Accession Number:

AD0256744

Title:

HIGH VISCOSITY REFRACTORY FIBERS

Descriptive Note:

Corporate Author:

BJORKSTEN RESEARCH FOUNDATION MADISON WIS

Personal Author(s):

Report Date:

1961-01-31

Pagination or Media Count:

1.0

Abstract:

A dispersion of finely divided metallic Cu in vitreous SiO2 markedly increased the viscosity of the latter. X-ray diffraction indicated that most of the Cu was present as metal no evidence of oxides of Cu was found. Measurements by a loop test method taken in conjunction with density indicate that the Youngs Modulus and ultimate tensile strength of SiO2 fiber may not be greatly altered by the presence of dispersed Cu. Ag, like Cu, dispersed readily in molten SiO2 to produce a higher viscosity material. Many other metals dispersed in SiO2 though not so readily as Cu and Ag, viscosity increases were noted in each case. The degree and uniformity of the mixing of Cu and SiO2 was considerably improved by construction of a mechanical device. A limited amount of SiO2 fiber containing dispersed Cu was drawn in the cane unit, admixture of the components being carried out simultaneously. Further preparations were made for investigating the effect of additive particle size on the viscosity of molten materials. A UTHOR

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE