Synthesis of Ni-Ti Coatings on Different Metallic Substrates by Mechanical Alloying and Subsequent Laser Treatment

Autor: Vladislav Yu Zadorozhnyy, Aamir Shahzad, Mikhail D. Pavlov, Anatoly M. Chirkov, Dmitry S. Zagrebin, Renata S. Khasenova, Aleksandr I. Novikov, Sergey D. Kaloshkin
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Metals, Vol 8, Iss 7, p 490 (2018)
Druh dokumentu: article
ISSN: 2075-4701
DOI: 10.3390/met8070490
Popis: In this work, we proposed a novel mechanical alloying method to deposit Nix-Tixintermetallic coating on various metallic substrates using laser treatment. Three different substrates (Al-based alloy, Ti-based alloy, and hypoeutectoid steel) were used, and 50–70 μm thick NixTix coating was deposited during the process. For mechanical alloying, we used a self-constructed vibratory ball mill (single chamber) and for laser treatment, we used a “TrumpfTruDisk 1000” machine equipped with a four-dimensional control system “Servokon” designed specifically for experimental studies. Different laser beam intensities were used for laser operation. The cross-sectional microstructures of coatings were studied using a scanning electron microscope equipped with a Bruker energy-dispersive X-ray Spectrometer (EDS). Additional investigation of a cross-sectional area of one of the NixTix-coated samples was performed with field emission high-performance SEM and focused ion beam (FIB). Phase compositions of the obtained coatings, before and after laser treatment, were analyzed using X-Ray diffraction method. After the deposition process, the micro-hardness of the coatings was measured using a Vickers hardness tester. The structure and morphology of the obtained coatings were investigated.
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