Formation of porous Ni-Al intermetallics through pressureless reaction synthesis

被引：69

作者：

Dong, H. X. ^{[1
]}

Jiang, Y. ^{[1
]}

He, Y. H. ^{[1
]}

Song, M. ^{[1
]}

Zou, J. ^{[2
,3
]}

Xu, N. P. ^{[4
]}

Huang, B. Y. ^{[1
]}

Liu, C. T. ^{[5
]}

Liaw, P. K. ^{[5
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Univ Queensland, Div Mat, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia

[4] Nanjing Univ Technol, Membrane Sci & Technol Res Ctr, Nanjing 210009, Peoples R China

[5] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 484卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Ni-Al intermetallics; Powder metallurgy; Porous; Intermediates; EXTRUSION REACTION SYNTHESIS; NICKEL-ALUMINIDE; PORE STRUCTURE; PHASE; INTERDIFFUSION; FABRICATION; COMBUSTION; ALLOYS; NI3AL; METALS;

D O I：

10.1016/j.jallcom.2009.05.079

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pressureless reaction synthesis method was used to produce porous NiAl and Ni3Al intermetallics using elemental Ni and Al powder mixture in this investigation. The sintering behavior of Ni and Al mixed powder compacts was investigated by applying XRD, SEM and EDS in the temperature range of 510-1000 degrees C. It has been found that the formation of porous Ni3Al and NiAl was accompanied by the volume expansion due to the formation of intermediates and pores during the reaction synthesis procedure. The intensive reaction and phase transformation procedures were similar in the Ni-14wt% Al and Ni-30wt% Al. However, the maximum pore size, expansion ratio and porosity have been found to be varied with the sintering temperature and Al content in the compacts. The Al content in the green compacts could effectively influence the volume expansion and pores of the products: the volume expansion and maximum pore size of NiAl are much higher than that of Ni3Al under the same sintering procedure. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：907 / 913

页数：7

共 31 条

[1] Manufacture, characterisation and application of cellular metals and metal foams [J].

Banhart, J .

PROGRESS IN MATERIALS SCIENCE, 2001, 46 (06) :559-U3

[2]

BOSE A, 1988, POWDER METALL INT, V20, P25

[3]

BRADLY AJ, 1982, J LESS-COMMON MET, V87, P117

[4] Shock-induced reaction in a flake nickel plus spherical aluminum powder mixture [J].

Eakins, D. ;

Thadhani, N. N. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (11)

[5] Modeling of reactive synthesis in consolidated blends of fine Ni and Al powders [J].

Farber, L ;

Klinger, L ;

Gotman, I .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 254 (1-2) :155-165

[6] Effect of heating rate on pore structure of porous FeAl material [J].

Gao, H. Y. ;

He, Y. H. ;

Shen, P. Z. ;

Xu, N. P. ;

Zou, J. ;

Jiang, Y. ;

Huang, B. Y. ;

Liu, C. T. .

POWDER METALLURGY, 2008, 51 (02) :171-175

[7] Kinetics of phase formation in binary thin films: The Ni/Al case [J].

Garcia, VH ;

Mors, PM ;

Scherer, C .

ACTA MATERIALIA, 2000, 48 (05) :1201-1206

[8] Thermodynamic interdiffusion coefficient in binary systems with intermediate phases [J].

Garg, SP ;

Kale, GB ;

Patil, RV ;

Kundu, T .

INTERMETALLICS, 1999, 7 (08) :901-908

[9] Processing of iron aluminides by pressureless sintering through Fe plus Al elemental route [J].

Gedevanishvili, S ;

Deevi, SC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 325 (1-2) :163-176

[10] Fabrication of Ti-Al micro/nanometer-sized porous alloys through the Kirkendall effect [J].

He, Yuehui ;

Jiang, Yao ;

Xu, Nanping ;

Zou, Jin ;

Huang, Baiyun ;

Liu, Chain T. ;

Liaw, Peter K. .

ADVANCED MATERIALS, 2007, 19 (16) :2102-+

← 1 2 3 4 →