文献类型：专利

英文题名：Phosphate glass for optical and sealing glass production includes alkali metal and alkaline earth metal oxides and oxides of aluminum, boron and germanium

作者：CHENG J;LIANG W;ZHOU S

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1108279-C

公开日：2003-05-14

语种：英文

收录：DERWENT

摘要：NOVELTY - The phosphate glass includes three kinds of alkali metal oxides and mixture of CaO and BaO, so the migration of alkali metal ion can be stopped, and the chemical stability of the glass can be raised. Al2O3, B2O3 and GeO2 can also be added in a certain proportion, so as to further raise the chemical stability of the glass. USE - For making special optical glass with special refractive index and dispersion, and various sealing glasses. ADVANTAGE - The invented glass not only has a suitable thermal expansion coefficient and low transition temperature and softening temperature, but also it possesses excellent chemical stability to make it applicable to a precision die-pressing forming process.