Kinetics of composite coating formation process in cold spray: Modelling and experimental validation

Sova, A.; Maestracci, R.; Jeandin, Michel; Bertrand, Ph.; Smurov, I.

doi:10.1016/j.surfcoat.2016.06.084

Cited by 32 publications

(12 citation statements)

References 17 publications

(13 reference statements)

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“…In particular, for the same powder, the ratio between adhered and rebounded particles could vary from less than 0.1 to almost 1 depending on the material of impacted surface [2]. Such effect could be particularly important during coating growth in case of simultaneous spraying of several metal powders [27]. Probably, the similar phenomenon affected the coating formation in current case.…”

Section: Deposition Efficiency and Coating Formation Kineticsmentioning

confidence: 82%

Formation of metal composites by detonation spray of powder mixtures

Ulianitsky

Rybin

Sova

et al. 2021

Int J Adv Manuf Technol

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The feasibility study of elaboration of metal composite coatings by detonation spray using the blends of iron, nickel, copper, cobalt, and aluminum powders was performed using different spray modes. The numerical simulation of particle parameters showed that the particles formed the coating in solid, semi-molten, or molten state depending on the spraying modes, particle material, and particle size. It was shown that successful formation of the coating containing all powder mixture components could be achieved in case of proper optimization of spraying parameters. Obtained Fe-Co-Ni, Fe-Co-Ni-Cu, and Fe-Co-Ni-Cu-Al coatings had the uniform lamellae structure. However, the composition of the coatings differed from the initial powder mixture composition due to different deposition efficiencies of the powders. It was also found the mutual influence of blend components on bonding. In particular, the deposition efficiency of iron particles was probably affected by copper.

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Section: Deposition Efficiency and Coating Formation Kineticsmentioning

confidence: 82%

Formation of metal composites by detonation spray of powder mixtures

Ulianitsky

Rybin

Sova

et al. 2021

Int J Adv Manuf Technol

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“…Достаточно хорошо известно, что формирование покрытий при ХГН осуществляется в результате высокоскоростного соударения частиц порошка о поверхность подложки с последующей их деформацией [10][11][12]. Возникающая адиабатическая не- А. В. Шоринов, С. Е. Маркович устойчивость сдвига обеспечивает достаточное течение материала и нагрев для формирования связей на границе частицы и подложки [10]. Обязательным условием для формирования покрытия является скорость соударения частицы.…”

Section: постановка задачиunclassified

Керування Ефективністю Процесу Холодного Напилювання Захисно-Відновлювальних Покриттів На Магнієві Сплави

Шоринов¹,

Маркович²

2018

aktt

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66 УДК 621.793.7:669.721.5 А. В. ШОРИНОВ, С. Е. МАРКОВИЧ Национальный аэрокосмический университет им. Н. Е. Жуковского «ХАИ», Украина УПРАВЛЕНИЕ ЭФФЕКТИВНОСТЬЮ ПРОЦЕССА ХОЛОДНОГО НАПЫЛЕНИЯ ЗАЩИТНО-ВОССТАНОВИТЕЛЬНЫХ ПОКРЫТИЙ НА МАГНИЕВЫЕ СПЛАВЫ Выполнен поиск оптимальных параметров процесса холодного газодинамического напыления низкого давления для получения максимальной эффективности формирования защитно-восстановительных покрытий на магниевые сплавы. Установлено влияние параметров холодного напыления, а именно температуры и давления торможения газа, а также дистанции напыления, на температурноскоростные параметры частицы в процессе напыления. Установлено, что изменение температуры торможения газа оказывает наибольшее влияние на скорость частиц, и, как следствие, эффективность формирования покрытий. Полученные результаты являются основой для разработки технологических рекомендаций формирования защитно-восстановительных покрытий. Ключевые слова: холодное газодинамическое напыление, эффективность напыления, параметры напыления, критическая скорость

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“…In this method, either different powders are fed using dual feeding (Ref 11 ), or blended or mechanically alloyed powders are fed in a single stream, to produce dense MMC coatings (Ref 12 - 14 ). Fabrication of MMC coatings using CS is a relatively easier and more economical route compared to thermal spraying (Ref 6 , 7 , 9 , 15 ). Mixtures with several physical properties including reactive materials (Ref 16 , 17 ) can be sprayed without concern about reactions or phase transformations during the CS process (Ref 7 , 13 , 14 , 18 ).…”

Section: Introductionmentioning

confidence: 99%

“…This deviation stems from the fact that each powder material experiences its specific deposition efficiency (DE), which might be significantly different for each material. Furthermore, this specific DE is also influenced by the interactions between materials, resulting in a specific DE hard to predict (Ref 9 ). It has been shown that CS of Ti and Ni on dissimilar substrate material results in different critical velocities and deposition characteristics compared to similar Ti/Ti and Ni/Ni powder/substrate combinations (Ref 32 - 35 ).…”

Section: Introductionmentioning

confidence: 99%

Intermetallic Phase Evolution of Cold-Sprayed Ni-Ti Composite Coatings: Influence of As-Sprayed Chemical Composition

2020

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Owing to low-temperature deposition conditions and high deposition rate, cold spray offers unique advantages in manufacturing a wide variety of metallic and composite coatings including metal matrix composites produced from physically blended powders. One of the challenges of producing composite coatings using cold spray is the deviation of coatings composition from the blended feedstock powder composition. This is of utmost importance as it affects the composition and phase evolution of intermetallic forming coatings during post spray heat treatment. In this work, cold spray of composite Ni - Ti coatings and formation of intermetallics from post spray heat treatment were investigated as a first step to examine the potential of producing equiatomic bulk Ni - Ti by cold spray. Three different physically blended Ni and Ti powders mixtures were sprayed on titanium substrates to address the coating composition variation from the blended feedstock powder and study its influence on phase evolution during post spray heat treatment. High-density and well-dispersed composite coatings were achieved for each case. EDS analysis revealed as-sprayed coatings with 10.5, 35.9 and 56.9 at.% Ni (and with balanced Ti ratios) from the three powder mixtures. Annealing treatments were conducted at 400, 500 and 900 °C for 1 and 2 h and comparative studies of the intermetallic compound formations were carried out. Microstructural investigation showed that all three equilibrium intermetallics phases of binary Ni - Ti phase diagram (Ni 3 Ti, Ti 2 Ni and NiTi) formed in the two Ni-rich composite coatings with NiTi phase being maximum in the coating with the closest composition to equiatomic ratio while only Ti 2 Ni phase formed in the Ti-rich coating after annealing. Thermal etching analysis of coatings showed that NiTi phase forms with a gradient microstructure from Ti splats boundary toward the center of splats, which is attributed to the grain refinement of CS samples at splat boundary and intermetallic nucleation mechanism.

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Kinetics of composite coating formation process in cold spray: Modelling and experimental validation

Cited by 32 publications

References 17 publications

Formation of metal composites by detonation spray of powder mixtures

Formation of metal composites by detonation spray of powder mixtures

Керування Ефективністю Процесу Холодного Напилювання Захисно-Відновлювальних Покриттів На Магнієві Сплави

Intermetallic Phase Evolution of Cold-Sprayed Ni-Ti Composite Coatings: Influence of As-Sprayed Chemical Composition

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