Accession Number : AD0745232

Title :   Properties of Glasses in the System SiO2-B203-BaO,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Mazurenko,V. D.

Report Date : 14 MAR 1972

Pagination or Media Count : 8

Abstract : The microhardnesses of the glasses were determined with a PMT-3 apparatus with 100 gram loads. Three parallel determinations were made for each sample to arrive at the average value. The microhardnesses of the glasses range from 440 to 560 kg/sq and increases with an increase in the SiO content. From the characteristics of the microhardnesses, the glasses can be placed in the category of the usual industrial compositions. The low coefficient of thermal expansion makes it possible to recommend individual compositions for production on the basis of the indicated system of heat-resistant glasses. (Author)

Descriptors :   (*GLASS, PHYSICAL PROPERTIES), HARDNESS, THERMAL EXPANSION, SILICON DIOXIDE, BORON COMPOUNDS, BARIUM COMPOUNDS, OXIDES, USSR

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE