Accession Number : ADA183412

Title :   Thermal Decomposition of Nd3(+), Sr2(+) and Pb2(+) Exchanged Beta'' Aluminas,

Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Yang,D L ; Dunn,B ; Morgan,P E

PDF Url : ADA183412

Report Date : 01 Jul 1987

Pagination or Media Count : 18

Abstract : Powders of Nd3+, Sr2+, and Pb2+ Beta aluminas were prepared by ion exchange of Na+ beta alumina. On heating to temperatures ranging from 850 C to 1700 C, XRD analysis indicates that Nd3+, and Pb2+ beta aluminas start to decompose at around 1100C. Sr2+ beta alumina remains unaffected to temperatures of 1300 C. The mechanism of the decomposition process and the resultant phase trasformations are different for each case. Keywords: Beta Alumina, ion exchange, X ray diffraction, phase transformations, Neodymium, Strontium, Lead.

Descriptors :   *ALUMINUM OXIDES, *THERMAL DEGRADATION, ALUMINUM OXIDES, DECOMPOSITION, HEATING, ION EXCHANGE, NEODYMIUM, PHASE TRANSFORMATIONS, STRONTIUM, TEMPERATURE, X RAY DIFFRACTION, PYROLYSIS, NEODYMIUM, REPLACEMENT, METASTABLE ALLOYS, LEAD(METAL), LITHIUM, POWDER METALS

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE