Structure and microstructure of leached Raney-type Al-Ni powders

被引：12
|
作者：
Dahlborg, U. [1 ]
Bao, C. M. [1 ]
Calvo-Dahlborg, M. [1 ]
Devred, F. [2 ]
Nieuwenhuys, B. E. [2 ]
机构：
[1] Univ Rouen, CNRS, UMR6634, GPM, F-76801 St Etienne, France
[2] Leiden Univ, Leiden Inst Chem, NL-2333 CC Leiden, Netherlands
来源：
JOURNAL OF MATERIALS SCIENCE | 2009年 / 44卷 / 17期
关键词：
SMALL-ANGLE SCATTERING; INTERACTING PARTICLES; ACTIVE PHASE; CATALYSTS; NICKEL; ALLOY; ATOMIZATION; DIFFRACTION; TRANSITIONS;
D O I：
10.1007/s10853-009-3712-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure and microstructure of some leached Raney-type Al-Ni alloys of different compositions have been investigated by neutron diffraction and by small-angle neutron scattering. It was found that all alloys contain a crystalline face-centred cubic (fcc) Ni phase as well as an Al3Ni2 phase, the amount of which is decreasing with increasing Al content of the initial alloy. Both the Ni and the Al3Ni2 phases are conjectured to be non-stoichiometric. There is no indication of any other crystalline phase. The size of the Ni crystallites in all leached alloys has been found to be of the order of 30 , whereas the size of the Al3Ni2 ones varies with initial alloy composition and is found to be in the range of 100-250 . The change in structure by doping the initial alloys with small amounts of Ti and Cr is after leaching marginal.
引用
收藏
页码：4653 / 4660
页数：8
相关论文
共 50 条
  • [11] Structure and phase-composition of Ti-doped gas atomized Raney-type Ni catalyst precursor alloys
    Mullis, A. M.
    Bigg, T. D.
    Adkins, N. J.
    INTERMETALLICS, 2015, 67 : 63 - 68
  • [12] Explosion hazard and prevention of Al-Ni mechanical alloy powders
    Jiang, Haipeng
    Bi, Mingshu
    Zhang, Jiankan
    Zhao, Fengqi
    Wang, Jiaying
    Sun, Fang
    Xiao, Qiuping
    Gao, Wei
    JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2022, 75
  • [13] Structural characterisation of Al-Ni powders produced by gas atomisation
    Bao, C.M.
    Dahlborg, U.
    Adkins, N.
    Calvo-Dahlborg, M.
    Journal of Alloys and Compounds, 2009, 481 (1-2): : 199 - 206
  • [14] Bimetal Al-Ni nano-powders for energetic formulations
    Abraham, Ani
    Nie, Hongqi
    Schoenitz, Mirko
    Vorozhtsov, Alexander B.
    Lerner, Marat
    Pervikov, Alexander
    Rodkevich, Nikolay
    Dreizin, Edward L.
    COMBUSTION AND FLAME, 2016, 173 : 179 - 186
  • [15] THERMAL STABILITIES OF THE RANEY-TYPE NI-AL2O3 AND NI-CR2O3-AL2O3 CATALYSTS
    SHIMIZU, M
    TAKEOKA, S
    NIPPON KAGAKU KAISHI, 1981, (06) : 1034 - 1036
  • [16] HYDROGENATION ACTIVITY OF THE RANEY-TYPE CATALYSTS PREPARED FROM NI-AL-TI ALLOYS MANUFACTURED BY PYROMETALLURGICAL AND MECHANOCHEMICAL ALLOYING
    GOSTIKIN, VP
    NISHCHENKOVA, LG
    GOLUBKOVA, GV
    KOZLOVA, LV
    KINETICS AND CATALYSIS, 1995, 36 (01) : 107 - 110
  • [17] Influence of phase composition and particle size of atomised Ni-Al alloy samples on the catalytic performance of Raney-type nickel catalysts
    Devred, F.
    Gieske, A. H.
    Adkins, N.
    Dahlborg, U.
    Bao, C. M.
    Calvo-Dahlborg, M.
    Bakker, J. W.
    Nieuwenhuys, B. E.
    APPLIED CATALYSIS A-GENERAL, 2009, 356 (02) : 154 - 161
  • [18] The influence of cooling rate on the microstructure of an Al-Ni hypereutectic alloy
    Gonzalez, G.
    Lara-Rodriquez, G. A.
    Sandoval-Jimenez, A.
    Saikaly, W.
    Charai, A.
    MATERIALS CHARACTERIZATION, 2008, 59 (11) : 1607 - 1612
  • [19] Electrochemical corrosion behavior of gas atomized Al-Ni alloy powders
    Osorio, Wislei R.
    Spinelli, Jose E.
    Afonso, Conrado R. M.
    Peixoto, Leandro C.
    Garcia, Amauri
    ELECTROCHIMICA ACTA, 2012, 69 : 371 - 378
  • [20] Microstructure of Mo powders sintered with Ni and Ni3Al powders
    Sakamoto, Takashi
    Nishida, Minoru
    Okazaki, Kenji
    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 1999, 46 (12): : 1221 - 1225
12345