Premium
Phase Relationships in the System CaO—AI 2 O 3 —P 2 O 5
Author(s) -
STONE PHILIP E.,
EGAN EDWARD P.,
LEHR JAMES R.
Publication year - 1956
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.1151-2916.1956.tb15630.x
Subject(s) - eutectic system , phase diagram , ternary numeral system , crystallization , analytical chemistry (journal) , mineralogy , quenching (fluorescence) , ternary operation , chemistry , materials science , crystallography , phase (matter) , nuclear chemistry , microstructure , physics , fluorescence , organic chemistry , quantum mechanics , computer science , programming language , chromatography
Primary fields of crystallization in the system CaO‐Al 2 O 3 ‐P 2 O 5 at temperatures from 900° to 1600°C. were determined by the method of quenching. Three ternary eutectics were established: CaO·P 2 O 5 ‐Al 2 O 3 ·3P 2 O 5 ‐Al 2 O 3 ·P 2 O 5 , 2CaO·P 2 O 6 ‐CaO·P 2 O 5 ‐Al 2 O 3 ·P 2 O 5 , and 3CaO·P 2 O 6 ‐2CaO·P 2 O 5 ‐Al 2 O 3 ·P 2 O 5 . The rate of decomposition of Al 2 O 3 ·3P 2 O 5 was determined at several temperatures. The boundary was established between the field A1 2 O 3 ·P 2 O 5 , which covers about 35% of the ternary diagram, and the fields Al 2 O 3 ·3P 2 O 5 , 2CaO·P 2 O 5 , and CaO·P 2 O 5 . A portion of the Al 2 O 3 ·P 2 O 5 ‐3CaO·P 2 O 5 boundary also was established. A compound with the composition 2Al 2 O 3 ·3P 2 O 5 did not appear in the system. No calcium aluminum phosphates were found.