Scientists develop 'unbreakable' glass almost as tough as steel

Japanese researchers have developed a new type of glass almost as hard as steel, a breakthrough that could lead to the development of substantially tougher windows and tableware. “We will establish a way to mass-produce the new material shortly,” said Atsunobu Masuno, an assistant professor at the University of Tokyo’s Institute of Industrial Science. “We are looking to commercialize the technique within five years.” Oxide glass mainly consists of silicon dioxide, with its strength boosted by mixing in alumina, an oxide of aluminum. But it had been difficult for scientists to form glass containing a large amount of alumina because the oxide causes crystallization when the glass comes into contact with its container.”