1. Scientific Foundations Of Hollow Glass Microspheres 1.1 Composition and Microstructure one.one.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a material renowned for its very low thermal expansion coefficient and chemical inertness. The chemical makeup ordinarily incorporates silica (SiO₂, 50-90%), alumina (... https://gaming-walker.com/post/139862_sulfide-powder-refers-to-the-chemical-compounds-powder-with-large-families-of-in.html