Growing Single Crystal Corundum Tubes by Verneuil Technique in Stable Conditions

Autor:	T. A. Steriopolo, V. A. Borodin, Efim A. Brener, L. I. Chernishova, V. A. Tatarchenko
Rok vydání:	1982
Předmět:	Materials science Capillary action Corundum Crystal growth General Chemistry engineering.material Condensed Matter Physics Critical value Crystallography Heat flux Verneuil process engineering General Materials Science Tube (fluid conveyance) Composite material Single crystal
Zdroj:	Crystal Research and Technology. 17:1199-1207
ISSN:	1521-4079 0232-1300
DOI:	10.1002/crat.2170171004
Popis:	The authors analyze the process of corundum tube growth by modified Verneuil's method from the viewpoint of its stability. The article shows that the process is stable in the case of thin-walled tubes and becomes unstable when the tube wall thickness exceeds a certain critical value which is known to be below the capillary constant. The critical thickness of the tube wall grows with a decrease of the heat flux density differential from the burner along the furnace muffle and with an increase of the tube's outer radius. As a result of a process of crystal growth under preset conditions constant cross-section single crystaal corundum tubes have been obtained. [Russian text ignored]
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6755b9f7a39a839d1b0fcdda46272202 https://doi.org/10.1002/crat.2170171004 Zobrazit plný text záznamu Plný text