Detail publikace

Impact of high energy ball milling on densification behaviour of magnesium aluminate spinel evaluated by master sintering curve and constant rate of heating approach

TALIMIAN, A. POUCHLÝ, V. EL-MAGHRABY, H. MACA, K. GALUSEK, D.

Originální název

Impact of high energy ball milling on densification behaviour of magnesium aluminate spinel evaluated by master sintering curve and constant rate of heating approach

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The present study investigates the influences of high energy ball-milling on densification of a commercial sub-micron magnesium aluminate spinel powder. High energy milling decreases the crystallite size and modifies the particle size distribution of powder resulting in better compaction of green bodies. Milling, also, increases the number of structural defects. The concept of master sintering curve (MSC) and the constant rate of heating (CRH) approach were employed to evaluate the activation energy of sintering. It was demonstrated that, according to MSC, the milled samples exhibit lower densification activation energy compared to the as-received powder (530 kJ mol−1 vs 750 kJ mol−1). Analysing the densification using CRH approach reveals that the sintering activation energy of milled samples remains constant during the sintering process, while that of as-received samples increases with densification. The estimated activation energy using MSC method is thus an average value of the values measured over the whole process of sintering.

Klíčová slova

Magnesium aluminate spinel High energy milling Sintering Master sintering curve Constant rate of heating approach

Autoři

TALIMIAN, A.; POUCHLÝ, V.; EL-MAGHRABY, H.; MACA, K.; GALUSEK, D.

Vydáno

1. 12. 2019

ISSN

0272-8842

Periodikum

Ceramics International

Ročník

45

Číslo

17

Stát

Spojené království Velké Británie a Severního Irska

Strany od

23467

Strany do

23474

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S0272884219322461?via%3Dihub

BibTex

@article{BUT159367,
  author="Ali {Talimian} and Václav {Pouchlý} and H.F. {El-Maghraby} and Karel {Maca} and Dušan {Galusek}",
  title="Impact of high energy ball milling on densification behaviour of magnesium aluminate spinel evaluated by master sintering curve and constant rate of heating approach",
  journal="Ceramics International",
  year="2019",
  volume="45",
  number="17",
  pages="23467--23474",
  doi="10.1016/j.ceramint.2019.08.051",
  issn="0272-8842",
  url="https://www.sciencedirect.com/science/article/pii/S0272884219322461?via%3Dihub"
}