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Glass ceramic sintered product used as an insulating substrate in circuit boards consists of a gahnite crystal phase, a celsian crystal phase containing needle-like crystals and a further crystal phase
Glass ceramic sintered product used as an insulating substrate in circuit boards consists of a gahnite crystal phase, a celsian crystal phase containing needle-like crystals and a further crystal phase
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机译：在电路板中用作绝缘基板的玻璃陶瓷烧结产品由针铁矿晶相，包含针状晶体的硅藻土晶相和其他晶相组成
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摘要
Glass ceramic sintered product obtained by calcining a molded body made from a mixture of glass powder and ceramic powder consists of a gahnite crystal phase; a celsian crystal phase containing needle-like crystals with an aspect ratio of at least 3; and a crystal phase made from AlN, Si3N4, SiC, Al2O3, ZrO2, 3Al2O3.2SiO2 and/or Mg2SiO4 and having an open porosity of not more than 0.3%. An Independent claim is also included for a process for the production of a glass ceramic sintered product, comprising forming a glass powder containing (in wt.%) 10-35 SiO2, 1-20 Al2O3, 6-25 MgO and/or ZrO, 5-30 B2O3 and 10-40 BaO, mixing the glass powder with a ceramic powder in the form of AlN, Si3N4, SiC, Al2O3, ZrO2, 3Al2O3.2SiO2 and/or Mg2SiO4 in a weight ratio of 20-90: 80-10, molding into a molded body, and calcining at not more than 1000 deg C.
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机译：通过煅烧由玻璃粉末和陶瓷粉末的混合物制成的成型体而得到的玻璃陶瓷烧结体由钠钙石结晶相构成。包含针状晶体的长宽比至少为3的celsian晶相;由AlN，Si 3 N 4，SiC，Al 2 O 3，ZrO 2，3Al 2 O 3.2 SiO 2和/或Mg 2 SiO 4制成的开孔率为0.3％以下的晶相。还包括用于制造玻璃陶瓷烧结产品的方法的独立权利要求，该方法包括形成包含（以重量％计）10-35 SiO2、1-20 Al2O3、6-25 MgO和/或ZrO的玻璃粉末， 5-30 B2O3和10-40 BaO，以20-90：80-80的重量比将玻璃粉与陶瓷粉以AlN，Si3N4，SiC，Al2O3，ZrO2、3Al2O3.2SiO2和/或Mg2SiO4的形式混合10，成型为成型体，并在不超过1000℃下煅烧。
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