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silicon dioxide |
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silicon dioxide: see silica silica or silicon dioxide, chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. ..... Click the link for more information. . silicon dioxide(SiO2) A hard, glassy mineral found in such materials as rock, quartz, sand and opal. In MOS chip fabrication, it is used to create the insulation layer between the metal gates of the top layer and the silicon elements below. |
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specialty silica (synthetic amorphous silicas or synthetically produced noncrystalline silicon dioxide) demand is forecast to expand 5. The phases of the 550[degrees]C composite coating include [gamma]-alumina and amorphous silica. The transparent solid is similar in structure to the ordinary amorphous silica in window glass. |
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