This paper presents thermochemical synthesis of copper/alumina nanocomposites in a Cu-Al2O3 system with 1–2.5 wt.% of alumina and their characterization, which included: transmission electron microscopy: focused ion beam (FIB), analytical electron microscopy (AEM) and high resolution transmission electron microscopy (HRTEM). Thermodynamic analysis was used to study the formation mechanism of desirable products during drying, thermal decomposition and reduction processes. Upon synthesis of powders, samples were cold pressed (2 GPa) in tools dimension 8 × 32 × 2 mm and sintered at temperatures within the range 800–1000 °C for 15 to 120 min in a hydrogen atmosphere. Results of characterization showed that dispersion-strengthened compacts could be produced by sintering of thermo-chemically prepared Cu-Al2O3 powders with properties suitable for material application, such as a contact material exhibiting high strength and high electrical conductivity at the same time. Additional research was... carried out in order to analyze the application of the obtained nanocomposite powders for the synthesis of copper/alumina nanocomposites by a new method, which is a combination of a thermochemical procedure and mechanical alloying. The measured values of an electric conductivity and hardness were compared with ones in literature, confirming an advantage of the proposed combined strategy.
TY - JOUR
AU - Korać, Marija
AU - Kamberović, Željko
AU - Anđić, Zoran
AU - Stopić, Srećko
PY - 2020
UR - https://cherry.chem.bg.ac.rs/handle/123456789/4175
AB - This paper presents thermochemical synthesis of copper/alumina nanocomposites in a Cu-Al2O3 system with 1–2.5 wt.% of alumina and their characterization, which included: transmission electron microscopy: focused ion beam (FIB), analytical electron microscopy (AEM) and high resolution transmission electron microscopy (HRTEM). Thermodynamic analysis was used to study the formation mechanism of desirable products during drying, thermal decomposition and reduction processes. Upon synthesis of powders, samples were cold pressed (2 GPa) in tools dimension 8 × 32 × 2 mm and sintered at temperatures within the range 800–1000 °C for 15 to 120 min in a hydrogen atmosphere. Results of characterization showed that dispersion-strengthened compacts could be produced by sintering of thermo-chemically prepared Cu-Al2O3 powders with properties suitable for material application, such as a contact material exhibiting high strength and high electrical conductivity at the same time. Additional research was carried out in order to analyze the application of the obtained nanocomposite powders for the synthesis of copper/alumina nanocomposites by a new method, which is a combination of a thermochemical procedure and mechanical alloying. The measured values of an electric conductivity and hardness were compared with ones in literature, confirming an advantage of the proposed combined strategy.
PB - Multidisciplinary Digital Publishing Institute (MDPI)
T2 - Metals
T1 - Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites
VL - 10
IS - 6
SP - 719
DO - 10.3390/met10060719
ER -
@article{
author = "Korać, Marija and Kamberović, Željko and Anđić, Zoran and Stopić, Srećko",
year = "2020",
abstract = "This paper presents thermochemical synthesis of copper/alumina nanocomposites in a Cu-Al2O3 system with 1–2.5 wt.% of alumina and their characterization, which included: transmission electron microscopy: focused ion beam (FIB), analytical electron microscopy (AEM) and high resolution transmission electron microscopy (HRTEM). Thermodynamic analysis was used to study the formation mechanism of desirable products during drying, thermal decomposition and reduction processes. Upon synthesis of powders, samples were cold pressed (2 GPa) in tools dimension 8 × 32 × 2 mm and sintered at temperatures within the range 800–1000 °C for 15 to 120 min in a hydrogen atmosphere. Results of characterization showed that dispersion-strengthened compacts could be produced by sintering of thermo-chemically prepared Cu-Al2O3 powders with properties suitable for material application, such as a contact material exhibiting high strength and high electrical conductivity at the same time. Additional research was carried out in order to analyze the application of the obtained nanocomposite powders for the synthesis of copper/alumina nanocomposites by a new method, which is a combination of a thermochemical procedure and mechanical alloying. The measured values of an electric conductivity and hardness were compared with ones in literature, confirming an advantage of the proposed combined strategy.",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Metals",
title = "Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites",
volume = "10",
number = "6",
pages = "719",
doi = "10.3390/met10060719"
}
Korać, M., Kamberović, Ž., Anđić, Z.,& Stopić, S.. (2020). Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites. in Metals
Multidisciplinary Digital Publishing Institute (MDPI)., 10(6), 719.
https://doi.org/10.3390/met10060719
Korać M, Kamberović Ž, Anđić Z, Stopić S. Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites. in Metals. 2020;10(6):719.
doi:10.3390/met10060719 .
Korać, Marija, Kamberović, Željko, Anđić, Zoran, Stopić, Srećko, "Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites" in Metals, 10, no. 6 (2020):719,
https://doi.org/10.3390/met10060719 . .
