TY  - JOUR
AU  - Mrdak, Mihailo
AU  - Bajic, Darko
AU  - Veljić, Darko
AU  - Rakin, Marko
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4780
AB  - In this paper we will describe the process of the deposition of thick layers of VPS-Ti coating, which is used as a bonding layer for the upper porous Ti coatings on implant substrates. In order to deposit the powder, we used HoGANaS Ti powder labelled as AMPERIT 154.086-63 mu m. In order to test the mechanical properties and microstructure of the VPS-Ti coating, the powder was deposited on C 4171 (X15Cr13 EN10027) steel substrates. Mechanical tests of the microhardness of the coating were per-formed by the Vickers hardness test method (HV0.3) and tensile strength by measuring the force per unit area (MPa). The micro-hardness of the coating is 159 HV0.3, which is consistent with the microstructure. The coating was found to have a good bond strength of 68 MPa. The morphology of the powder particles was examined on a scanning electron microscope. The microstructure of the coating, both when deposited and etched, was examined with an optical microscope and a scanning elec-tron microscope. By etching the coating layers, it was found that the structure is homogeneous and that it consists of a mixture of low-temperature and high-temperature titanium phases (alpha-Ti + beta-Ti). Our tests have shown that the deposited layers of Ti coating can be used as a bonding layer for porous Ti coatings in the production of implants.
T2  - Materiali in Tehnologije
T1  - Characterisation of biomedical titanium layers deposited by a vacuum plasma spray process
EP  - 236
IS  - 2
SP  - 231
VL  - 55
DO  - 10.17222/mit.2020.135
ER  - 

@article{
author = "Mrdak, Mihailo and Bajic, Darko and Veljić, Darko and Rakin, Marko",
year = "2021",
abstract = "In this paper we will describe the process of the deposition of thick layers of VPS-Ti coating, which is used as a bonding layer for the upper porous Ti coatings on implant substrates. In order to deposit the powder, we used HoGANaS Ti powder labelled as AMPERIT 154.086-63 mu m. In order to test the mechanical properties and microstructure of the VPS-Ti coating, the powder was deposited on C 4171 (X15Cr13 EN10027) steel substrates. Mechanical tests of the microhardness of the coating were per-formed by the Vickers hardness test method (HV0.3) and tensile strength by measuring the force per unit area (MPa). The micro-hardness of the coating is 159 HV0.3, which is consistent with the microstructure. The coating was found to have a good bond strength of 68 MPa. The morphology of the powder particles was examined on a scanning electron microscope. The microstructure of the coating, both when deposited and etched, was examined with an optical microscope and a scanning elec-tron microscope. By etching the coating layers, it was found that the structure is homogeneous and that it consists of a mixture of low-temperature and high-temperature titanium phases (alpha-Ti + beta-Ti). Our tests have shown that the deposited layers of Ti coating can be used as a bonding layer for porous Ti coatings in the production of implants.",
journal = "Materiali in Tehnologije",
title = "Characterisation of biomedical titanium layers deposited by a vacuum plasma spray process",
pages = "236-231",
number = "2",
volume = "55",
doi = "10.17222/mit.2020.135"
}

Mrdak, M., Bajic, D., Veljić, D.,& Rakin, M.. (2021). Characterisation of biomedical titanium layers deposited by a vacuum plasma spray process. in Materiali in Tehnologije, 55(2), 231-236.
https://doi.org/10.17222/mit.2020.135

Mrdak M, Bajic D, Veljić D, Rakin M. Characterisation of biomedical titanium layers deposited by a vacuum plasma spray process. in Materiali in Tehnologije. 2021;55(2):231-236.
doi:10.17222/mit.2020.135 .

Mrdak, Mihailo, Bajic, Darko, Veljić, Darko, Rakin, Marko, "Characterisation of biomedical titanium layers deposited by a vacuum plasma spray process" in Materiali in Tehnologije, 55, no. 2 (2021):231-236,
https://doi.org/10.17222/mit.2020.135 . .

TY  - JOUR
AU  - Mrdak, Mihailo
AU  - Bajic, Darko
AU  - Veljić, Darko
AU  - Rakin, Marko
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4750
AB  - Titanium dioxide (TiO2) is a multifunctional oxide that is an interesting material for many technological applications. This paper presents the mechanical properties and microstructure of TiO2 coatings resistant to dry sliding friction, corrosion, grain abrasion and erosion of particles at operating temperatures up to 540 degrees C. Layers of TiO2 coatings have been successfully deposited on test samples of steel C.4171 (X15Cr13 EN10027) using the atmospheric plasma spray (APS) process with plasma gun distances of 100 mm and 110 mm from the substrate. The APS procedure is used to produce relatively thick coatings of biocompatible and antibacterial TiO2 ceramic coatings for orthopedic applications. The coatings were deposited using the Plasmadyne company plasma spray system and Metco TiO2 powder, whose particles have an angular morphology produced by the melting and grinding cast blocks. The evaluation of the mechanical properties of the layers was made using the microhardness testing method HV0.3 and the tensile bond strength by tension testing. The analysis of the microstructure of the sprayed TiO2 coating layers was made in accordance with the Pratt & Whitney standard, using optical microscopy (OM). The morphology of the powder particles, the surface of the deposited coating and the coating fractures were examined by scanning electron microscopy. Tests have shown that the layers of TiO2 coatings deposited with a plasma spray distance of 110 mm have good mechanical properties and microstructure, which allow its use in the development of biomedical implants.
T2  - Materiali in Tehnologije
T1  - Mechanical and structural characteristics of atmospheric plasma-sprayed multifunctional tio2 coatings
EP  - 812
IS  - 6
SP  - 807
VL  - 54
DO  - 10.17222/mit.2020.052
ER  - 

@article{
author = "Mrdak, Mihailo and Bajic, Darko and Veljić, Darko and Rakin, Marko",
year = "2020",
abstract = "Titanium dioxide (TiO2) is a multifunctional oxide that is an interesting material for many technological applications. This paper presents the mechanical properties and microstructure of TiO2 coatings resistant to dry sliding friction, corrosion, grain abrasion and erosion of particles at operating temperatures up to 540 degrees C. Layers of TiO2 coatings have been successfully deposited on test samples of steel C.4171 (X15Cr13 EN10027) using the atmospheric plasma spray (APS) process with plasma gun distances of 100 mm and 110 mm from the substrate. The APS procedure is used to produce relatively thick coatings of biocompatible and antibacterial TiO2 ceramic coatings for orthopedic applications. The coatings were deposited using the Plasmadyne company plasma spray system and Metco TiO2 powder, whose particles have an angular morphology produced by the melting and grinding cast blocks. The evaluation of the mechanical properties of the layers was made using the microhardness testing method HV0.3 and the tensile bond strength by tension testing. The analysis of the microstructure of the sprayed TiO2 coating layers was made in accordance with the Pratt & Whitney standard, using optical microscopy (OM). The morphology of the powder particles, the surface of the deposited coating and the coating fractures were examined by scanning electron microscopy. Tests have shown that the layers of TiO2 coatings deposited with a plasma spray distance of 110 mm have good mechanical properties and microstructure, which allow its use in the development of biomedical implants.",
journal = "Materiali in Tehnologije",
title = "Mechanical and structural characteristics of atmospheric plasma-sprayed multifunctional tio2 coatings",
pages = "812-807",
number = "6",
volume = "54",
doi = "10.17222/mit.2020.052"
}

Mrdak, M., Bajic, D., Veljić, D.,& Rakin, M.. (2020). Mechanical and structural characteristics of atmospheric plasma-sprayed multifunctional tio2 coatings. in Materiali in Tehnologije, 54(6), 807-812.
https://doi.org/10.17222/mit.2020.052

Mrdak M, Bajic D, Veljić D, Rakin M. Mechanical and structural characteristics of atmospheric plasma-sprayed multifunctional tio2 coatings. in Materiali in Tehnologije. 2020;54(6):807-812.
doi:10.17222/mit.2020.052 .

Mrdak, Mihailo, Bajic, Darko, Veljić, Darko, Rakin, Marko, "Mechanical and structural characteristics of atmospheric plasma-sprayed multifunctional tio2 coatings" in Materiali in Tehnologije, 54, no. 6 (2020):807-812,
https://doi.org/10.17222/mit.2020.052 . .