Differential densification strengthening of glass-ceramics
    91.
    发明授权
    Differential densification strengthening of glass-ceramics 失效
    玻璃陶瓷的差示致密化强化

    公开(公告)号:US3931438A

    公开(公告)日:1976-01-06

    申请号:US413544

    申请日:1973-11-07

    摘要: A strengthened glass-ceramic laminated article having a compressively-stressed surface layer substantially enveloping a tensilely-stressed core portion, produced by choosing the core and surface layer compositions such that the core undergoes a net positive differential densification with respect to the surface layer as the result of phase transformations occurring in the laminated article during crystallization in situ. Such an article offers significant advantages over glass and glass-ceramic articles strengthened by prior art methods, including improved mechanical stability, thermal shock resistance, and, most importantly, excellent high temperature strength retention.

    摘要翻译: 一种强化的玻璃 - 陶瓷层压制品,其具有基本包围抗拉应力芯部分的压缩应力表面层,其通过选择芯和表面层组合物产生,使得芯相对于表面层经历净正的差示致密化 在原位结晶时在层压制品中发生相变的结果。 这样的物品比通过现有技术方法强化的玻璃和玻璃陶瓷制品具有显着的优点,包括改进的机械稳定性,耐热冲击性,最重要的是优异的高温强度保持。