One. Scientific Foundations of Hollow Glass Microspheres 1.1 Composition and Microstructure 1.1.1 Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are mainly made up of borosilicate glass, a cloth renowned for its lower thermal growth coefficient and chemical inertness. The chemical makeup usually features silica (SiO₂, fifty-ninety%), alumina (Al₂O₃, ten-... https://followingbook.com/post/560846_metallic-boride-powders-are-very-unique-but-functional-new-ceramic-materials-the.html