A discussion of La doping on the nucleation of α-Al in Al-Zn-Si coating

被引：6
作者：
Liu, Wei [1 ,2 ,3 ,4 ]
Liu, Bin [1 ,2 ,3 ,4 ]
Xu, Wencan [1 ,2 ,3 ,4 ]
Cheng, Yufeng [5 ]
Guan, Renguo [6 ]
Li, Qian [1 ,2 ,3 ,4 ]
机构：
[1] Shanghai Univ, State Key Lab Adv Special Steel, 99 Shangda Rd, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Mat Genome Inst, 99 Shangda Rd, Shanghai 200444, Peoples R China
[3] Shanghai Univ, Sch Mat Sci & Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China
[4] Shanghai Univ, Shanghai Key Lab Adv Fenomet, 99 Shangda Rd, Shanghai 200444, Peoples R China
[5] Univ Calgary, Dept Mech Engn, Calgary, AB T2N 1N4, Canada
[6] Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 228卷
基金：
中国国家自然科学基金;
关键词：
Metals and alloys; Corrosion; Doping; Heterogeneous nucleation; CORROSION-RESISTANCE; MICROSTRUCTURE; STEEL;
D O I：
10.1016/j.matlet.2018.06.069
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The addition of trace La significantly affected the properties of the Al-Zn-Si coating. Adding La improved the corrosion resistance of the coating. More importantly, it restrained the nucleation of alpha-Al dendrites consequently leading to coarser grains. Based on the density functional theory calculations, we found that the doping concentration was important to the spontaneous nucleation of the heterogeneous nucleus in liquid metal, and there should be a transition between homogeneous nucleation and heterogeneous nucleation. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：411 / 413
页数：3
相关论文
共 17 条
  • [1] Vacancy formation enthalpies of high-entropy FeCoCrNi alloy via first-principles calculations and possible implications to its superior radiation tolerance
    Chen, Weiliang
    Ding, Xueyong
    Feng, Yuchao
    Liu, Xiongjun
    Liu, Kui
    Lu, Z. P.
    Li, Dianzhong
    Li, Yiyi
    Liu, C. T.
    Chen, Xing-Qiu
    [J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2018, 34 (02) : 355 - 364
  • [2] Nucleation of the primary al phase on TiAl3 during solidification in hot-dip Zn-11%Al-3%Mg-0.2%Si-coated steel sheet
    Honda, Kazuhiko
    Ushioda, Kohsaku
    Yamada, Wataru
    Tanaka, Koki
    Hatanaka, Hidetoshi
    [J]. MATERIALS TRANSACTIONS, 2008, 49 (06) : 1401 - 1409
  • [3] Grain refining performance of Al-Ti master alloys with different microstructures
    Li, PJ
    Kandalova, EG
    Nikitin, V
    [J]. MATERIALS LETTERS, 2005, 59 (06) : 723 - 727
  • [4] Defect formation energies in A2B2O7 pyrochlores
    Li, Yan
    Kowalski, Piotr M.
    Beridze, George
    Birnie, April R.
    Finkeldei, Sarah
    Bosbach, Dirk
    [J]. SCRIPTA MATERIALIA, 2015, 107 : 18 - 21
  • [5] Atomic-scale studies of native point defect and nonstoichiometry in silicon oxynitride
    Liu, B.
    Wang, J. Y.
    Li, F. Z.
    Tong, Q. F.
    Zhou, Y. C.
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2009, 70 (06) : 982 - 988
  • [6] Combination study of DFT calculation and experiment for photocatalytic properties of S-doped anatase TiO2
    Liu, Rujun
    Zhou, Xiaosong
    Yang, Fan
    Yu, Ying
    [J]. APPLIED SURFACE SCIENCE, 2014, 319 : 50 - 59
  • [7] MONKHORST HJ, 1976, PHYS REV B, V13, P5188, DOI [10.1103/PhysRevB.13.5188, 10.1103/PhysRevB.16.1746]
  • [8] Peng W., 2016, LIGHT MET, P301
  • [9] Perdew JP, 1997, PHYS REV LETT, V78, P1396, DOI 10.1103/PhysRevLett.77.3865
  • [10] Inversed solid-phase grain boundary wetting in the Al-Zn system
    Protasova, S. G.
    Kogtenkova, O. A.
    Straumal, B. B.
    Zieba, P.
    Baretzky, B.
    [J]. JOURNAL OF MATERIALS SCIENCE, 2011, 46 (12) : 4349 - 4353
12