Accession Number : AD0608560

Title :   MGO-MGFE2O4 MICROSTRUCTURES.

Descriptive Note : Technical rept.

Corporate Author : MICHIGAN UNIV ANN ARBOR COLL OF ENGINEERING

Personal Author(s) : McCollister,Howard ; van Vlack,Lawrence H.

Report Date : NOV 1964

Pagination or Media Count : 12

Abstract : Magnesioferrite-periclase microstructures can be correlated to their thermal history. Grain boundary precipitation occurs at higher temperatures, whereas a Widmanstatten precipitation is favored at lower temperatures. Magnesiowustite which is cooled slowly through the solubility limit will first produce magnesioferrite at the grain boundary, followed by a Widmanstatten precipitate of magnesioferrite within the grains. Prolonged heat treatments at any temperature favor the spheroidization of the magnesioferrite within the periclase matrix. (Author)

Descriptors :   (*REFRACTORY MATERIALS, MICROSTRUCTURE), (*MAGNESIUM COMPOUNDS, OXIDES), (*SOLID SOLUTIONS, MAGNESIUM COMPOUNDS), PHASE STUDIES, GRAIN BOUNDARIES, FERRITES, IRON COMPOUNDS, SOLUBILITY, MIXTURES

Distribution Statement : APPROVED FOR PUBLIC RELEASE