TY  - JOUR
AU  - Mrdak, Mihailo
AU  - Lačnjevac, Časlav
AU  - Rakin, Marko
AU  - Janaćković, Đorđe
AU  - Veljić, Darko
AU  - Bajić, Darko
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5913
AB  - In this paper, analyzed are the effects of the plasma spray distance on the microstructure and mechanical properties of the NiCrAlCoY2O3 coating layers deposited at atmospheric pressure. The microstructure and mechanical properties of the coating layers are under the influence of the interaction of plasma particles (ions and electrons) with powder particles, providing the transfer of velocity and temperature of the plasma particles onto the powder particles. The effect of the interaction is directly dependent on the time the powder particles were present in the plasma which is defined by distance of the plasma gun from the substrate, depending on the granulation of the powder, the melting point and specific gravity. In order to obtain homogeneous and denser coating layers with high adhesion, in the experiment three distances from the substrate were used: 95 mm, 105 mm and 115 mm. The layers were deposited on thin sheets of AlMg1 aluminum thickness of 0.6 mm. Evaluation of mechanical properties of the layers was carried out by examining microhardness using the HV0.1 method and the bond strength by tensile testing. The morphology of the powder particles was examined on the SEM, while the microstructure of the layers was evaluated under a light microscope in accordance with the Pratt Whitney standard. The results of the experiment showed that the distance from the substrate substantially influenced the structure and mechanical properties of the coating layers. The best deposited layers were examined in the system with the ZrO224%MgO ceramic coating, which have proved to be reliable protectionfrom high temperature and abrasive rocket jet fuel.
PB  - Engineers Society for Corrosion
T2  - Materials Protection
T1  - [Characterization of deposited plasma spray nicralcoy2o3 coating layers on almg1 alloy substrates] [Karakterizacija deponovanih slojeva plazma sprej prevlake nicralcoy2o3 na podlogama od legure almg1]
EP  - 40
IS  - 1
SP  - 34
VL  - 2021
DO  - 10.5937/zasmat2101034M
ER  - 

@article{
author = "Mrdak, Mihailo and Lačnjevac, Časlav and Rakin, Marko and Janaćković, Đorđe and Veljić, Darko and Bajić, Darko",
year = "2021",
abstract = "In this paper, analyzed are the effects of the plasma spray distance on the microstructure and mechanical properties of the NiCrAlCoY2O3 coating layers deposited at atmospheric pressure. The microstructure and mechanical properties of the coating layers are under the influence of the interaction of plasma particles (ions and electrons) with powder particles, providing the transfer of velocity and temperature of the plasma particles onto the powder particles. The effect of the interaction is directly dependent on the time the powder particles were present in the plasma which is defined by distance of the plasma gun from the substrate, depending on the granulation of the powder, the melting point and specific gravity. In order to obtain homogeneous and denser coating layers with high adhesion, in the experiment three distances from the substrate were used: 95 mm, 105 mm and 115 mm. The layers were deposited on thin sheets of AlMg1 aluminum thickness of 0.6 mm. Evaluation of mechanical properties of the layers was carried out by examining microhardness using the HV0.1 method and the bond strength by tensile testing. The morphology of the powder particles was examined on the SEM, while the microstructure of the layers was evaluated under a light microscope in accordance with the Pratt Whitney standard. The results of the experiment showed that the distance from the substrate substantially influenced the structure and mechanical properties of the coating layers. The best deposited layers were examined in the system with the ZrO224%MgO ceramic coating, which have proved to be reliable protectionfrom high temperature and abrasive rocket jet fuel.",
publisher = "Engineers Society for Corrosion",
journal = "Materials Protection",
title = "[Characterization of deposited plasma spray nicralcoy2o3 coating layers on almg1 alloy substrates] [Karakterizacija deponovanih slojeva plazma sprej prevlake nicralcoy2o3 na podlogama od legure almg1]",
pages = "40-34",
number = "1",
volume = "2021",
doi = "10.5937/zasmat2101034M"
}

Mrdak, M., Lačnjevac, Č., Rakin, M., Janaćković, Đ., Veljić, D.,& Bajić, D.. (2021). [Characterization of deposited plasma spray nicralcoy2o3 coating layers on almg1 alloy substrates] [Karakterizacija deponovanih slojeva plazma sprej prevlake nicralcoy2o3 na podlogama od legure almg1]. in Materials Protection
Engineers Society for Corrosion., 2021(1), 34-40.
https://doi.org/10.5937/zasmat2101034M

Mrdak M, Lačnjevac Č, Rakin M, Janaćković Đ, Veljić D, Bajić D. [Characterization of deposited plasma spray nicralcoy2o3 coating layers on almg1 alloy substrates] [Karakterizacija deponovanih slojeva plazma sprej prevlake nicralcoy2o3 na podlogama od legure almg1]. in Materials Protection. 2021;2021(1):34-40.
doi:10.5937/zasmat2101034M .

Mrdak, Mihailo, Lačnjevac, Časlav, Rakin, Marko, Janaćković, Đorđe, Veljić, Darko, Bajić, Darko, "[Characterization of deposited plasma spray nicralcoy2o3 coating layers on almg1 alloy substrates] [Karakterizacija deponovanih slojeva plazma sprej prevlake nicralcoy2o3 na podlogama od legure almg1]" in Materials Protection, 2021, no. 1 (2021):34-40,
https://doi.org/10.5937/zasmat2101034M . .

TY  - JOUR
AU  - Mrdak, Mihailo
AU  - Lačnjevac, Časlav
AU  - Rakin, Marko
AU  - Janaćković, Đorđe
AU  - Veljić, Darko
AU  - Bajić, Darko
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6035
AB  - The aim of this study was to deposit multi-functional ZrO28%Y2O3 coating layers using the plasma spray technology and then to characterise such layers. In combination with other biomedical ceramics, this coating is intended for the application in implant surface modification. The examination was focused on the mechanical properties and microstructure layers. Using the atmospheric plasma spraying, duplex ZrO28%Y2O3/Ni22Cr10Al1Y coating system was deposited on the X15Cr13 stainless steel, with two different thicknesses of the bond and ceramic coatings. The microstructure was analysed using an optical microscope, including the assessment of the content of micropores. The morphology of powder particles and ceramic coating surfaces were examined on a scanning electron microscope (SEM). The quality of the ZrO28%Y2O3 layers makes them suitable for the application and combination with other materials to create a system of biomedical or multifunctional coatings.
PB  - Engineers Society for Corrosion
T2  - Materials Protection
T1  - Characterisation of biocompatible layers of ZrO28%Y2O used in combination with other ceramics to modify the surface of implants
EP  - 268
IS  - 4
SP  - 262
VL  - 62
DO  - 10.5937/zasmat2104262M
ER  - 

@article{
author = "Mrdak, Mihailo and Lačnjevac, Časlav and Rakin, Marko and Janaćković, Đorđe and Veljić, Darko and Bajić, Darko",
year = "2021",
abstract = "The aim of this study was to deposit multi-functional ZrO28%Y2O3 coating layers using the plasma spray technology and then to characterise such layers. In combination with other biomedical ceramics, this coating is intended for the application in implant surface modification. The examination was focused on the mechanical properties and microstructure layers. Using the atmospheric plasma spraying, duplex ZrO28%Y2O3/Ni22Cr10Al1Y coating system was deposited on the X15Cr13 stainless steel, with two different thicknesses of the bond and ceramic coatings. The microstructure was analysed using an optical microscope, including the assessment of the content of micropores. The morphology of powder particles and ceramic coating surfaces were examined on a scanning electron microscope (SEM). The quality of the ZrO28%Y2O3 layers makes them suitable for the application and combination with other materials to create a system of biomedical or multifunctional coatings.",
publisher = "Engineers Society for Corrosion",
journal = "Materials Protection",
title = "Characterisation of biocompatible layers of ZrO28%Y2O used in combination with other ceramics to modify the surface of implants",
pages = "268-262",
number = "4",
volume = "62",
doi = "10.5937/zasmat2104262M"
}

Mrdak, M., Lačnjevac, Č., Rakin, M., Janaćković, Đ., Veljić, D.,& Bajić, D.. (2021). Characterisation of biocompatible layers of ZrO28%Y2O used in combination with other ceramics to modify the surface of implants. in Materials Protection
Engineers Society for Corrosion., 62(4), 262-268.
https://doi.org/10.5937/zasmat2104262M

Mrdak M, Lačnjevac Č, Rakin M, Janaćković Đ, Veljić D, Bajić D. Characterisation of biocompatible layers of ZrO28%Y2O used in combination with other ceramics to modify the surface of implants. in Materials Protection. 2021;62(4):262-268.
doi:10.5937/zasmat2104262M .

Mrdak, Mihailo, Lačnjevac, Časlav, Rakin, Marko, Janaćković, Đorđe, Veljić, Darko, Bajić, Darko, "Characterisation of biocompatible layers of ZrO28%Y2O used in combination with other ceramics to modify the surface of implants" in Materials Protection, 62, no. 4 (2021):262-268,
https://doi.org/10.5937/zasmat2104262M . .

TY  - JOUR
AU  - Mrdak, Mihailo
AU  - Lačnjevac, Časlav
AU  - Rakin, Marko
AU  - Janaćković, Đorđe
AU  - Veljić, Darko
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5915
AB  - In this paper, studied was the melting of W powder particles in plasma, their behavior at oxidation as well as the mechanism of hardening on the surface of the substrate. Tungsten coating layers were deposited with vacuum plasma spray technology (VPS) on the test specimens of steel Č.4171 (X15Cr13 EN10027). VPS technology has advantages over the APS technology due to decreased oxidation of melted powder particles, by producing a coating with a controlled proportion of micro pores and greater uniformity of the deposited layers. Evaluation of mechanical characteristics of the layers was done by examining the microhardness using the HV0.3 method and tensile bond strength by tensile testing. The microstructures of the deposited layers were analyzed by means of optical microscopy (OM) and scanning electron microscopy (SEM). The results obtained showed that the tungsten coating consisted of well melted particles that interconnected and were overlapping, which shows a typical lamellar microstructure. Present in the microstructure are micro pores in very small proportion at the inter-lamellar boundaries. Tests have shown that layers of W coating deposited by plasma spray in inert gas shielding at low pressure have good mechanical properties and microstructure, which in the fully enables its use in exploitation.
PB  - Engineers Society for Corrosion
T2  - Materials Protection
T1  - [Characterization of vacuum plasma spray vps-w coating deposited on stainless steel substrates] [Karakterizacija vakuum plazma sprej vps-w prevlake deponovane na čeličnim podloga]
EP  - 112
IS  - 2
SP  - 106
VL  - 2021
DO  - 10.5937/zasmat2102106M
ER  - 

@article{
author = "Mrdak, Mihailo and Lačnjevac, Časlav and Rakin, Marko and Janaćković, Đorđe and Veljić, Darko",
year = "2011",
abstract = "In this paper, studied was the melting of W powder particles in plasma, their behavior at oxidation as well as the mechanism of hardening on the surface of the substrate. Tungsten coating layers were deposited with vacuum plasma spray technology (VPS) on the test specimens of steel Č.4171 (X15Cr13 EN10027). VPS technology has advantages over the APS technology due to decreased oxidation of melted powder particles, by producing a coating with a controlled proportion of micro pores and greater uniformity of the deposited layers. Evaluation of mechanical characteristics of the layers was done by examining the microhardness using the HV0.3 method and tensile bond strength by tensile testing. The microstructures of the deposited layers were analyzed by means of optical microscopy (OM) and scanning electron microscopy (SEM). The results obtained showed that the tungsten coating consisted of well melted particles that interconnected and were overlapping, which shows a typical lamellar microstructure. Present in the microstructure are micro pores in very small proportion at the inter-lamellar boundaries. Tests have shown that layers of W coating deposited by plasma spray in inert gas shielding at low pressure have good mechanical properties and microstructure, which in the fully enables its use in exploitation.",
publisher = "Engineers Society for Corrosion",
journal = "Materials Protection",
title = "[Characterization of vacuum plasma spray vps-w coating deposited on stainless steel substrates] [Karakterizacija vakuum plazma sprej vps-w prevlake deponovane na čeličnim podloga]",
pages = "112-106",
number = "2",
volume = "2021",
doi = "10.5937/zasmat2102106M"
}

Mrdak, M., Lačnjevac, Č., Rakin, M., Janaćković, Đ.,& Veljić, D.. (2011). [Characterization of vacuum plasma spray vps-w coating deposited on stainless steel substrates] [Karakterizacija vakuum plazma sprej vps-w prevlake deponovane na čeličnim podloga]. in Materials Protection
Engineers Society for Corrosion., 2021(2), 106-112.
https://doi.org/10.5937/zasmat2102106M

Mrdak M, Lačnjevac Č, Rakin M, Janaćković Đ, Veljić D. [Characterization of vacuum plasma spray vps-w coating deposited on stainless steel substrates] [Karakterizacija vakuum plazma sprej vps-w prevlake deponovane na čeličnim podloga]. in Materials Protection. 2011;2021(2):106-112.
doi:10.5937/zasmat2102106M .

Mrdak, Mihailo, Lačnjevac, Časlav, Rakin, Marko, Janaćković, Đorđe, Veljić, Darko, "[Characterization of vacuum plasma spray vps-w coating deposited on stainless steel substrates] [Karakterizacija vakuum plazma sprej vps-w prevlake deponovane na čeličnim podloga]" in Materials Protection, 2021, no. 2 (2011):106-112,
https://doi.org/10.5937/zasmat2102106M . .