Sputtered Hf-Ti nanostructures: A segregation and high-temperature stability study

被引：34
作者：
Polyakov, Mikhail N. [1 ]
Chookajorn, Tongjai [2 ,3 ]
Mecklenburg, Matthew [4 ]
Schuh, Christopher A. [2 ]
Hodge, Andrea M. [1 ,5 ]
机构：
[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[2] MIT, Dept Mat Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[3] NSTDA, Natl Met & Mat Technol Ctr MTEC, Pathum Thani 12120, Thailand
[4] Univ So Calif, Ctr Electron Microscopy & Microanal, Los Angeles, CA 90089 USA
[5] Univ So Calif, Dept Chem Engn & Mat Sci, 3650 McClintock Ave, Los Angeles, CA 90089 USA
来源：
ACTA MATERIALIA | 2016年 / 108卷
关键词：
Multilayers; Sputter deposition; Nanostructured metals; Thermodynamic stability; Monte Carlo simulation; SELF-DIFFUSION; BOUNDARY DIFFUSION; THERMAL-STABILITY; GRAIN-GROWTH; METALS; ENERGY; BULK; SIZE;
D O I：
10.1016/j.actamat.2016.01.073
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-temperature stability and segregation tendency of a Hf-Ti alloy is investigated using specimens sputtered in monolithic and multilayer configurations. Upon annealing at 800 degrees C for 96 h, the alloy shows segregation of Hf and Ti at the nanoscale even though the bulk Hf-Ti phase diagram predicts a homogeneous solid solution. The length scale of segregation is found to depend upon the initial as deposited structure, with the monolithic film showing Ti segregation at grain boundaries, and the multilayered specimens showing a nanostructure of Hf-rich grains and Ti-rich intergranular amorphous regions. The multilayer specimens exhibit similar post-annealing grain diameters even when the initial layer thickness is varied. Thermodynamic Monte Carlo simulations show a solid solution when the bulk constraint is imposed, in line with the phase diagram expectation, and a polycrystalline nanostructure with solute segregated intergranular regions with full equilibration, in general agreement with the experimental observations. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：8 / 16
页数：9
相关论文
共 50 条
  • [31] Thermal stability of high-temperature materials. Part 1
    V. V. Kolomeitsev
    S. A. Suvorov
    E. F. Kolomeitseva
    Refractories and Industrial Ceramics, 2004, 45 : 327 - 332
  • [32] Effect of Thermal Treatments on Ni–Mn–Ga and Ni-Rich Ni–Ti–Hf/Zr High-Temperature Shape Memory Alloys
    Santamarta R.
    Evirgen A.
    Perez-Sierra A.M.
    Pons J.
    Cesari E.
    Karaman I.
    Noebe R.D.
    Shape Memory and Superelasticity, 2015, 1 (04) : 418 - 428
  • [33] Thermal stability of high-temperature materials. Part 2
    Kolomeitsev, VB
    Suvorov, SA
    Kolomeitseva, EF
    Kolomeitseva, OV
    REFRACTORIES AND INDUSTRIAL CERAMICS, 2004, 45 (05) : 364 - 372
  • [34] Thermal stability of high-temperature materials. Part 1
    Kolomeitsev, VV
    Suvorov, SA
    Kolomeitseva, EF
    REFRACTORIES AND INDUSTRIAL CERAMICS, 2004, 45 (05) : 327 - 332
  • [35] Thermal stability and high-temperature oxidation behavior of Si-Cr-N coatings with high content of silicon
    Mikula, M.
    Grancic, B.
    Drienovsky, M.
    Satrapinskyy, L.
    Roch, T.
    Hajovska, Z.
    Gregor, M.
    Plecenik, T.
    Cicka, R.
    Plecenik, A.
    Kus, P.
    SURFACE & COATINGS TECHNOLOGY, 2013, 232 : 349 - 356
  • [36] Single-step fabricated disordered pyramidal nanostructures for large-scale broadband visible light absorber with high-temperature stability
    Li, Defang
    Zhang, Jinying
    Xu, Jiushuai
    Peiner, Erwin
    APPLIED SURFACE SCIENCE, 2022, 601
  • [37] Mechanical properties and thermal stability of reactively sputtered multi-principal-metal Hf-Ta-Ti-V-Zr nitrides
    Kirnbauer, A.
    Kretschmer, A.
    Koller, C. M.
    Wojcik, T.
    Paneta, V
    Hans, M.
    Schneider, J. M.
    Polcik, P.
    Mayrhofer, P. H.
    SURFACE & COATINGS TECHNOLOGY, 2020, 389
  • [38] Effect of nitrogen content on high-temperature stability of hard and optically transparent amorphous Hf-Y-Si-B-C-N coatings
    Farhadizadeh, A.
    Vlcek, J.
    Houska, J.
    Haviar, S.
    Cerstvy, R.
    Cervena, M.
    Zeman, P.
    Matas, M.
    CERAMICS INTERNATIONAL, 2023, 49 (04) : 6086 - 6093
  • [39] Characteristics of Ti-Based High-Temperature Thermally Stable Coating Films
    Huang, Chia-Hung
    Fu, Jian-Xun
    Hwang, Weng-Sing
    Chu, Chi-Wen
    Lin, Ying-Chieh
    Tang, Chih-Yuan
    NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 2012, 4 (12) : 1166 - 1170
  • [40] Lithium nickelate electrodes with enhanced high-temperature performance and thermal stability
    Arai, H
    Tsuda, M
    Sakurai, Y
    JOURNAL OF POWER SOURCES, 2000, 90 (01) : 76 - 81
12345