Nikola Nedeljković
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Nikola Nedeljković has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Dana Vasiljević-Radović
Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
1 shared publication - Ivana O. Mladenović
University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Belgrade, Serbia
1 shared publication - Jelena S. Lamovec
University of Criminal Investigation and Police Studies,Department of Forensic Engineering,Belgrade,Serbia
1 shared publication - Marija M. Vuksanović
Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
1 shared publication - Milica Ž. Mušicki Bogdanović
University of Criminal Investigation and Police Studies, Cara Dušana Street 196, 11000 Belgrade, Serbia
1 shared publication - Radmila Jančić Heinemann
Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia
1 shared publication
Latest Publications
- Open Access
Tailoring Mechanical and Surface Properties of Epoxy Coatings with Synthesized Pigment Particles: Microhardness, Adhesion, and Wettability Studies
Epoxy resins are widely used in coatings and adhesives due to their strong adhesion and processability. In this study, epoxy-based coatings were prepared with two synthesized pigments: cobalt blue and chrome orange. The coatings were applied to aluminum, phosphor bronze, and brass substrates to evaluate mechanical and adhesive performance. Microhardness was analyzed using the Chen–Gao model to exclude substrate effects, while adhesion was assessed via parameter b. Pigment morphology strongly influenced the properties: Pb-orange exhibited hollow micro-tube structures, while Co-blue showed an irregular morphology. Results revealed that epoxy coatings on brass with Pb-orange pigment reached a hardness of 242.6 MPa, compared to 187.2 MPa for Co-blue, representing a 22.8% increase. Adhesion was superior in epoxy/Pb-orange, with values 1.3 times higher than epoxy/Co-blue and 1.8 times higher than neat epoxy on brass. However, pigments have no influence on the intrinsic hardness of the epoxy coating. The orange pigment in the epoxy impairs wetting resistance, while the blue pigmented epoxy coating becomes hydrophobic. In this way, in addition to colorizing epoxy coatings, multifunctional coatings with adjustable adhesion, free surface energy, and hardness are also obtained. These findings highlight the potential of pigment-modified coatings for tailored industrial applications, offering improved properties depending on pigment selection.
Open AccessTailoring Mechanical and Surface Properties of Epoxy Coatings with Synthesized Pigment Particles: Microhardness, Adhesion, and Wettability Studies
Epoxy resins are widely used in coatings and adhesives due to their strong adhesion and processability. In this study, epoxy-based coatings were prepared with two synthesized pigments: cobalt blue and chrome orange. The coatings were applied to aluminum, phosphor bronze, and brass substrates to evaluate mechanical and adhesive performance. Microhardness was analyzed using the Chen–Gao model to exclude substrate effects, while adhesion was assessed via parameter b. Pigment morphology strongly influenced the properties: Pb-orange exhibited hollow micro-tube structures, while Co-blue showed an irregular morphology. Results revealed that epoxy coatings on brass with Pb-orange pigment reached a hardness of 242.6 MPa, compared to 187.2 MPa for Co-blue, representing a 22.8% increase. Adhesion was superior in epoxy/Pb-orange, with values 1.3 times higher than epoxy/Co-blue and 1.8 times higher than neat epoxy on brass. However, pigments have no influence on the intrinsic hardness of the epoxy coating. The orange pigment in the epoxy impairs wetting resistance, while the blue pigmented epoxy coating becomes hydrophobic. In this way, in addition to colorizing epoxy coatings, multifunctional coatings with adjustable adhesion, free surface energy, and hardness are also obtained. These findings highlight the potential of pigment-modified coatings for tailored industrial applications, offering improved properties depending on pigment selection.