Phase Transformations in Lutetium Borides at Heating in Vacuum-Reference-Cited by-同舟云学术

Phase Transformations in Lutetium Borides at Heating in Vacuum

Published:2011-06 Issue: Volume:172-174 Page:464-469
ISSN:1662-9779
Container-title:Solid State Phenomena
language:
Short-container-title:SSP

Author:

Taran Anatoliy¹,Voronovich Daniel¹,Shitsevalova Natalya²,Levchenko Ganna³,Filipov Volodymyr²,Abashin Sergiy¹

Affiliation:

1. National Aerospace University “Kharkiv Aviation Institute”

2. National Academy of Sciences

3. Frantsevich Institute for Problems of Materials Science, Nasu

Abstract

The LuB12 ® LuB4 ® LuB2 phase transformations on annealing in vacuum (T=(1400÷1800) K, p < 10-2 Pa) are investigated with use of the parent single crystals. SEM and X-ray researches of the corresponding lutetium boride single crystals were carried out before and after their annealing. It is shown that the LuB12 → LuB4 phase transformation takes place in surface layer and transition region spreads inwards the single crystal bulk with time. According to the assessed Lu-B phase diagram the LuB4 phase transformation into other individual phases is impossible, and at first it is shown that under corresponding conditions the LuB4 → LuB2 spontaneous phase transformation takes place both on the surface and in the LuB4 single crystal bulk.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

Link

https://www.scientific.net/SSP.172-174.464.pdf

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