Characteristics of high energy milled W-Ni-Fe nanocomposite powders

被引：0

作者：

Fan, JL ^{[1
]}

Huang, BY ^{[1
]}

Qu, XH ^{[1
]}

Zhao, MY ^{[1
]}

机构：

[1] Cent S Univ, Changsha 410083, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2001年 / 30卷 / 03期

关键词：

high energy ball milling; mechanical alloying; nanostructural composite; tungsten heavy alloy;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Systematic investigations were carried out on the structural change, surfacial characteristic and thermal stability of the 90W-7Ni-3Fe(mass%) high energy milled powders using a combination of X-ray powder diffraction, brunauer-emmett-teller(BET)nitrogen adsorption technique and differential thermal analysis assited by DTA. The experimental results show that ball-milling could produce an ultrafine composite powders in which large lattice distortion, supersolidus solution, amorphous phase and solubility extension of W in v phase were occurred due to the fast diffusion induced by high density of lattice defects and nanograin boundaries. BET results provide a further evidence that milling led the specific surface area of powders, surface of meso pore, pore size to decrease and micro pores to produce.

引用

页码：208 / 211

页数：4

共 10 条

[1] CHAIAT D, 1995, TUNGSTEN REFRACT MET, P54
[2] GERMAN RM, 1991, ADV POWDER METALLURG, V4, P183
[3] GURWELL WE, 1995, TUNGSTEN REFRACT MET, P65
[4] HEANEY DF, 1993, ADV POWDER METALLURG, P17
[5] JINGLIAN F, 1993, RARE METAL MAT ENG, V22, P7
[6] JINGLIAN F, 1999, RARE METAL MAT ENG, V28, P313
[7] JINGLIAN F, 1998, J CENTERAL S U TECHN, V29, P450
[8] CHARACTERIZATION OF MILLED SI3N4 POWDER USING X-RAY PEAK BROADENING AND SURFACE-AREA ANALYSIS
LONNBERG, B
[J]. JOURNAL OF MATERIALS SCIENCE, 1994, 29 (12) : 3224 - 3230
[9] MANI SS, 1990, ADV POWDER METALLURG, V1, P453
[10] MUKIRA CG, 1994, TUNGSTEN REFRACT MET, P157

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