219 Result(s)
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Article
Open AccessThe Microstructure, Surface Topography and Wear Resistance of Cold-Sprayed (Cr3C2-25(Ni20Cr))-(Ni-graphite) Composite Coatings Modified by Diode Laser Treatment
Cold-sprayed composite coatings have several advantages; however, some properties, such as hardness and abrasion resistance, are lower than those in plasma- or HVOF-sprayed deposits. This work showed that the ...
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Article
Open AccessPrinted Electronics by Plasma Spraying: Case Study for High Temperature Sensors
Temperature sensors are critical components in many industrial and research applications, particularly in harsh environments where high temperatures, corrosion and mechanical stress are prevalent. In this pape...
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Open AccessComparison of Microwave Versus Conventional Furnace Heat Treatments of Carbide Composite Thermal Spray Coatings
Thermal spraying has become an industrial standard in the production of wear-resistant WC-Co and Cr3C2-NiCr composite coatings. However, generating optimum wear-resistant nano-reinforced carbide microstructures w...
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Open AccessCFD Investigation of a Co-Flow Nozzle for Cold Spray Additive Manufacturing Applications
This current work evaluates the efficacy of a co-flow nozzle for cold spray applications with the aim of mitigating nozzle clogging issues, which can occur during long-duration operations, by replacing the sol...
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Open AccessAnalysis of Data Generation and Preparation for Porosity Prediction in Cold Spray using Machine Learning
Cold spray is an additive manufacturing and coating process in which powder particles are accelerated to supersonic speeds without melting them and then deposit on a surface to form a layer of a coating. Proce...
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Open AccessNumerical and Experimental Investigation for Application of CoNiCrAlY Coatings by HVAF
A relatively small change in oxide content and microstructure in MCrAlY coatings (M = Co, Ni) can affect the functionality of the coating for oxidation protection or as a bond coat. The objective of this study...
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Open AccessFretting Behavior of WC-Co-Cr Coatings Against QT Steel in Bolted Joint
Fretting damage on contacting surfaces introduces major challenges in mechanical assemblies. Thermal sprayed hardmetal coatings are extensively used for surface modification in tribological applications under ...
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Open AccessPolymer Metallization by Cold Spray Deposition of Polyamide-Copper Composite Coatings
Cold spray metallization of polymers is a promising surface engineering technique that enables the deposition of metal coatings onto polymer substrates at low process temperatures, resulting in improved surfac...
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Open Access45S5/PEEK Coatings by Cold Gas Spray with In Vitro Bioactivity, Degradation, and Cellular Proliferation
This study evaluated the biological response of cold-sprayed coatings composed of bioactive glass 45S5 and polyetheretherketone (PEEK). The functional coatings were produced by cold gas spray (CGS) technology,...
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Article
Open AccessSiC-YAG Coating Microstructure Optimization Through Powder Feedstock Manufacturing Process Control
A silicon carbide/yttrium aluminum garnet (SiC/YAG) composite powder feedstock material developed and patented by NTNU (Norway) in 2012 has been used to produce industrial SiC thermal spray coatings since 2014...
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Open AccessNumerical and Experimental Analysis of a Solid Shroud in Multi-arc Plasma Spraying
Plasma spraying is characterized by high flexibility, but has challenges of high energy consumption and oxidation of the metallic spray particles. Modified plasma spraying processes using a gas or solid shroud...
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Open AccessThe Potential of High-Velocity Air-Fuel Spraying (HVAF) to Manufacture Bond Coats for Thermal Barrier Coating Systems
Driven by the search for an optimum combination of particle velocity and process temperature to achieve dense hard metal coatings at high deposition efficiencies and powder feed rates, the high-velocity air-fu...
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Open AccessForming Behavior of Additively Manufactured Al/Ti Material Compounds Produced by Cold Spraying
Cold spraying has great potential for additive manufacturing, especially of oxidation-sensitive metals, because the material is not melted and significantly higher deposition rates can be achieved than with co...
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Article
Open AccessCopper Coatings for Antibiotics Reduction in Fattening Livestock
In the current work, twin-wire arc-sprayed copper coatings are investigated to reduce the spread of pathogenic germs in broiler farming. Compressed air and nitrogen are used as process gasses, while the coatin...
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Open AccessAutomated Trajectory Planning and Analytical Improvement for Automated Repair by Robot-Guided Cold Spray
Cold spraying has emerged as a promising technique for the repair of metallic components. Manipulating the cold spray gun by industrial robots, referred to as robot-guided cold spraying, enables flexible and c...
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Open AccessWear and Corrosion Resistant Eutectic High-Entropy Alloy Al0.3CoCrFeNiMo0.75 Produced by Laser Metal Deposition and Spark-Plasma Sintering
Eutectic high-entropy alloys (EHEAs) with a fine-lamellar structure and homogenous property profile are of particular interest for wear and corrosion protection coatings. High cooling rates in the laser metal ...
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Open AccessData-Driven Overlap**-Track Profile Modeling in Cold Spray Additive Manufacturing
Cold spray additive manufacturing is an emerging solid-state deposition process that enables large-scale components to be manufactured at high-production rates. Control over geometry is important for reducing ...
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Open AccessMixed-Material Feedstocks for Cold Spray Additive Manufacturing of Metal–Polymer Composites
High-performance polymers such as poly(ether ether ketone) (PEEK) are appealing as composite components for a wide variety of industrial and medical applications due to their excellent thermomechanical propert...
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Open AccessQuantitative Nondestructive Evaluation of Cold Spray Manufactured Aluminum Alloy 6061 and Copper Samples
Cold spray (CS) is a solid-state process for depositing thick layers of material via the successive high-velocity impact of powder particles onto a solid surface, which leads to high rates of deformation, inte...
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Open AccessMultipurpose Additives Toward Improving the Polymer Cold Spray Process
Polymers have proven to be challenging to cold spray, particularly with high efficiency and quality when using inexpensive nitrogen (N2) and air propellants. Helium (He), when used as a process propellant, can im...
