Premixed TiC-Ni composite powder prepared by mechanical milling of Ti-Ni alloy/graphite mixture and subsequent heat treatment

被引：4

作者：

Kwon, Hanjung ^{[1
]}

Kim, Jiwoong ^{[1
]}

Jung, Sun-A ^{[1
]}

Suh, Chang-Yul ^{[1
]}

Kil, Dae-Sup ^{[1
]}

Roh, Ki-Min ^{[1
]}

Kim, Wonbaek ^{[1
]}

Lim, Jae-Won ^{[2
,3
]}

机构：

[1] Korea Inst Geosci & Mineral Resources, Mineral Resources Res Div, Taejon 305350, South Korea

[2] Chonbuk Natl Univ, Div Adv Mat Engn, Jeonju 561756, South Korea

[3] Chonbuk Natl Univ, Res Ctr Adv Mat Dev, Coll Engn, Jeonju 561756, South Korea

来源：

POWDER TECHNOLOGY | 2014年 / 253卷

关键词：

First-principles calculation; Thermodynamic stability; Mechanical alloying; Titanium carbide/nickel composite; PSEUDOPOTENTIALS; MICROSTRUCTURE; TRANSITION;

D O I：

10.1016/j.powtec.2013.12.037

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The non-equilibrium (Ti,Ni)C solid-solution phase was prepared by mechanical milling of a Ti-Ni alloy/graphite mixture. The formation of the non-equilibrium (Ti,Ni)C solid solution was confirmed by X-ray diffraction. The (Ti,Ni)C solid-solution phase was found to decompose into TiC and finely dispersed Ni during the heat treatment in vacuum obviously due to the thermal instability of the non-equilibrium phase. The instability of the (Ti,Ni)C phase was clearly demonstrated by the consideration on the Gibbs free energy of formation of the phase. This new method allows the production of premixed TiC-Ni composite powder having a fine and uniform composition which may provide enhanced properties over the conventionally mixed TiC-Ni powder. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：681 / 685

页数：5

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