“…The typical quality problem is the poor antispalling property, 9 due to high melting temperature of alumina, strong ionic bond, low diffusion coefficient, low sintering temperature, and improper formulation. To lower the sintering temperature of the light weight bubble alumina ceramics and to improve the consistency of the strength and quality, great efforts have been made and huge research work have been done, 10–12 for example, optimizing binders and surface modification of bubble alumina, etc. In these papers, mechanical properties of the bubbles themselves, filling effect, and formulation of binders, manufacture process and microstructure were studied in detail.…”