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Corrosion properties of cold sprayed aluminum coatings

Soboń D., Kaczmarczyk M., Makrenek M., Sienicki J., Żórawski W.

Welding Technology Review

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2018

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R. 90, nr 12

4--7

EN

The article presents the results of corrosion resistance tests of cold-sprayed aluminum coatings onto 4330 steel and Al 7075 aluminum alloy. The coatings were subjected to corrosion tests in a salt chamber. The obtained coatings are characterized by low porosity and very good anti-corrosion properties.

PL

W artykule przedstawiono wyniki badań odporności na korozję natryskiwanych zimnym gazem powłok aluminiowych na podłożu stalowym i stopie Al 7075. Powłoki zostały poddane badaniom korozyjnym w komorze solnej. Uzyskane powłoki charakteryzują się małą porowatością oraz bardzo dobrymi właściwości antykorozyjnymi.

2

Additive manufacturing of titanium with application of cold spray process

Żórawski W., Kowalski S., Mądry J., Sienicki J., Góral A., Makrenek M.

Technical Transactions

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2018

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Vol. 115, iss. 10

201--207

EN

Cold spraying is a new technology which can be used in the area of additive manufacturing. This method is suitable for oxygen-sensitive materials, such as titanium. In this paper the microstructure and mechanical properties of cold sprayed titanium deposit were characterized.

PL

Natryskiwanie zimnym gazem jest nową technologią, która może być wykorzystana również w technologiach przyrostowych. Ta metoda jest odpowiednia dla materiałów łatwo utleniających się takich jak tytan. W artykule scharakteryzowano mikrostrukturę i właściwości mechaniczne natryskanej zimnym gazem tytanowej struktury.

3

Properties of titanium coating deposited using spheroidal powders by cold spraying

Żórawski W., Mądry J., Sienicki J., Makrenek M., Góral A., Kowalski S.

Journal of Achievements in Materials and Manufacturing Engineering

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2017

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Vol. 82, nr 1

12--17

EN

Purpose: The purpose of this study was to investigate the microstructure and the properties of the Ti coatings cold sprayed using spheroidal powder on the Al 7075 alloy. Design/methodology/approach: The Ni powder with irregular shape of grains was applied in the cold spraying process. The coatings were sprayed by means of a Impact Innovations 5/8 system with of nitrogen as process gas. Findings: The high kinetic energy of titanium particles causes their significant deformation and splats strongly adhere to the substrate and to each other. Cold sprayed titanium coatings exhibit negligible porosity and different mechanical properties caused by varying deformation degree of titanium powder. There were no phase changes in titanium powder during the spray process, and the coating consist of crystalline titanium. Practical implications: Titanium and its alloys have unique properties such as a high strength to weight ratio, excellent corrosion resistance and bio-compatibility. These features make it a material that is ideally suited for use in the aerospace, medical, and corrosive industries. Originality/value: The main advantage of cold spraying is elimination of influence of temperature on the particles of the coating material and the substrate that occurs in conventional thermal spraying methods. Therefore, the properties of such formed coatings are not available in other technologies.