，而TiB2晶粒尺寸略大；如果球磨過(guò)程中混入空氣，合金化產(chǎn)物中將會(huì)出現(xiàn)大量的TiN和TiO

    Abstract:

    TiB2/TiC nanocomposite powder was synthesized by ball milling the industrial grade Ti powder and B4C powder. The results show that the milling atmosphere plays a crucial role in the synthesis of TiB2/TiC. After 5 h milling under an appropriate argon protection, a solid state reaction between Ti and B4C occurs resulting in the formation of TiB2/TiC phases. With increasing of the milling time, the crystal size of synthesized TiC is decreased to about 10 nm while the crystal size of TiB2 is slightly larger. When the air is introduced in the milling process, a large amount of TiN and TiO will occur in the milled product.

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王海波,王東坡,程方杰,李 輝,栗卓新. Effect of Process Conditions on the Synthesis of TiB2/TiC Nanocomposite Powders by Mechanical Alloying[J].稀有金屬材料與工程,2015,44(12):2987~2991.[Wang Haibo, Wang Dongpo, Cheng Fangjie, Li Hui, Li Zhuoxin. Effect of Process Conditions on the Synthesis of TiB2/TiC Nanocomposite Powders by Mechanical Alloying[J]. Rare Metal Materials and Engineering,2015,44(12):2987~2991.]
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  • 收稿日期:2014-12-25
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  • 在線發(fā)布日期: 2016-08-29
  • 出版日期: 2015-12-25