composites;
intermetallic-matrix;
nickel aluminides based on NiAl;
functionally gradient composites;
reaction synthesis;
phase interfaces;
D O I:
10.1016/S0966-9795(97)00076-9
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:
Reactive Hot Compaction of Ni and Al powders in which one or both of the powders were preoxidized was carried out to fabricate functionally gradient composite (FGC) of NiAl with in -situ Al2O3 reinforcement. The FGC consisted of five layers with a variation of alumina content from less than 4% on one side to about 52% on the other. The gradient in the composition was obtained by stacking different powder mixtures of desired compositions. Individual composites corresponding to the different layers were also synthesized to study the evolution of microstructure during compaction. The alumina was observed to form a continuous network around the NiAl during the synthesis. The effects of powder oxidation and of the heating rate on the process and microstructure have been discussed on the basis of the DTA studies. The results indicate that during the synthesis of NiAl, Al3Ni is the phase that forms first, followed by Al3Ni2 and NiAl. (C) 1998 Elsevier Science Limited. All rights reserved.
机构:
Islamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, IranIslamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, Iran
Beyhaghi, Maryam
Kiani-Rashid, Alireza
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机构:
Ferdowsi Univ Mashhad, Dept Met & Mat Engn, Mashhad 917751111, Razavi Khorasan, IranIslamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, Iran
Kiani-Rashid, Alireza
Khaki, Jalil Vahdati
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Ferdowsi Univ Mashhad, Dept Met & Mat Engn, Mashhad 917751111, Razavi Khorasan, IranIslamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, Iran
Khaki, Jalil Vahdati
Kashefi, Mehrdad
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Ferdowsi Univ Mashhad, Dept Met & Mat Engn, Mashhad 917751111, Razavi Khorasan, IranIslamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, Iran
Kashefi, Mehrdad
Jonsson, Stefan
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机构:
Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, SwedenIslamic Azad Univ, Fac Engn, Dept Met & Ceram, Mashhad Branch, Mashhad, Razavi Khorasan, Iran
机构:
La Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, FranceLa Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
Troncy, R.
Bonnet, G.
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La Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, FranceLa Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
Bonnet, G.
Pedraza, F.
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La Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, FranceLa Rochelle Univ, LaSIE UMR 7356, CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
机构:
Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
Zygmuntowicz, Justyna
Cymerman, Konrad
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Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
Cymerman, Konrad
Wachowski, Marcin
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机构:
Mil Univ Technol, Fac Mech Engn, 2 Gen S Kaliskiego St, PL-00908 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
机构:
Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
Zygmuntowicz, Justyna
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Konopka, Katarzyna
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Krasnowski, Marek
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Piotrkiewicz, Paulina
Bolek, Jan
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机构:
Warsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
Bolek, Jan
Wachowski, Marcin
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h-index: 0
机构:
Mil Univ Technol, Fac Mech Engn, 2 Gen S Kaliskiego St, PL-00908 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland
Wachowski, Marcin
Zurowski, Radoslaw
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机构:
Warsaw Univ Technol, Fac Chem, 3 Noakowskiego St, PL-00664 Warsaw, PolandWarsaw Univ Technol, Fac Mat Sci & Engn, 141 Woloska St, PL-02507 Warsaw, Poland