Publication detail

Densification of Magnesium Aluminate Spinel Using Manganese and Cobalt Fluoride as Sintering Aids

TALIMIAN, A. POUCHLÝ, V. MACA, K. GALUSEK, D.

Original Title

Densification of Magnesium Aluminate Spinel Using Manganese and Cobalt Fluoride as Sintering Aids

Type

journal article in Web of Science

Language

English

Original Abstract

Highly dense magnesium aluminate spinel bodies are usually fabricated using pressure-assisted methods, such as spark plasma sintering (SPS), in the presence of lithium fluoride as a sintering aid. The present work investigates whether the addition of transition metal fluorides promotes the sintering of MgAl2O4 bodies during SPS. At the same time, such fluorides can act as a source of optically active dopants. A commercial MgAl2O4 was mixed with 0.5 wt% of LiF, MnF2, and CoF2 and, afterwards, consolidated using SPS at 1400 degrees C. Although MnF2 and CoF2 promote the densification as effectively as LiF, they cause significant grain growth.

Keywords

MgAl2O4; lithium fluoride; cobalt fluoride; manganese fluoride; spark plasma sintering; grain growth

Authors

TALIMIAN, A.; POUCHLÝ, V.; MACA, K.; GALUSEK, D.

Released

1. 1. 2020

Publisher

MDPI

Location

BASEL

ISBN

1996-1944

Periodical

Materials

Year of study

13

Number

1

State

Swiss Confederation

Pages from

102-1

Pages to

102-10

Pages count

10

URL

https://www.mdpi.com/1996-1944/13/1/102

Full text in the Digital Library

http://hdl.handle.net/11012/193416