Momentum induced coalescence and alloying of Fe-Ni nanoclusters: A molecular dynamics simulation study

被引：4
作者：
Subbaraman, Ram [1 ]
Sankaranarayanan, Subramanian K. R. S. [2 ]
机构：
[1] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA
[2] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 522卷
关键词：
BIMETALLIC NANOCLUSTERS; CLUSTERS; ORDER; TRANSFORMATIONS; NANOCRYSTALS; STABILITY; SYSTEM;
D O I：
10.1016/j.cplett.2011.11.068
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：
The alloying mechanism of Fe-Ni nanoparticles formed under high impact collisions have been investigated using molecular dynamics simulations. The energetics and dynamics of the coalescence and structural evolution of Fe-Ni alloys during the collision process and subsequent quenching has been studied. The extent of alloy segregation and mixing is established to be strongly correlated to the initial momentum, particle sizes and the alloy composition. The resulting Fe-Ni alloy nanostructures have Fe-rich surface and depending on the alloy composition, show the presence of amorphous or well-defined crystalline phases that are absent in their bulk counterparts. In-line with this observation, the nanoscale phase diagram shows a non-monotonic variation in the melting transition. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：56 / 61
页数：6
相关论文
共 37 条
  • [1] ANDERKO MHK, 1958, CONSTITUTION BINARY
  • [2] BONGJIN VRM, 2007, NAT MATER, V6, P241
  • [3] OXYGEN INTERACTION WITH NI-FE SURFACES (1) LEED AND XPS STUDIES OF NI 76-PERCENT-FE 24-PERCENT (100)
    BRUNDLE, CR
    SILVERMAN, E
    MADIX, RJ
    [J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY, 1979, 16 (02): : 474 - 477
  • [4] 1ST-PRINCIPLES POTENTIALS IN MODELING STRUCTURE AND THERMODYNAMICS OF FE-NI ALLOYS
    CHENG, HP
    ELLIS, DE
    [J]. PHYSICAL REVIEW B, 1989, 39 (17): : 12469 - 12483
  • [5] Chiang WH, 2009, NAT MATER, V8, P882, DOI [10.1038/NMAT2531, 10.1038/nmat2531]
  • [6] A THERMODYNAMIC ANALYSIS OF THE PHASE-EQUILIBRIA OF THE FE-NI SYSTEM ABOVE 1200-K
    CHUANG, YY
    HSIEH, KC
    CHANG, YA
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (08): : 1373 - 1380
  • [7] Synthesis and Optical Properties of Hybrid and Alloy Plasmonic Nanoparticles
    Cortie, Michael B.
    McDonagh, Andrew M.
    [J]. CHEMICAL REVIEWS, 2011, 111 (06) : 3713 - 3735
  • [8] DAVIDE B, 2011, LANGMUIR, V27, P6409
  • [9] Nanoalloys: From theory to applications of alloy clusters and nanoparticles
    Ferrando, Riccardo
    Jellinek, Julius
    Johnston, Roy L.
    [J]. CHEMICAL REVIEWS, 2008, 108 (03) : 845 - 910
  • [10] HASHIBON A, 2009, PHILOS MAG, V89, P1
1234