Formation of titanium nitrides via wet reaction ball milling
Formation of titanium nitrides via wet reaction ball milling
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DOI：
10.1016/s0925-8388(00)00822-7
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发表时间：
2000-07
影响因子：
6.2
通讯作者：
F. Zhang;W. Kaczmarek;Li Lu;M. Lai
中科院分区：
文献类型：
--
作者：
F. Zhang;W. Kaczmarek;Li Lu;M. Lai
本文提出了一种新的机械化学合成TiN的方法，即在苯溶液中，将单质钛粉与有机化合物吡嗪球磨336 h。通过X射线衍射法检查研磨粉末的结构。在研磨过程中直接形成氮化钛。与干球磨工艺不同，本发明的湿磨导致中间体氮化钛Ti2N的形成，这在先前使用干磨的研究中从未发现。随着研磨时间的增加，观察到Ti2N逐渐转变为化学计量化合物TiN。在加热时，在研磨过程中形成的Ti2N完全转化为TiN。讨论了固液反应的内在机理。
A new mechanochemical route to synthesize TiN has been developed by ball milling elemental titanium powders with the organic compound pyrazine in a benzene solution for periods of up to 336 h. The structures of the milled powders were examined by means of X-ray diffractometry. Titanium nitrides were formed directly during the milling. Unlike the dry ball-milling process, the present wet milling resulted in the formation of an intermediate titanium nitride Ti2N which has never been found in previous studies using dry milling. With increasing milling time, Ti2N was observed to gradually transform into the stoichiometric compound TiN. Upon heating, the Ti2N formed during milling was completely transformed to TiN. The intrinsic mechanisms of the solid–liquid reactions are discussed.