Study of structure and properties of self-fluxing alloy after modifying with nanostructured and micron-sized powders of cubic boron nitride and high pressure and high temperature treatment
DOI:
https://doi.org/10.31489/2019No2/11-15Keywords:
PG-SR4 self-fluxing nickel alloy, mechanical activation, nanostructured and micron-sized cBN powders, modifyingAbstract
The structural features and microhardness of sintered at high pressure and high temperature with the addition of nano- and micron-sized powders of cubic BN (cBN) self-fluxing nickel alloy PG-SR4 are studied. Based on the experiments, the modes of high pressure and high temperature treatment are established. The optimal content of the nanostructured cBN additive is determined, at which the material with the highest microhardness is formed. It is shown that the microhardness of the material with the addition of micron-sized cBN is 1.5–2 times lower than that for the samples with the same content of nanostructured cBN.
References
"1 Ilyuschenko A.Ph., Shevtsov A.I., Astashinsky V.M. et al. High-power pulse processing of thermal coatings based on a self-fluxing alloy and modified by solid high-melting compounds: research and modeling. High Temperature Material Processes. 2017, Vol. 21, No. 3, pp. 203–223. DOI:10.1615/HighTempMatProc.2017024942
Vityaz P.A., Ivashko V.S., Ilyushchenko A.F., Shevtsov A.I., Manoilo E.D. Theory and practice of coating. Minsk, Belarus. Science, 1998, 583 p. [in Russian]
Manoilo E.D., Onashchenko F.E. Gas-flame coating of self-fluxing alloys – new aspects. Mechanical Engineer. 2012, No. 4, pp. 6–9. [in Russian]
Kulik A.Ya., Borisov Yu.S., Mnukhin A.S. Thermal spraying of composite powders. Leningrad, Mechanical Engineering, 1985, 197 p. [in Russian]
Ilyushchenko A.F., Shevtsov A.I., Astashinsky V.M. et al. Investigation of the wear resistance and antifriction properties of gas-thermal coatings based on NiCrBSi alloy, modified with solid refractory compounds and pulsed high-energy impacts. Powder metallurgy. Minsk, 2018, No. 41. pp. 221–228. [in Russian]
Lyakhov N. Z., Talako T.L., Grigoryeva T.F. Influence of mechanical activation on the processes of phase and structure formation during self-propagating high-temperature synthesis. Novosibirsk, Parallel, 2008, 168 p. [in Russian]
Sobachkin A.V., Nazarov I.V., Yakovlev V.I. Morphology of coatings from multi-component, previously mechanically activated powders of SPS-composites. Metal processing. 2012, No 3 (56), pp. 141–144. [in Russian]
Golubev A.S., Kurdyumov A.V., Pilyankevich A.N. Boron nitride. Structure, properties, production. Kiev, Nauk. Dumka, 1987, 200 p. [in Russian]
Vityaz P.A., Senyut V.T., Kheifets M.L., Kolmakov A.G. Production of alumo-matrix composite material modified by nanostructured cubic boron nitride. Proceeding of the NAS of Belarus, Phys.-Tech. Ser. 2018, Vol. 63, No 3, pp. 271–279. DOI.org/10.29235/1561-8358-2018-63-3-271-279.
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