Optimization of ceramic content in nickel–alumina composite coatings obtained by low pressure cold spraying

Cold spraying is a novel coating method, by which many composites have been successfully sprayed. The objective of this study was to thoroughly characterize the microstructure of copper as well as copper/alumina composite coatings obtained using this technique. Composite coatings which differed to the percentage of Al2O3 in the initial powder blend as well as the Al2O3 particle size were studied. Coatings presented Ra of the order of 6-8 μm, with the copper coating having the highest value. Using optical microscopy the deformation of the copper particles of the cross sections was evident. Thickness ranged from 170 to 450 μm for the different coatings. The surfaces and the cross sections of the coatings were studied by means of scanning electron microscopy. Craters and Al2O3 particles that were embedded in the copper particles were observed. The XRD analysis of the powders and the respective coatings presented no differences.

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Mechanical properties of low-pressure sintered WC-6Co cemented carbide doped with graphene oxide/alumina composite particles

Ceramics International ◽

10.1016/j.ceramint.2021.02.222 ◽

2021 ◽

Author(s):

Wuli Su ◽

Jie Zou ◽

Shuai Li ◽

Lan Sun

Keyword(s):

Mechanical Properties ◽

Graphene Oxide ◽

Low Pressure ◽

Cemented Carbide ◽

Composite Particles ◽

Alumina Composite

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Microstructure, Mechanical Properties and Dry Sliding Wear Behavior of Cu-Al2O3-Graphite Solid-Lubricating Coatings Deposited by Low-Pressure Cold Spraying

Journal of Thermal Spray Technology ◽

10.1007/s11666-018-0773-4 ◽

2018 ◽

Vol 27 (8) ◽

pp. 1652-1663 ◽

Cited By ~ 9

Author(s):

Wenyuan Chen ◽

Yuan Yu ◽

Jun Cheng ◽

Shuai Wang ◽

Shengyu Zhu ◽

...

Keyword(s):

Mechanical Properties ◽

Sliding Wear ◽

Wear Behavior ◽

Cold Spraying ◽

Low Pressure ◽

Dry Sliding Wear ◽

Dry Sliding

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Room-temperature deposition of hydroxyapatite/antibiotic composite coatings by vacuum cold spraying for antibacterial applications

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2017.09.085 ◽

2017 ◽

Vol 330 ◽

pp. 87-91 ◽

Cited By ~ 13

Author(s):

Deyan Li ◽

Yongfeng Gong ◽

Xiuyong Chen ◽

Botao Zhang ◽

Haijun Zhang ◽

...

Keyword(s):

Room Temperature ◽

Composite Coatings ◽

Cold Spraying ◽

Temperature Deposition

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Gradient Nickel – Alumina Composite Coatings

Materials Science Forum - Advanced Powder Technology V ◽

10.4028/0-87849-423-5.261 ◽

2006 ◽

pp. 261-268

Author(s):

Clarice Terui Kunioshi ◽

Olandir Vercino Correa ◽

Lalgudi Venkataraman Ramanathan

Keyword(s):

Composite Coatings ◽

Alumina Composite

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Plasma-sprayed graphene oxide reinforced alumina composite coatings on low carbon steel with improved fracture toughness, brittleness index, and microhardness

Materials Today Proceedings ◽

10.1016/j.matpr.2020.05.464 ◽

2020 ◽

Author(s):

A. Amudha ◽

H.S. Nagaraja ◽

H.D. Shashikala

Keyword(s):

Fracture Toughness ◽

Graphene Oxide ◽

Carbon Steel ◽

Composite Coatings ◽

Low Carbon Steel ◽

Brittleness Index ◽

Low Carbon ◽

Alumina Composite ◽

Plasma Sprayed

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Fabrication and characterization of W Cu composite coatings with different W contents by cold spraying

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2019.04.034 ◽

2019 ◽

Vol 368 ◽

pp. 8-14 ◽

Cited By ~ 7

Author(s):

Nan Deng ◽

Junrong Tang ◽

Tianying Xiong ◽

Jianqiang Li ◽

Zhangjian Zhou

Keyword(s):

Composite Coatings ◽

Cold Spraying ◽

Fabrication And Characterization

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Study on Corrosion Resistance and Wear Resistance of Zn–Al–Mg/ZnO Composite Coating Prepared by Cold Spraying

Coatings ◽

10.3390/coatings9080505 ◽

2019 ◽

Vol 9 (8) ◽

pp. 505

Author(s):

Xinqiang Lu ◽

Shouren Wang ◽

Tianying Xiong ◽

Daosheng Wen ◽

Gaoqi Wang ◽

...

Keyword(s):

Wear Resistance ◽

Composite Coatings ◽

Salt Spray ◽

Cold Spraying ◽

Neutral Salt ◽

Corrosion Resistant ◽

Electrochemical Tests ◽

Long Term Stability ◽

Spray Technique

Two composite coatings, Zn65Al15Mg5ZnO15 and Zn45Al35Mg5ZnO15, were prepared by the cold spray technique and were found to be compact, with no pits or cracks, based on scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) investigations. The results of the neutral salt spray (NSS) and electrochemical tests showed that the two composite coatings possess a suitable corrosion performance. However, the Zn45Al35Mg5ZnO15 composite coatings were more corrosion resistant and allowed a better long-term stability. In addition, they were found to exhibit the best wear resistance and photocatalytic degradation efficiency.

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