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Phase Relations in the System Al 2 O 3 –B 2 O 3 –Nd 2 O 3
Author(s) -
Ji Yangyang,
Liang Jingkui,
Chen Zhan,
Xie Sishen
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb06906.x
Subject(s) - ternary operation , ternary numeral system , phase (matter) , analytical chemistry (journal) , ternary compound , materials science , crystallography , phase transition , mineralogy , chemistry , inorganic chemistry , thermodynamics , physics , organic chemistry , computer science , programming language , chromatography
The phase relations at a temperature below “subsolidus” in the system Al 2 O 3 –B 2 O 3 –Nd 2 O 3 are reported. Specimens were prepared from various compositions of Al 2 O 3 , B 2 O 3 , and Nd 2 O 3 of purity 99.5%, 99.99%, and 99.9%, respectively, and fired at 1100°C. There are six binary compounds and one ternary compound in this system. The ternary compound, NdAl 3 (BO 3 ) 4 (NAB), has a phase transition at 950°C ± 15°C. The high‐temperature form of NAB has a second harmonic generation (SHG) efficiency of KH 2 PO 4 (KDP) of the order of magnitude of the form which has been used as a good self‐activated laser material, and the low‐temperature form of NAB has no SHG efficiency.