Cold Spray of SiC and Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt; With Soft Metal Incorporation: A Technical Contribution

Lee, Ha Yong; Yu, Young Ho; Lee, Young Cheol; Hong, Young Pyo; Ko, Kyung‐Seok

doi:10.1361/10599630419355

Cited by 81 publications

(30 citation statements)

References 13 publications

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“…Different properties of the cold spray cermet coatings such as adhesion, wear resistance, corrosion resistance, and so forth were studied ( Ref 4,7,[9][10][11][12][13]. For example, the addition of Al 2 O 3 to Al powder is reported to enhance the coating-to-substrate adhesion (Ref 7).…”

Section: Introductionmentioning

confidence: 99%

Effect of Ceramic Particle Velocity on Cold Spray Deposition of Metal-Ceramic Coatings

Sova

Косарев

Papyrin³

et al. 2010

J Therm Spray Tech

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In this paper, metal-ceramic coatings are cold sprayed taking into account the spray parameters of both metal and ceramic particles. The effect of the ceramic particle velocity on the process of metal-ceramic coating formation and the coating properties is analyzed. Copper and aluminum powders are used as metal components. Two fractions of aluminum oxide and silicon carbide are sprayed in the tests. The ceramic particle velocity is varied by the particle injection into different zones of the gas flow: the subsonic and supersonic parts of the nozzle and the free jet after the nozzle exit. The experiments demonstrated the importance of the ceramic particle velocity for the stability of the process: Ceramic particles accelerated to a high enough velocity penetrate into the coating, while low-velocity ceramic particles rebound from its surface.

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Section: Introductionmentioning

confidence: 99%

Effect of Ceramic Particle Velocity on Cold Spray Deposition of Metal-Ceramic Coatings

Sova

Косарев

Papyrin³

et al. 2010

J Therm Spray Tech

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“…Lee et al [10,11], Shkodkin et al [12], and Irissou et al [8] reported that incorporating ceramic particles into metallic coatings not only improved the quality of the coatings by reducing their porosity but also increased their bonding strength. Porosity reduction of the coatings contributes to further enhanced corrosion resistance [8].…”

Section: Introductionmentioning

confidence: 99%

Cold‐Sprayed Aluminum‐Silica Composite Coatings Enhance Antiwear/Anticorrosion Performances of AZ31 Magnesium Alloy

Fang

Gao

et al. 2018

Advances in Materials Science and Engineering

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Extensive efforts devoted in recent years to booming structural applications of lightweight magnesium alloys are usually undermined by their insufficient surface properties. Surface modification is therefore necessarily required in most cases for enhanced surface integrity of the alloys. Here, we report construction of aluminum-silica protective layers by cold spray on AZ31 magnesium alloys, and the effect of the silica additives on microstructure and mechanical properties of the coatings was examined. e ceramic particles were dispersed evenly in the coatings, and increased silica content gives rise to enhanced adhesion, antiwear performances, and microhardness of the coatings. e even distribution of silica in the coatings altered the wear regimes from adhesive to abrasive wear. e cold spray fabrication of the aluminum-silica protective coatings would facilitate structural applications of the magnesium alloys.

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“…Incorporation of alumina not only significantly improves wear resistance, but also dramatically increases both the density of the coating, and the bond strength between the coating and the substrate, through the "hammering" effect [11][12][13][14][15] upon impact of the particles onto the substrate. In addition, Spencer, Luzin and Zhang [16,17] have also measured the residual stress of various cold sprayed coatings on magnesium alloy substrates using neutron diffraction.…”

Section: Introductionmentioning

confidence: 99%

The effect of cold sprayed coatings on the mechanical properties of AZ91D magnesium alloys

Xiong

Zhang

2014

Surface and Coatings Technology

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Although many previous studies have confirmed that cold sprayed Al+xAl 2 O 3 (x=0-75vol.%) composite coatings on magnesium alloys can effectively improve wear and corrosion resistance, the effect of such coatings on tensile and fatigue properties is still unclear. The present work aims to evaluate the tensile properties and fatigue resistance of an AZ91D alloy with cold sprayed Al+xAl 2 O 3 (x=0, 30, 50vol.%) coatings. The experimental results showed that although the cold spray coating leads to an increase in yield strength and fatigue limit, the tensile strength is reduced. In-situ examination of the macro-morphology of surfaces of the coated specimens during tensile testing was carried out through video recording. It indicated that once the tensile specimens have yielded, horizontal cracks that were perpendicular to the tensile axis formed on the surface of the specimens. Fractographic analysis of the fracture surfaces of the tensile specimens in a scanning electron microscope revealed that all the cracks within the cold sprayed coatings were suspended at the coating/substrate interface. Based on these experimental observations, it is considered that the improved yield strength is attributed to the constraint effect of the cold sprayed composite coatings on the magnesium substrate. The enhanced fatigue limit is a result of the higher yield strength and the coating/substrate interface barrier to crack propagation. The decrease in tensile strength is attributed to the brittle fracture of the cold sprayed coatings when yielding of the specimens.

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Cold Spray of SiC and Al<SUB>2</SUB>O<SUB>3</SUB> With Soft Metal Incorporation: A Technical Contribution

Cited by 81 publications

References 13 publications

Effect of Ceramic Particle Velocity on Cold Spray Deposition of Metal-Ceramic Coatings

Effect of Ceramic Particle Velocity on Cold Spray Deposition of Metal-Ceramic Coatings

Cold‐Sprayed Aluminum‐Silica Composite Coatings Enhance Antiwear/Anticorrosion Performances of AZ31 Magnesium Alloy

The effect of cold sprayed coatings on the mechanical properties of AZ91D magnesium alloys

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