Detail publikace

High-energy ball milling and spark plasma sintering of molybdenum - lanthanum oxide (Mo-La2O3) and molybdenum - lanthanum zirconate (Mo-La2Zr2O7) composite powders

ČELKO, L. TKACHENKO, S. CASAS LUNA, M. DYČKOVÁ, L. BEDNAŘÍKOVÁ, V. REMEŠOVÁ, M. KOMAROV, P. DEÁK, A. BALÁŽ, M. CRAWFORD, D. DÍAZ DE LA TORRE, S. BODOKI, E. CIHLÁŘ, J.

Originální název

High-energy ball milling and spark plasma sintering of molybdenum - lanthanum oxide (Mo-La2O3) and molybdenum - lanthanum zirconate (Mo-La2Zr2O7) composite powders

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The current study is focused on the preparation of Mo-10 vol%La2O3 and Mo-10 vol% La2Zr2O7 composite powders via low- and high-energy ball milling approaches as potential candidates for near-future high-temperature structural applications. The mechanical milling parameters play a critical role on the final powder's microstructure. When using the high-energy milling mode (using 800 rpm, ball-to-powder ratio (BPR) 100: 6), the homogeneous powder agglomerates are formed with refined laminated microstructure and more uniform ceramic phase distribution in both Mo-La2O3 and Mo-La2Zr2O7 systems compared to the powders produced by means of the low-energy milling mode (using 350 rpm, BPR 100: 6), where inhomogeneous powder mixture with less embedding of ceramic phases into Mo agglomerates was obtained. This study also focuses on the evaluation of high-temperature phase and microstructural stability of the produced composite powders treated at the temperature of 1300 degrees C under the different gaseous environments, including ambient, inert and reducing atmospheres. The Mo-10 vol% La2Zr2O7 composite powder exhibited better thermal stability during the high-temperature exposure in all tested atmospheres in comparison with the Mo-La2O3 composite powder, since it revealed less intensive formation of the intermediate phases, such as lanthanum oxymolybdates. Therefore, the Mo-10 vol%La2Zr2O7 composite powder was used further for consolidation by means of spark plasma sintering at 1600 degrees C. The successful production of Mo-La2Zr2O7 composite with homogeneous distribution of ceramic phase, the grain size about of 5 mu m, and hardness of 3.4 GPa was not reported so far.

Klíčová slova

Molybdenum; Lanthanum oxide; Lanthanum zirconium oxide; High-energy milling; Thermal stability; Spark plasma sintering

Autoři

ČELKO, L.; TKACHENKO, S.; CASAS LUNA, M.; DYČKOVÁ, L.; BEDNAŘÍKOVÁ, V.; REMEŠOVÁ, M.; KOMAROV, P.; DEÁK, A.; BALÁŽ, M.; CRAWFORD, D.; DÍAZ DE LA TORRE, S.; BODOKI, E.; CIHLÁŘ, J.

Vydáno

1. 1. 2022

Nakladatel

Elsevier

Místo

OXFORD

ISSN

0263-4368

Periodikum

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS

Ročník

102

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

13

Strany počet

13

URL

https://www.sciencedirect.com/science/article/pii/S0263436821002493

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203541

BibTex

@article{BUT176090,
  author="Ladislav {Čelko} and Serhii {Tkachenko} and Mariano {Casas Luna} and Lucie {Dyčková} and Vendula {Bednaříková} and Michaela {Remešová} and Pavel {Komarov} and Andréa {Deák} and Matej {Baláž} and Deborah E. {Crawford} and Sebastian {Díaz de la Torre} and Ede {Bodoki} and Jaroslav {Cihlář}",
  title="High-energy ball milling and spark plasma sintering of molybdenum - lanthanum oxide (Mo-La2O3) and molybdenum - lanthanum zirconate (Mo-La2Zr2O7) composite powders",
  journal="INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS",
  year="2022",
  volume="102",
  number="1",
  pages="1--13",
  doi="10.1016/j.ijrmhm.2021.105717",
  issn="0263-4368",
  url="https://www.sciencedirect.com/science/article/pii/S0263436821002493"
}