Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling
2013
Autori
Ćosović, VladanPavlović, Miroslav M.
Cosovic, A.
Vulić, Predrag
Premović, Milena
Živković, Dragana
Talijan, Nadežda M.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92:8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces by conventional powder metallurgy method. The characterization of the prepared samples included microstructural analysis by XRD and SEM, as well as measurements of physical properties such as density, hardness and electrical conductivity. The results of X-Ray analysis point to reduction of crystallite size after milling of about ten times. Microstructures of sintered Ag-SnO2 and Ag-SnO2 In2O3 materials display very fine dispersion of the oxide components in silver matrix. Somewhat higher uniformity was obtained for Ag-SnO2 In2O3 material which was illustrated by results of SEM analysis and more consistent microhardness values. The obtained values of studied physical properties were found to be in accordance with observed higher dispersion ...of metal oxide particles and comparable to properties of commercial electrical contact materials of this type.
Metoda visokoenergetskog mehaničkog mlevenja je primenjena za pripremu elektrokontaktnih materijala na bazi Ag-SnO2 sa ciljem postizanja visokog stepena disperzije čestica metalnih oksida u srebrnoj matrici. Smeše prahova sastava Ag- SnO2 (92:8) i Ag-SnO2In2O3 (87.8:9.30:2.9) su posle mlevenja procesuirane konvencionalnim tehnikama metalurgije praha. Karakterizacija sinterovanih uzoraka obuhvatila je mikrostrukturnu analizu (XRD, SEM) kao i merenje važnijih fizičkih svojstava: gustina, tvrdoća i električna provodljivost. Rezultati XRD analize su pokazali značajno smanjenje veličine kristalita od oko deset puta. Mikrostrukturna analiza sinterovanih materijala ukazala je na veoma finu i uniformnu disperziju oksidnih komponenti u srebrnoj matrici. SEM mikrofotografije takođe pokazuju veću uniformnost mikrostrukture uzorka Ag-SnO2In2O3 što potvrđuju i ujednačenije vrednosti mikrotvrdoće dobijene za ovaj materijal. Izmerene vrednosti analiziranih fizičkih svojstava su u saglasnosti sa posti...gnutim većim stepenom disperzije čestica metalnih oksida u srebrnoj matrici i uporedive su sa svojstvima komercijalnih elektrokontaktnih materijala ovog tipa.
Ključne reči:
silver-metal oxide electrical contacts / high-energy Ball milling / powder metallurgy / microstructure / physical properties / srebro-metal oksidni električni kontakti / mlevenje u visoko-energetskom mlinu / metalurgija praha / mikrostruktura / fizička svojstvaIzvor:
Science of Sintering, 2013, 45, 2, 173-180Izdavač:
- International Institute for the Science of Sintering, Beograd
Finansiranje / projekti:
- Savremeni višekomponentni metalni sistemi i nanostrukturni materijali sa različitim funkcionalnim svojstvima (RS-MESTD-Basic Research (BR or ON)-172037)
- Racionalni dizajn i sinteza biološki aktivnih i koordinacionih jedinjenja i funkcionalnih materijala, relevantnih u (bio)nanotehnologiji (RS-MESTD-Basic Research (BR or ON)-172035)
- Razvoj tehnoloških procesa prerade nestandardnih koncentrata bakra u cilju optimizacije emisije zagađujućih materija (RS-MESTD-Technological Development (TD or TR)-34023)
DOI: 10.2298/SOS1302173C
ISSN: 0350-820X
WoS: 000323550700006
Scopus: 2-s2.0-84881519902
Institucija/grupa
IHTMTY - JOUR AU - Ćosović, Vladan AU - Pavlović, Miroslav M. AU - Cosovic, A. AU - Vulić, Predrag AU - Premović, Milena AU - Živković, Dragana AU - Talijan, Nadežda M. PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1186 AB - High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92:8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces by conventional powder metallurgy method. The characterization of the prepared samples included microstructural analysis by XRD and SEM, as well as measurements of physical properties such as density, hardness and electrical conductivity. The results of X-Ray analysis point to reduction of crystallite size after milling of about ten times. Microstructures of sintered Ag-SnO2 and Ag-SnO2 In2O3 materials display very fine dispersion of the oxide components in silver matrix. Somewhat higher uniformity was obtained for Ag-SnO2 In2O3 material which was illustrated by results of SEM analysis and more consistent microhardness values. The obtained values of studied physical properties were found to be in accordance with observed higher dispersion of metal oxide particles and comparable to properties of commercial electrical contact materials of this type. AB - Metoda visokoenergetskog mehaničkog mlevenja je primenjena za pripremu elektrokontaktnih materijala na bazi Ag-SnO2 sa ciljem postizanja visokog stepena disperzije čestica metalnih oksida u srebrnoj matrici. Smeše prahova sastava Ag- SnO2 (92:8) i Ag-SnO2In2O3 (87.8:9.30:2.9) su posle mlevenja procesuirane konvencionalnim tehnikama metalurgije praha. Karakterizacija sinterovanih uzoraka obuhvatila je mikrostrukturnu analizu (XRD, SEM) kao i merenje važnijih fizičkih svojstava: gustina, tvrdoća i električna provodljivost. Rezultati XRD analize su pokazali značajno smanjenje veličine kristalita od oko deset puta. Mikrostrukturna analiza sinterovanih materijala ukazala je na veoma finu i uniformnu disperziju oksidnih komponenti u srebrnoj matrici. SEM mikrofotografije takođe pokazuju veću uniformnost mikrostrukture uzorka Ag-SnO2In2O3 što potvrđuju i ujednačenije vrednosti mikrotvrdoće dobijene za ovaj materijal. Izmerene vrednosti analiziranih fizičkih svojstava su u saglasnosti sa postignutim većim stepenom disperzije čestica metalnih oksida u srebrnoj matrici i uporedive su sa svojstvima komercijalnih elektrokontaktnih materijala ovog tipa. PB - International Institute for the Science of Sintering, Beograd T2 - Science of Sintering T1 - Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling VL - 45 IS - 2 SP - 173 EP - 180 DO - 10.2298/SOS1302173C ER -
@article{ author = "Ćosović, Vladan and Pavlović, Miroslav M. and Cosovic, A. and Vulić, Predrag and Premović, Milena and Živković, Dragana and Talijan, Nadežda M.", year = "2013", abstract = "High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92:8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces by conventional powder metallurgy method. The characterization of the prepared samples included microstructural analysis by XRD and SEM, as well as measurements of physical properties such as density, hardness and electrical conductivity. The results of X-Ray analysis point to reduction of crystallite size after milling of about ten times. Microstructures of sintered Ag-SnO2 and Ag-SnO2 In2O3 materials display very fine dispersion of the oxide components in silver matrix. Somewhat higher uniformity was obtained for Ag-SnO2 In2O3 material which was illustrated by results of SEM analysis and more consistent microhardness values. The obtained values of studied physical properties were found to be in accordance with observed higher dispersion of metal oxide particles and comparable to properties of commercial electrical contact materials of this type., Metoda visokoenergetskog mehaničkog mlevenja je primenjena za pripremu elektrokontaktnih materijala na bazi Ag-SnO2 sa ciljem postizanja visokog stepena disperzije čestica metalnih oksida u srebrnoj matrici. Smeše prahova sastava Ag- SnO2 (92:8) i Ag-SnO2In2O3 (87.8:9.30:2.9) su posle mlevenja procesuirane konvencionalnim tehnikama metalurgije praha. Karakterizacija sinterovanih uzoraka obuhvatila je mikrostrukturnu analizu (XRD, SEM) kao i merenje važnijih fizičkih svojstava: gustina, tvrdoća i električna provodljivost. Rezultati XRD analize su pokazali značajno smanjenje veličine kristalita od oko deset puta. Mikrostrukturna analiza sinterovanih materijala ukazala je na veoma finu i uniformnu disperziju oksidnih komponenti u srebrnoj matrici. SEM mikrofotografije takođe pokazuju veću uniformnost mikrostrukture uzorka Ag-SnO2In2O3 što potvrđuju i ujednačenije vrednosti mikrotvrdoće dobijene za ovaj materijal. Izmerene vrednosti analiziranih fizičkih svojstava su u saglasnosti sa postignutim većim stepenom disperzije čestica metalnih oksida u srebrnoj matrici i uporedive su sa svojstvima komercijalnih elektrokontaktnih materijala ovog tipa.", publisher = "International Institute for the Science of Sintering, Beograd", journal = "Science of Sintering", title = "Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling", volume = "45", number = "2", pages = "173-180", doi = "10.2298/SOS1302173C" }
Ćosović, V., Pavlović, M. M., Cosovic, A., Vulić, P., Premović, M., Živković, D.,& Talijan, N. M.. (2013). Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling. in Science of Sintering International Institute for the Science of Sintering, Beograd., 45(2), 173-180. https://doi.org/10.2298/SOS1302173C
Ćosović V, Pavlović MM, Cosovic A, Vulić P, Premović M, Živković D, Talijan NM. Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling. in Science of Sintering. 2013;45(2):173-180. doi:10.2298/SOS1302173C .
Ćosović, Vladan, Pavlović, Miroslav M., Cosovic, A., Vulić, Predrag, Premović, Milena, Živković, Dragana, Talijan, Nadežda M., "Microstructure refinement and physical properties of Ag-SnO2 based contact materials prepared by high-energy ball milling" in Science of Sintering, 45, no. 2 (2013):173-180, https://doi.org/10.2298/SOS1302173C . .