One. Scientific Foundations of Hollow Glass Microspheres one.1 Composition and Microstructure one.one.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a cloth renowned for its lower thermal expansion coefficient and chemical inertness. The chemical makeup ordinarily involves silica (SiO₂, fifty-90%), alumina (Al₂... https://www.friend007.com/post/560900_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html