Effect of alumina particle size on characteristics, corrosion, and tribological behavior of Co/Al2O3 composite coatings

2020 ◽  
Vol 46 (4) ◽  
pp. 5351-5359 ◽  
Author(s):  
S. Mahdavi ◽  
A. Asghari-Alamdari ◽  
M. Zolola-Meibodi
Keyword(s):  
Particle Size ◽  
Alumina Particle ◽  
Tribological Behavior ◽  
Composite Coatings ◽  
Al2o3 Composite

Mechanical Milling Prepared Nano-Sized Al2O3 Particles Utilized in Electroless Plating Ni-P- Al2O3 Composite Coatings

2012 ◽  
Vol 602-604 ◽  
pp. 1700-1705 ◽  
Author(s):  
Ai Zhi Yu ◽  
Mao Dong Li ◽  
Jin Mei Lin ◽  
Shu Kuan Zhang
Keyword(s):  
Heat Treatment ◽  
Particle Size ◽  
Wear Resistance ◽  
Mechanical Milling ◽  
Chemical Method ◽  
Composite Coatings ◽  
Micro Hardness ◽  
Mechanical Method ◽  
Al2o3 Composite ◽  
Steel Substrates

In this paper, nano-sized Al2O3 particles were prepared by mechanical milling, and Ni-P-Al2O3 composite coatings were plated on Q235 steel substrates, which plating solutions were containing different concentrations Al2O3 particles. The morphology, phase and particle size distribution of the as-prepared Al2O3 particles, and the properties of the coatings were investigated. The results show that, the morphology of the as-prepared Al2O3 particles were spherical and almost size under 100nm, the coatings were uniformly thickness and the Al2O3 particles were uniformly dispersed in the coatings, after heat treatment, the micro-hardness and wear resistance of the coatings were significantly improved, compared with the chemical method prepared Al2O3 particles, the mechanical method prepared Al2O3 particles had the same performance in improving the micro-hardness of the coatings.

Slurry Erosion of Arc-Sprayed Metal and Composite Coatings

1997 ◽  
Author(s):  
B. Arsenault ◽  
J.-G. Legoux ◽  
H. Hawthorne
Keyword(s):  
Particle Size ◽  
Alumina Particle ◽  
Wear Behavior ◽  
Composite Coatings ◽  
Dominant Factor ◽  
Slurry Erosion ◽  
Angle Effect ◽  
Stainless Steel 316 ◽  
Cored Wires ◽  
Erodent Particle

Abstract Two grades of stainless steel, 316 and 440-C, in the form of solid wire, and two cored wires, Duocor and 95-MXC, were used. Coatings were made using the Miller BP-400 and TAFA 9000 systems. Slurry jet erosion tests were conducted using a 10 %w/w alumina particle/water slurry. Two alumina particle sizes, 320 and 80 grit (nominal grain diameters 35 μm and 200 μm, respectively) were used at impinging angles of 90° and 20°. The nominal impact velocity of the slurry was 15 m/s and the nozzle-specimen distance 100 mm. The volume loss of material under various slurry erosion conditions was related to the coating properties and microstructure. Results indicate that the wear behavior of arc sprayed materials is dependent on the erodent particle size; for large erodent particle size, the relative erosion is almost independent of the impinging angle, while for the smaller particle size the angle effect is the dominant factor. This behavior can be related to the lamella structure and the relative toughness of the different phases of the coatings.

TiC-TiSi2-Al2O3 composite coatings prepared by spray drying, heat treatment and plasma spraying

2021 ◽  
Vol 857 ◽  
pp. 158221
Author(s):  
Yu-duo Ma ◽  
Wei Li ◽  
Ming-yan Guo ◽  
Yong Yang ◽  
Yu-hang Cui ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Spray Drying ◽  
Plasma Spraying ◽  
Composite Coatings ◽  
Al2o3 Composite

Microstructure, microhardness and tribological behavior of Al2O3 reinforced A380 aluminum alloy composite coatings prepared by cold spray technique

2018 ◽  
Vol 350 ◽  
pp. 391-400 ◽  
Author(s):  
Xiang Qiu ◽  
Naeem ul Haq Tariq ◽  
Ji-qiang Wang ◽  
Jun-rong Tang ◽  
Lawrence Gyansah ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Cold Spray ◽  
Tribological Behavior ◽  
Composite Coatings ◽  
Alloy Composite ◽  
Spray Technique

Effect of the particle size of nanosilica on the performance of epoxy/silica composite coatings

2005 ◽  
Vol 40 (15) ◽  
pp. 3927-3932 ◽  
Author(s):  
Junjie Yuan ◽  
Shuxue Zhou ◽  
Guangxin Gu ◽  
Limin Wu
Keyword(s):  
Particle Size ◽  
Composite Coatings ◽  
Silica Composite

MoS2 additive to the MAO Al2O3 composite coatings with enhanced mechanical performances

2018 ◽  
Vol 6 (1) ◽  
pp. 016543 ◽  
Author(s):  
Xin Wu ◽  
Hongxia Li ◽  
Junpeng Lu ◽  
Yangyang Li ◽  
Chengbiao Yang ◽  
...  
Keyword(s):  
Composite Coatings ◽  
Al2o3 Composite ◽  
Mechanical Performances
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