[Zhongbo.com] The main components of quartz glass and crystal are silica, but they are not identical.
Quartz glass is made by melting a variety of pure natural quartz (such as crystal, quartz sand, etc.). The coefficient of linear expansion is extremely small, which is 1/10-1/20 of ordinary glass, and has good thermal shock resistance. Quartz glass is a single-component amorphous material of silica. Its microstructure is a simple network composed of silica tetrahedral structural units. Due to the large chemical bond energy of Si-O, the structure is very tight, so quartz glass Has a unique performance.
Crystal is a rare mineral, a kind of gemstone, quartz crystal, belonging to the quartz family in mineralogy. The main chemical component is silica, and the chemical formula is SiO2. When the crystal of silica is perfect, it is crystal; the crystal is not perfect is quartz: silica gel is dehydrated and is agate; silica hydrogel is solidified and becomes opal; when silica crystal grains are less than a few microns, it is composed. Chalcedony, vermiculite, secondary quartzite.
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