首页>>国外专利>>Graded glass/ceramic/glass structures for damage resistant ceramic dental and orthopedic prostheses
| 专利名称： | Graded glass/ceramic/glass structures for damage resistant ceramic dental and orthopedic prostheses |
| 公开（告）号： | |
| 公开（公告）日： | 2008-09-04 00:00:00 |
| 申请（专利）号： | US2008213727 |
| 申请日： | 2007-11-20 00:00:00 |
| 发明（设计）人： | |
| (申请)专利权（人）： | ZHANG YU (US);KIM JAE-WON (US);THOMPSON VAN P (US) |
| 内容： | The present invention provides a functionally graded glass/ceramic/glass sandwich system especially useful in damage resistant, ceramic dental and orthopedic prosthesis. The functionally graded glass/substrate/glass composite structure comprises an outer (aesthetic) residual glass layer, a graded glass-ceramic layer, and a dense interior ceramic. The functionally graded glass/substrate/glass composite structure may further comprise a veneer on an exterior surface. The present invention also provides a method for preparing a functionally graded glass/ceramic/glass sandwich system. A powdered glass-ceramic composition or a glass tape is applied to the accessible surfaces of a dense alumina substrate to thereby substantially cover the substrate surfaces. The glass of the composition has a CTE similar to that of the substrate material. The glass-ceramic composition is infiltrated into the dense substrate by heating the assembly to temperatures 50-700 DEG C. below the sintering temperature of the substrate. |
发布日期：2008-12-03 11:00:00