Multiscale wear of plasma-sprayed carbon-nanotube-reinforced aluminum oxide nanocomposite coating

被引：109
作者：
Balani, Kantesh [1 ]
Harimkar, Sandip P. [2 ]
Keshri, Anup [1 ]
Chen, Yao [1 ]
Dahotre, Narendra B. [2 ]
Agarwal, Arvind [1 ]
机构：
[1] Florida Int Univ, Miami, FL 33174 USA
[2] Univ Tennessee, Knoxville, TN 37996 USA
来源：
ACTA MATERIALIA | 2008年 / 56卷 / 20期
关键词：
Plasma spraying; Al2O3-carbon nanotube (CNT) nanocomposite; Nano-scratch test; Multiscale-wear tribology;
D O I：
10.1016/j.actamat.2008.08.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A multiple length scale wear study of plasma-sprayed Al2O3-carbon nanotube (CNT) nanocomposite coating is described. CNT content and dispersion have been shown to enhance the macro-weat resistance (pin-on-disk) by more than 49 times, and nano-wear (scratch) resistance up to 18 times. CNTs have been shown to reduce the wear of Al2O3 matrix by (i) increasing densification, (ii) CNT bridging and (iii) CNT lubrication. A strong dependence of wear volume loss on the microstructural features is described at different length scales, and the disparity of material loss observed in the macro- and nano-wear tests is explained. A wear model has been established to numerically quantify wear loss dependence in terms of bulk material properties and correlating these with wear parameters from nano-scratch testing. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5984 / 5994
页数：11
相关论文
共 37 条
  • [1] Tribological properties of hot-pressed alumina-CNT composites
    An, JW
    You, DH
    Lim, DS
    [J]. WEAR, 2003, 255 (1-6) : 677 - 681
  • [2] Process map for plasma sprayed aluminum oxide-carbon nanotube nanocomposite coatings
    Balani, K.
    Agarwal, A.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2008, 202 (17) : 4270 - 4277
  • [3] In situ carbon nanotube reinforcements in a plasma-sprayed aluminum oxide nanocomposite coating
    Balani, K.
    Zhang, T.
    Karakoti, A.
    Li, W. Z.
    Seal, S.
    Agarwal, A.
    [J]. ACTA MATERIALIA, 2008, 56 (03) : 571 - 579
  • [4] Role of powder treatment and carbon nanotube dispersion in the fracture toughening of plasma-sprayed aluminum oxide-carbon nanotube nanocomposite
    Balani, Kantesh
    Bakshi, Srinivasa Rao
    Chen, Yao
    Laha, Tapas
    Agarwal, Arvind
    [J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (10) : 3553 - 3562
  • [5] Tribological behavior of plasma-sprayed carbon nanotube-reinforced hydroxyapatite coating in physiological solution
    Balani, Kantesh
    Chen, Yao
    Harlinkar, Sandip P.
    Dahotre, Narendra B.
    Agarwal, Arvind
    [J]. ACTA BIOMATERIALIA, 2007, 3 (06) : 944 - 951
  • [6] Wetting of carbon nanotubes by aluminum oxide
    Balani, Kantesh
    Agarwal, Arvind
    [J]. NANOTECHNOLOGY, 2008, 19 (16)
  • [7] Multiscale functional analysis of wear - A fractal model of the grinding process
    Bigerelle, M
    Najjar, D
    Iost, A
    [J]. WEAR, 2005, 258 (1-4) : 232 - 239
  • [8] Wear behaviour of thermally sprayed ceramic oxide coatings
    Bolelli, Giovanni
    Cannillo, Valeria
    Lusvarghi, Luca
    Manfredini, Tiziano
    [J]. WEAR, 2006, 261 (11-12) : 1298 - 1315
  • [9] Fracture toughness of carbides in tool steels evaluated by nanoindentation
    Casellas, Daniel
    Caro, Jaume
    Molas, Silvia
    Prado, Jose M.
    Valls, Isaac
    [J]. ACTA MATERIALIA, 2007, 55 (13) : 4277 - 4286
  • [10] Modified Eshelby tensor modeling for elastic property prediction of carbon nanotube reinforced ceramic nanocomposites
    Chen, Yao
    Balani, Kantesh
    Agarwal, Arvind
    [J]. APPLIED PHYSICS LETTERS, 2007, 91 (03)
1234