The effect of varying Al 2 O 3 content on the crystallization and microstructure behavior of strontium containing glasses based on the system SrO·4MgO·Al 2 O 3 · 6SiO 2 ·2MgF 2 was investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The glass transition temperature (T g ) and first crystallization peak temperature (T p 1 ) reduced with decrease in the alumina content. Glasses with x≥1.5 exhibited a second crystallization peak temperature (T p 2 ). The first crystallization peak temperature (T p 1 ) corresponded to the formation of strontium fluorophlogopite and second crystallization peak temperature (T p 2 ) corresponded to the formation of strontium aluminum silicate. © 2013 Elsevier Ltd and Techna Group S.r.l.

A MALLIK

P KUNDU

A BASUMAJUMDAR

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

&nbsp;

The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

&nbsp;

It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Ceramics International

The effect of varying B 2 O 3 content on the crystallization and microstructure behavior of barium-containing glasses based on the system BaO·4 MgO· Al 2 O 3A·6 SiO 2A·2 MgF 2 was investigated by differential thermal analysis (DTA), X-ray diffraction, and scanning electron microscopy. Heat treatment of glass specimens in the form of fine powders in the range of 884°C-901°C led to the formation of barium fluorophlogopite. DTA study revealed that the glass transition temperature (T g) and crystallization peak temperature (T p) decreased by increasing B 2 O 3 content. It was also found that the higher the B 2 O 3 content, the higher the aspect ratio of fluorophlogopite crystal. © 2012 The American Ceramic Society.

Journal of the American Ceramic Society

Influence of B 2 O 3 on crystallization behavior and microstructure of mica glass-ceramics in the system BaOÂ·4 MgOÂ· Al 2 O 3AÂ·6 SiO 2AÂ·2 MgF 2

The influence of barium oxide, heat treatment time and temperature on the crystallization, microstructure and mechanical behavior of the system Ba x·K1-2x·Mg3·Al· Si3O10·F2 (where x = 0.0, 0.3 and 0.5) was investigated in order to develop novel, high strength and machinable glass-ceramics. Three glasses were prepared and characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscope (SEM) techniques and some mechanical testing methods. The crystallization kinetics of glass-ceramics was also studied. Activation energy and Avrami exponent calculated for the crystallization peak temperature (Tp) of three different glass batches. The Vickers hardness decreased slightly on formation of the potassium fluorophlogopite and barium fluorophlogopite phases, but decreased significantly on formation of an interconnected 'house of cards' microstructure. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Influence of barium oxide on the crystallization, microstructure and mechanical properties of potassium fluorophlogopite glass-ceramics

The effect of varying the fluorine content on the nucleation and crystallization behavior of barium containing glasses based on the system BaO·4MgO·Al2O3·6SiO2·2MgF2 was investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Both the crystallization peak temperature (Tp) and activation energies (E) decreased, the Avrami exponent (n) and pre-exponential factor (ν) increased. The results suggest that fluorine increases the rate of diffusion in the glass and promotes initial crystallization in barium fluorphlogopite glasses. © 2009 Elsevier Ltd and Techna Group S.r.l.

Influence of fluorine content on the crystallization and microstructure of barium fluorphlogopite glass-ceramics

Journal of Materials Science

Influence of alumina content on the nucleation crystallization and microstructure of barium fluorphlogopite glass-ceramics based on 8SiO2·YAl2O34MgO2MgF2BaO Part I Nucleation and crystallization behaviour

Influence of alumina content on the nucleation crystallization and microstructure of barium fluorphlogopite glass-ceramics based on 8SiO2·y Al2O3·4MgO·2MgF2·BaO Part II Microstructure, microhardness and machinability

Journal	Ceramics International
Publisher	-
ISSN	0272-8842