The temperature range of melting of crystalline material

Autor:	R. N. Sobolev
Rok vydání:	2017
Předmět:	Phase transition Mineral engineering.material Atmospheric temperature range Crystal cell Crystal Crystallography Earth and Planetary Sciences (miscellaneous) engineering General Earth and Planetary Sciences Plagioclase Quartz Alkali feldspar Geology
Zdroj:	Doklady Earth Sciences. 473:367-370
ISSN:	1531-8354 1028-334X
DOI:	10.1134/s1028334x1703028x
Popis:	The first-order phase transition is accompanied by an increase in disordering. Defects and dislocations of the crystal cell decrease the temperature of the phase transition. Atoms located on the crystal surface get higher internal free energy first. Atoms located in different areas of the crystal have different numbers of saturated bonds. The lower the number of such bonds, the lower the temperature of the atom transition into the melt. The process of melting of two fractions (with sizes of 2 nm–0.1 mm and 1.5–2 mm) plagioclase, alkali feldspar, and quartz was studied at temperatures of 950, 1000, 1100, and 1200°C. Surface melting of all mineral fragments occurred at a temperature of 950°C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de6e63baf77f3928e7ed4d82d082a1e4 https://doi.org/10.1134/s1028334x1703028x Zobrazit plný text záznamu Plný text ve formátu PDF