Effect of processing parameters on the mechanochemical synthesis of nanocrystalline molybdenum carbide

被引：27

作者：

Khabbaz, S. ^{[1
]}

Honarbakhsh-Raouf, A. ^{[1
]}

Ataie, A. ^{[2
]}

Saghafi, M. ^{[2
]}

机构：

[1] Univ Semnan, Sch Met & Mat Engn, Semnan, Iran

[2] Univ Tehran, Univ Coll Engn, Sch Met & Mat Engn, Tehran, Iran

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2013年 / 41卷

关键词：

Molybdenum carbide; Mechanochemical synthesis; Reduction; Nanocrystalline; REDUCTION;

D O I：

10.1016/j.ijrmhm.2013.05.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline molybdenum carbide (Mo2C) was synthesized from commercially pure MoO3 and graphite using high energy planetary ball milling and subsequent heat treatment. X-ray diffraction (XRD), differential thermal analysis/thermogravimetry (DTA/TG) and field emission scanning electron microscopy (FE-SEM) techniques were employed to evaluate powder particle characteristics. XRD results showed that during carbothermic reduction of MoO3, metallic molybdenum is formed as an intermediate phase before the carbide formation. Phase composition of the 20 h milled sample with 90% extra graphite after heat treatment at 1000 degrees C consists of nano-crystalline Mo2C with a mean crystallite size of 54 nm. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：402 / 407

页数：6

共 25 条

[1] Comparison of the group V and VI transition metal carbides for methane dry reforming and thermodynamic prediction of their relative stabilities [J].