Alumina-chromia-metal (IV) oxide refractory fibers having a microcrystalline phase (US Patent 4125406)

Patent number: 4125406 Granted: 1978-11-14 Filed: 1974-09-03 Inventors: Harold G. Sowman (Maplewood, MN, US) Assignees: Minnesota Mining and Manufacturing Company (St. Paul, MN, US)

Abstract

Refractory fibers having a composition of 10-75% Al.sub.2 O.sub.3, 1-30% Cr.sub.2 O.sub.3 and 10-75% metal (IV) oxide selected from at least one of silica, titania, zirconia, and tin oxide and having at least one microcrystalline phase therein may remain strong, flexible, and continuous at