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1. 发明授权

US5922271A Method for the manufacture of dense-sintered glass ceramic moldings 失效
标题翻译：致密烧结玻璃陶瓷模制品的制造方法
公开(公告)号：US5922271A
公开(公告)日：1999-07-13
申请号：US868578
申请日：1997-06-04
申请人： Wolfgang Semar , Janusz Zborowski , Wolfgang Pannhorst , Waldemar Weinberg , Klaus Mirsch , Michael Dunkl , Bartolome Aloy , Werner Waidhas , Monika Burkner
发明人： Wolfgang Semar , Janusz Zborowski , Wolfgang Pannhorst , Waldemar Weinberg , Klaus Mirsch , Michael Dunkl , Bartolome Aloy , Werner Waidhas , Monika Burkner
IPC分类号： C03B19/06 , C03C3/083 , C03C10/00 , C03C10/12 , B28B1/26
CPC分类号： C03C10/0027
摘要： A method for the manufacture of dense-sintered glass-ceramic shaped objects which have a coefficient of thermal expansion, .alpha., of -0.5.times.10.sup.-6 /K to 1.8.times.10.sup.-6 /K in the range between 20.degree. C. and 700.degree. C. whereby ceramizable glass powder and/or glass-ceramic powder from the system Li.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2 is slip-cast by means of porous molds, dried, pretempered if necessary at temperatures up to 600.degree. C., vitrified and then sintered until the sintering temperature is reached up to relative densities of greater than 0.96 and ceramized, and whereby the glass powder and/or the glass ceramic-powder is prepared in a first grain size fraction of less than 63 .mu.m, in particular less than 45 .mu.m, and in a second grain size fraction of less than 7 .mu.m, in a ratio of the fractions to one another between 2:1 and 4:1, to form a stable, pourable slurry. The method can be used for the manufacture of industrial ceramics, but also for the manufacture of complex-shaped, large-volume and thin-walled hollow containers, in particular for use as cooking utensils which are resistant to thermal shock, as well as for dinnerware, solid ceramic castings and composites.
摘要翻译：一种在20℃至700℃的范围内制造具有-0.5×10 -6 / K至1.8×10 -6 / K的热膨胀系数α的致密烧结玻璃 - 陶瓷成型物体的方法 C.由系统Li2O-Al2O3-SiO2的可陶瓷化玻璃粉末和/或玻璃陶瓷粉末通过多孔模具进行滑移浇铸，干燥，如果需要，在高达600℃的温度下进行预硫化，玻璃化，然后烧结直到烧结温度达到大于0.96的相对密度并陶瓷化，由此玻璃粉末和/或玻璃陶瓷粉末以小于63μm，特别是小于45μm的第一粒度级分制备 m，并且在小于7μm的第二粒度分数中，以2:1和4:1之间的馏分之间的比例，形成稳定的可倾倒浆料。该方法可用于工业陶瓷的制造，也可用于制造复杂形状的大容量和薄壁中空容器，特别是用作耐热冲击的炊具，以及用于餐具，固体陶瓷铸件和复合材料。

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