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作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2018, Vol.66 (3), pp.551-562
摘要:The paper analyzes the VPS - Ti / TiC composite coating. The powder was deposited at low pressure with an F4 plasma gun produced by Plasma Technik AG because of the influence of the environment on powder oxidation. The main goal of the work was to prevent low-pressure decomp...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2017, Vol.65 (2), pp.378-391
摘要:In this study, the aim was to deposit layers of the Ni22Cr10Al1Y coating using the vacuum plasma spray process to protect gas turbine engine components from oxidation and high-temperature corrosion. The coating can significantly affect the properties of the substrate because it f...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2019, Vol.67 (2), pp.255-269
摘要:Low pressure of inert gas in the vacuum chamber significantly affects the transfer of plasma particle velocity onto powder particles, residence time of powder particles in plasma and the kinetic energy of molten particles before the collision with the substrate. In addition to lo...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2018, Vol.66 (4), pp.864-879
摘要:One of the factors for a successful application of ceramic coatings on biomedical implants is the compatibility of the physical and mechanical properties of coatings with the metal substrates of implants. Temperature and temperature gradient in the coating during powder depositio...
作者:Mrdak Mihailo R.
来源:[J].Vojnotehnički glasnik, 2017, Vol.65 (3), pp.662-672
摘要:Powder Mo&O2 has an important role in the production of coatings with increased resistance to slide in conditions without the use of lubricants. Mo&O2 coatings have the low coefficient of friction and good abrasion characteristics in mechanical stresses. For the purpose of produc...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2017, Vol.65 (1), pp.30-44
摘要:ZrO2 stabilized with Y2O3 has superior and excellent physical properties compared to other modern ceramic materials. Due to its high biocompatibility, ZrO2 ceramics in the ZrO2 - Y2O3 system is widely used as a biomaterial in orthopedic surgery. ZrO2 - Y2O3 ceramics is widely app...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2018, Vol.66 (2), pp.415-430
摘要:For successful powder deposition and a good quality of deposited layers, the following factors are of great importance: uniform powder injection into the plasma jet, transfer of heat and velocity of plasma particles (ions and electrons) to powder particles as well as the tem...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2018, Vol.66 (1), pp.28-40
摘要:Plasma spray Cr2O3 ceramic layers are used as a separate coating or as a supplement to bio-reactive organic composite ceramics Ca10(PO4)6(OH)2-Al2O3-ZrO2-Cr2O3 and other bio-inert ceramics in composites of the types Al2O3-ZrO2-SrO-Cr2O3-Y2O3, ZrO2-TiO2-Cr2O3 and TiO2-Cr2O3 to inc...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2019, Vol.67 (1), pp.116-130
摘要:The characteristics of plasma spray coatings are directly related to the type of process applied (APS - atmospheric plasma spray, VPS - vacuum plasma spray, and SPS - suspension plasma spray), the characteristics of the powder and the powder deposition parameters. The properties ...
作者:Mrdak, Mihailo R.
来源:[J].Vojnotehnički glasnik, 2017, Vol.65 (4), pp.924-936
摘要:Al2O3 is hard oxide ceramics, chemically bioinert and with good sliding properties; it has found wide application in the design of engineering components. The aim of the paper was to apply the APS process with the change of plasma currents in order to produce Al2O3 layers of such...

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