On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets

Abstract The present work reports real-time observations of the phenomena of partial crystallization of one of the glass-forming materials, namely enstatite (MgSiO3) from its supercooled liquid droplet. Initially, the molten droplet has been held under purely non-contact conditions using the aerodyn...

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Autores principales:	Ganesh Shete, Sushil Mishra, Shyamprasad Karagadde, Atul Srivastava
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e470ce83973a4f4f8a04edbeb88c587a
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spelling	oai:doaj.org-article:e470ce83973a4f4f8a04edbeb88c587a2021-12-02T18:18:59ZOn the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets10.1038/s41598-021-93135-62045-2322https://doaj.org/article/e470ce83973a4f4f8a04edbeb88c587a2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93135-6https://doaj.org/toc/2045-2322Abstract The present work reports real-time observations of the phenomena of partial crystallization of one of the glass-forming materials, namely enstatite (MgSiO3) from its supercooled liquid droplet. Initially, the molten droplet has been held under purely non-contact conditions using the aerodynamic levitation technique. The desired levels of undercooling have been achieved by deliberately making the levitated molten droplet touch a thin molybdenum wire and hence to initiate heterogeneous nucleation from the point of contact. Influence of thermal parameters like undercooling, cooling rates and recalescence on the process of crystallization is investigated. To understand and report the morphological properties and extent of crystallinity, the solidified enstatite samples have been characterized using optical/scanning electron microscopy (SEM) and X-ray diffraction (XRD) respectively, which confirmed the formation of partially crystallized enstatite spherules and fully glass spherules. XRD showed sharp peaks of enstatite, which confirm crystallinity and a halo profile confirms the amorphous phase of enstatite. Based on the observations of several experiments, we propose the effect of thermal parameters such as levels of undercooling and recalescence on the partial crystallization, as well as partial glass formation from the initially molten droplets of enstatite composition.Ganesh SheteSushil MishraShyamprasad KaragaddeAtul SrivastavaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ganesh Shete Sushil Mishra Shyamprasad Karagadde Atul Srivastava On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
description	Abstract The present work reports real-time observations of the phenomena of partial crystallization of one of the glass-forming materials, namely enstatite (MgSiO3) from its supercooled liquid droplet. Initially, the molten droplet has been held under purely non-contact conditions using the aerodynamic levitation technique. The desired levels of undercooling have been achieved by deliberately making the levitated molten droplet touch a thin molybdenum wire and hence to initiate heterogeneous nucleation from the point of contact. Influence of thermal parameters like undercooling, cooling rates and recalescence on the process of crystallization is investigated. To understand and report the morphological properties and extent of crystallinity, the solidified enstatite samples have been characterized using optical/scanning electron microscopy (SEM) and X-ray diffraction (XRD) respectively, which confirmed the formation of partially crystallized enstatite spherules and fully glass spherules. XRD showed sharp peaks of enstatite, which confirm crystallinity and a halo profile confirms the amorphous phase of enstatite. Based on the observations of several experiments, we propose the effect of thermal parameters such as levels of undercooling and recalescence on the partial crystallization, as well as partial glass formation from the initially molten droplets of enstatite composition.
format	article
author	Ganesh Shete Sushil Mishra Shyamprasad Karagadde Atul Srivastava
author_facet	Ganesh Shete Sushil Mishra Shyamprasad Karagadde Atul Srivastava
author_sort	Ganesh Shete
title	On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
title_short	On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
title_full	On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
title_fullStr	On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
title_full_unstemmed	On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
title_sort	on the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e470ce83973a4f4f8a04edbeb88c587a
work_keys_str_mv	AT ganeshshete onthephenomenaofpartialcrystallizationofhighlyundercooledmagnesiumsilicatemoltendroplets AT sushilmishra onthephenomenaofpartialcrystallizationofhighlyundercooledmagnesiumsilicatemoltendroplets AT shyamprasadkaragadde onthephenomenaofpartialcrystallizationofhighlyundercooledmagnesiumsilicatemoltendroplets AT atulsrivastava onthephenomenaofpartialcrystallizationofhighlyundercooledmagnesiumsilicatemoltendroplets
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On the phenomena of partial crystallization of highly undercooled magnesium silicate molten droplets

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