作者:Li, Y (Li, Y.)[1,3 ]; Zeng, MQ (Zeng, M. Q.)[1,3 ]; Liu, JW (Liu, J. W.)[1,3 ]; Lu, ZC (Lu, Z. C.)[2,3 ]
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文献类型:Article
Nanocrystalline metal nitride and hydride powders were prepared using plasma-assisted ball milling in ammonia gas (NH3-P-milling) via an in situ synthesis reaction. The gas-solid reactions were triggered by a short duration of plasma milling of Mg and Ti under a constant pressure of ammonia gas, and the products in the two systems were nanocrystalline Mg3N2 and TiN, TiH2 after 10 h, respectively. During the NH3-P-milling of Ti powder, TiH2 and TiN were formed during the initial stages of milling, and then, the TiH2 decomposed during further milling upon reaction with N radicals, transforming into the TiN phase. In contrast, no chemical reaction occurred between NH3 and Mg/Ti after 10 h of C-milling. The discharge plasma activated and decomposed the ammonia gas and activated the surface of the powders, which, together with the mechanical effect of high-energy ball milling, accelerated the gas-solid reactions.
作者关键词:Plasma milling; Solid-gas reaction; Metal nitride; Metal hydride
KeyWords Plus:COMBUSTION SYNTHESIS; TITANIUM; TIN
通讯作者地址:Lu, ZC (通讯作者)
 | South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510640, Guangdong, Peoples R China. |
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电子邮件地址:mezclu@scut.edu.cn
| 基金资助机构 | 授权号 |
|---|---|
| National Natural Science Foundation of China | 51501065 |
| Fundamental Research Funds for the Central Universities, SCUT | 2017MS010 |
| National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials Open Fund, SCUT | 2016002 |