TY  - JOUR
AU  - Zlatkov, B.S.
AU  - Nikolić, Maria Vesna
AU  - Zeljković, V.
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B
AU  - Aleksić, Obrad
PY  - 2011
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/502
AB  - The powder injection moulding (PIM) technology is lately becoming more and more significant due to complex design possibilities and good repeatability. This technology requires optimization of all steps starting with material and binder, injection, debinding and sintering parameters. Sintering is one of the key links in this technology. The powder injection moulding process is specific as during feedstock injection powder particles mixed into the binder do not come into mechanical contact. Shrinkage during sintering of PIM samples is high. In this work we have analyzed and modeled the sintering process of isotropic PIM samples of Sr-hexaferrite. The Master Sintering Curve (MSC) principle has been applied to analyze sintering of two types of PIM Sr-hexaferrite samples with completely removed binder and only the extraction step of the debinding procedure (thermal debinding proceeding simultaneously with sintering). Influence of the heating rate on resulting sample microstructures has also been analyzed. Influence of the sintering time and temperature was analyzed using three different phenomenological equations.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology
EP  - 20
IS  - 1
SP  - 9
VL  - 43
DO  - 10.2298/SOS1101009Z
ER  - 

@article{
author = "Zlatkov, B.S. and Nikolić, Maria Vesna and Zeljković, V. and Obradović, Nina and Pavlović, Vladimir B and Aleksić, Obrad",
year = "2011",
abstract = "The powder injection moulding (PIM) technology is lately becoming more and more significant due to complex design possibilities and good repeatability. This technology requires optimization of all steps starting with material and binder, injection, debinding and sintering parameters. Sintering is one of the key links in this technology. The powder injection moulding process is specific as during feedstock injection powder particles mixed into the binder do not come into mechanical contact. Shrinkage during sintering of PIM samples is high. In this work we have analyzed and modeled the sintering process of isotropic PIM samples of Sr-hexaferrite. The Master Sintering Curve (MSC) principle has been applied to analyze sintering of two types of PIM Sr-hexaferrite samples with completely removed binder and only the extraction step of the debinding procedure (thermal debinding proceeding simultaneously with sintering). Influence of the heating rate on resulting sample microstructures has also been analyzed. Influence of the sintering time and temperature was analyzed using three different phenomenological equations.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology",
pages = "20-9",
number = "1",
volume = "43",
doi = "10.2298/SOS1101009Z"
}

Zlatkov, B.S., Nikolić, M. V., Zeljković, V., Obradović, N., Pavlović, V. B.,& Aleksić, O.. (2011). Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 43(1), 9-20.
https://doi.org/10.2298/SOS1101009Z

Zlatkov B, Nikolić MV, Zeljković V, Obradović N, Pavlović VB, Aleksić O. Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology. in Science of Sintering. 2011;43(1):9-20.
doi:10.2298/SOS1101009Z .

Zlatkov, B.S., Nikolić, Maria Vesna, Zeljković, V., Obradović, Nina, Pavlović, Vladimir B, Aleksić, Obrad, "Analysis and Modeling of Sintering of Sr-hexaferrite Produced by PIM Technology" in Science of Sintering, 43, no. 1 (2011):9-20,
https://doi.org/10.2298/SOS1101009Z . .

TY  - JOUR
AU  - Zlatkov, B.S.
AU  - Mitrović, Nebojša S.
AU  - Nikolić, Maria Vesna
AU  - Maricic, Aleksa M
AU  - Danninger, H
AU  - Aleksić, Obrad
AU  - Halwax, E
PY  - 2010
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/375
AB  - In this work, manganese zinc ferrite components were manufactured by powder injection molding-PIM technology. A fine powder consisting of Mn1-xZnxFe2O4 with small addition of hematite alpha-Fe2O3 as used in mass ferrite production was mixed with an organic binder (Solvent System) to form ferrite feedstock for powder injection molding-PIM technology. Excess of Fe2O3 was present in the starting powder in order to suppress conversion of Fe3+ to Fe2+ ions which would lower the permeability. The ferrite feedstock was injected in a mold with a cavity shaped like a small cylinder with a hole on the main axis. Injection molded samples were then solvent and thermally debinded and sintered in different atmospheres: air, argon and nitrogen. The starting powder, injected green samples and sintered samples were characterized using X-ray diffractometry, scanning electron microscopy, thermogravimetry, differential thermal analysis as well as by magnetic measurements. Rietveld refinement of measured X-ray patterns was done to detect possible phase transformations of Fe2O3 to other iron oxides through reduction by binder residues (carbon) at elevated temperatures during thermal debinding and sintering. Finally, the magnetic properties were measured by hysteresis graph and mutually compared for the injected samples that were sintered in air, argon and nitrogen. The obtained magnetic characteristics where found to be comparable with commercial samples prepared by traditional sintering technology.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Science and Engineering B-Solid State Materials for Advanced Technology
T1  - Properties of MnZn ferrites prepared by powder injection molding technology
EP  - 222
IS  - 3
SP  - 217
VL  - 175
DO  - 10.1016/j.mseb.2010.07.031
ER  - 

@article{
author = "Zlatkov, B.S. and Mitrović, Nebojša S. and Nikolić, Maria Vesna and Maricic, Aleksa M and Danninger, H and Aleksić, Obrad and Halwax, E",
year = "2010",
abstract = "In this work, manganese zinc ferrite components were manufactured by powder injection molding-PIM technology. A fine powder consisting of Mn1-xZnxFe2O4 with small addition of hematite alpha-Fe2O3 as used in mass ferrite production was mixed with an organic binder (Solvent System) to form ferrite feedstock for powder injection molding-PIM technology. Excess of Fe2O3 was present in the starting powder in order to suppress conversion of Fe3+ to Fe2+ ions which would lower the permeability. The ferrite feedstock was injected in a mold with a cavity shaped like a small cylinder with a hole on the main axis. Injection molded samples were then solvent and thermally debinded and sintered in different atmospheres: air, argon and nitrogen. The starting powder, injected green samples and sintered samples were characterized using X-ray diffractometry, scanning electron microscopy, thermogravimetry, differential thermal analysis as well as by magnetic measurements. Rietveld refinement of measured X-ray patterns was done to detect possible phase transformations of Fe2O3 to other iron oxides through reduction by binder residues (carbon) at elevated temperatures during thermal debinding and sintering. Finally, the magnetic properties were measured by hysteresis graph and mutually compared for the injected samples that were sintered in air, argon and nitrogen. The obtained magnetic characteristics where found to be comparable with commercial samples prepared by traditional sintering technology.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Science and Engineering B-Solid State Materials for Advanced Technology",
title = "Properties of MnZn ferrites prepared by powder injection molding technology",
pages = "222-217",
number = "3",
volume = "175",
doi = "10.1016/j.mseb.2010.07.031"
}

Zlatkov, B.S., Mitrović, N. S., Nikolić, M. V., Maricic, A. M., Danninger, H., Aleksić, O.,& Halwax, E.. (2010). Properties of MnZn ferrites prepared by powder injection molding technology. in Materials Science and Engineering B-Solid State Materials for Advanced Technology
Elsevier Science Bv, Amsterdam., 175(3), 217-222.
https://doi.org/10.1016/j.mseb.2010.07.031

Zlatkov B, Mitrović NS, Nikolić MV, Maricic AM, Danninger H, Aleksić O, Halwax E. Properties of MnZn ferrites prepared by powder injection molding technology. in Materials Science and Engineering B-Solid State Materials for Advanced Technology. 2010;175(3):217-222.
doi:10.1016/j.mseb.2010.07.031 .

Zlatkov, B.S., Mitrović, Nebojša S., Nikolić, Maria Vesna, Maricic, Aleksa M, Danninger, H, Aleksić, Obrad, Halwax, E, "Properties of MnZn ferrites prepared by powder injection molding technology" in Materials Science and Engineering B-Solid State Materials for Advanced Technology, 175, no. 3 (2010):217-222,
https://doi.org/10.1016/j.mseb.2010.07.031 . .