Synthesis of VC-Cr3C2 Nanocomposite Powders by Carbothermal Reduction

被引：0

作者：

Jin, Yongzhong ^{[1
,2
]}

Ye, Faming ^{[1
]}

Huang, Bin ^{[1
]}

Yang, Ruisong ^{[1
]}

机构：

[1] Sichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong City 643000, Peoples R China

[2] Sichuan Coll & Univ, Key Lab Mat Corros & Protect, Zigong City 643000, Peoples R China

来源：

NANOSCIENCE AND NANOTECHNOLOGY LETTERS | 2012年 / 4卷 / 10期

关键词：

Chromium Carbide; Vanadium Carbide; Nanocomposite Powder; Vacuum-Aided Carbothermal Reduction; Precursor; WC-CO; CEMENTED CARBIDES; GRAIN-GROWTH; CATALYSTS; CR3C2;

D O I：

10.1166/nnl.2012.1445

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

VC-Cr3C2 nanocomposite powders with 20-100 nm were synthesized from precursors by vacuum carbothermal reduction at 900 degrees C for 2 h. The phase composition of the synthesized products with various ratios of chromium and vanadium was investigated systemically. The present study shows that there are not single-phase VC and Cr3C2 in VC-x wt% Cr3C2 (with 10 <= x <= 90) nanocomposite powders. When low-concentration V or Cr element exists in the reaction system, (V, Cr) C or (Cr, V)(3)C-2 solid solution phase forms easily but the solubility of Cr atoms in VC lattices is larger than that V atoms in Cr3C2. With the increase of Cr addition, there is a shifting trend of (V, Cr) C diffraction peaks toward higher angle. Two phases of (V, Cr) C solid solution and Cr2VC2 compound exist in VC-50 wt% Cr3C2 and VC-70 wt% Cr3C2 system.

引用

页码：1028 / 1030

页数：3

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