Experimental study of titanium/aluminium deposits produced by cold gas dynamic spray

Новоселова, Т. В.; Fox, Peter; Morgan, R.P.; O’Neill, W

doi:10.1016/j.surfcoat.2004.10.133

Cited by 97 publications

(64 citation statements)

References 15 publications

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“…Such compressed gases are usually air, nitrogen (N 2 ), or helium (He). Current research has demonstrated that higher particle impact velocity enhances the overall quality of Ti cold sprayed coatings, although the velocity required for fully dense titanium coatings using nitrogen as the propelling gas has not been reported yet (Ref 1,(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28). The general approach to attain superior velocity when using nitrogen as the propelling gas is to increase its temperature.…”

Section: Introductionmentioning

confidence: 99%

Influence of Helium and Nitrogen Gases on the Properties of Cold Gas Dynamic Sprayed Pure Titanium Coatings

et al. 2010

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This study investigates the effect of propellant gas, helium, and nitrogen during cold spraying of titanium coatings. Coatings were characterized by SEM and were evaluated for their deposition efficiency (DE), microhardness, and porosity. In selected conditions, three particle velocities were investigated in which for each condition, the propelling gasesÕ temperature and pressure were attuned to attain similar particle velocities for each gas. Observations show that loosely bonded particles can be detached by high-pressure supersonic gas stream. Selected coatings were characterized by XPS to analyze the occurrence of oxidation and nitridation. Although generally accepted that coating characteristics can be affected by particle temperature, results show that for the same particle velocity, DE and coating density are also a function of substrate temperature. In addition, a thick and fully dense cold sprayed titanium coating was achieved with optimized spray parameters and nozzle using helium. The corresponding average particle velocity was 1173 m/s.

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Section: Introductionmentioning

confidence: 99%

Influence of Helium and Nitrogen Gases on the Properties of Cold Gas Dynamic Sprayed Pure Titanium Coatings

et al. 2010

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“…A thin nano-meter oxide layer is expected to form naturally on the surface of titanium substrate as identified in earlier studies [18]. However, for three dimensional model analyses, it is insignificant due to its very small thickness [1] and is negligible.…”

Section: Computational Domain and Boundary Conditionsmentioning

confidence: 74%

Development of 3D Multicomponent Model for Cold Spray Process Using Nitrogen and Air

et al. 2015

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Cold spray is a unique coating technology that allows for solid state deposition of particles under atmospheric pressure. In this paper, a three dimensional, Computational Fluid Dynamics (CFD) multicomponent model is developed to estimate cold spray gas conditions involving both nitrogen and air. Calibration of the model followed by validation is accomplished by considering the thermal history of substrate exposed to cold spray supersonic jet. The developed holistic multicomponent model is effective in determining the state of gas and particles from injection point to the substrate surface with the advantage of optimizing very rapid cold spray deposition in nanoseconds. The validation of k-ε type CFD multicomponent model is done by using the temperature measured for a titanium substrate exposed to cold spray nitrogen at 800 °C and 3 MPa. Heat transfer and radiation are considered for the de Laval nozzle used in cold spray experiments. The calibrated multicomponent model has successfully estimated the state of propellant gas for the chosen high pressure and high temperature cold spray conditions. Moreover, the multicomponent model predictions are in good agreement with a previous holistic three dimensional cold spray model in which only nitrogen was used as the surrounding as well as the propellant gas. OPEN ACCESSCoatings 2015, 5 689 Keywords: cold gas dynamic spraying; supersonic jet; computational fluid dynamics (CFD); coating technique; three dimensional multicomponent numerical model

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“…The fabrication of these so-called cermet powders can be achieved by three processes, namely solid state, liquid state, and vapor deposition. In that, a combination of metal with hard grains, in which the metal acts as a matrix allowing hard grains to be embedded within and facilitating the development of high density or functional coatings [49][50][51][52][53][54][55].…”

Section: Cold Spray Of Cermet Materialsmentioning

confidence: 99%

Development of Sustainable Cold Spray Coatings and 3D Additive Manufacturing Components for Repair/Manufacturing Applications: A Critical Review

2017

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This review article presents the findings of a comprehensive state-of-the-art literature review of the scientific and technological progress of the cold spray process in the field of repair/remanufacturing using the concept of additive manufacturing. A thorough study was conducted on the potential of this technology to form (a) both thin and thick coatings; (b) the ability to fabricate 3D freeform components in a single process, while benefiting from reduced residual stress level compared to conventional thermal spray coatings processes such as high velocity oxy-fuel (HVOF) or plasma spraying. A systematic overview of the process technology, particularly focusing on the suitability of ceramic-metallic (cermet) composite particles used as feedstock in the deposition was conducted; further elaboration was made pertinent to particle impact and bonding mechanisms during the deposition.

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Experimental study of titanium/aluminium deposits produced by cold gas dynamic spray

Cited by 97 publications

References 15 publications

Influence of Helium and Nitrogen Gases on the Properties of Cold Gas Dynamic Sprayed Pure Titanium Coatings

Influence of Helium and Nitrogen Gases on the Properties of Cold Gas Dynamic Sprayed Pure Titanium Coatings

Development of 3D Multicomponent Model for Cold Spray Process Using Nitrogen and Air

Development of Sustainable Cold Spray Coatings and 3D Additive Manufacturing Components for Repair/Manufacturing Applications: A Critical Review

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