Wear Behavior of Plasma-Sprayed Carbon Nanotube-Reinforced Aluminum Oxide Coating in Marine and High-Temperature Environments

被引：55
作者：
Keshri, Anup Kumar [1 ,2 ,3 ]
Agarwal, Arvind [1 ,2 ]
机构：
[1] Florida Int Univ, Plasma Forming Lab, Miami, FL 33174 USA
[2] Florida Int Univ, High Temp Tribol Lab, Miami, FL 33174 USA
[3] Vellore Inst Technol, Mfg Div, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2011年 / 20卷 / 06期
关键词：
carbon nanotube; friction and wear; nanocrystalline; composites; nanopowders; nanostructured coatings; plasma spraying; wear mechanisms; TRIBOLOGICAL BEHAVIOR; COMPOSITE COATINGS; FRACTURE-TOUGHNESS; OXIDATION;
D O I：
10.1007/s11666-011-9669-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Wear behavior of plasma-sprayed carbon nanotube (CNT)-reinforced aluminum oxide (Al2O3) composite coatings are investigated at room temperature (298 K), elevated temperature (873 K), and in sea water. Lowest wear volume loss was observed in the sea water as compared to dry sliding at 298 and 873 K. Relative improvement in the wear resistance of Al2O3-8 wt.% CNT coating compared to Al2O3 was 72% at 298 K, 76% at 873 K, and 66% in sea water. The improvement in the wear resistance of Al2O3-CNT coatings is attributed to (i) larger area coverage by protective film on the wear surface at room temperature and in sea water, (ii) higher fracture toughness of Al2O3-CNT coatings due to CNT bridging between splats, and (iii) anti-friction effect of sea water. The average coefficient of friction (COF) was the lowest (0.55) in sea water and the highest (0.83) at 873 K for Al2O3-8 wt.% CNT coating.
引用
收藏
页码：1217 / 1230
页数：14
相关论文
共 30 条
[1]   Wear resistant properties of multi-walled carbon nanotubes reinforced Al2O3 nanocomposites [J].
Ahmad, I. ;
Kennedy, A. ;
Zhu, Y. Q. .
WEAR, 2010, 269 (1-2) :71-78
[2]   Tribological properties of hot-pressed alumina-CNT composites [J].
An, JW ;
You, DH ;
Lim, DS .
WEAR, 2003, 255 (1-6) :677-681
[3]  
[Anonymous], NANOMATERIALS TECHNO
[4]   A CRITICAL-EVALUATION OF INDENTATION TECHNIQUES FOR MEASURING FRACTURE-TOUGHNESS .1. DIRECT CRACK MEASUREMENTS [J].
ANSTIS, GR ;
CHANTIKUL, P ;
LAWN, BR ;
MARSHALL, DB .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (09) :533-538
[5]   Process map for plasma sprayed aluminum oxide-carbon nanotube nanocomposite coatings [J].
Balani, K. ;
Agarwal, A. .
SURFACE & COATINGS TECHNOLOGY, 2008, 202 (17) :4270-4277
[6]   Multiscale wear of plasma-sprayed carbon-nanotube-reinforced aluminum oxide nanocomposite coating [J].
Balani, Kantesh ;
Harimkar, Sandip P. ;
Keshri, Anup ;
Chen, Yao ;
Dahotre, Narendra B. ;
Agarwal, Arvind .
ACTA MATERIALIA, 2008, 56 (20) :5984-5994
[7]   Corrosion wear behaviors of micro-arc oxidation coating of Al2O3 on 2024Al in different aqueous environments at fretting contact [J].
Ding, Hong-yan ;
Dai, Zhen-dong ;
Skuiry, Suresh C. ;
Hui, David .
TRIBOLOGY INTERNATIONAL, 2010, 43 (5-6) :868-875
[8]  
Evans A.G., 1981, FUNDAM FRICT WEAR MA, P439
[9]   Preparation of the SnO2/SiO2 xerogel with a large specific surface area [J].
Feng, YS ;
Zhou, SM ;
Li, Y ;
Zhang, LD .
MATERIALS LETTERS, 2003, 57 (16-17) :2409-2412
[10]   Preparation and sintering of nanosized α-Al2O3 powder [J].
Karagedov, GR ;
Lyakhov, NZ .
NANOSTRUCTURED MATERIALS, 1999, 11 (05) :559-572
123