초록 ▼

Composites in the form of a three-dimensional framework or skeleton of ceramic particles are formed by a low cost, low temperature sintering process which decomposes a pre-ceramic inorganic or organic precursor. Upon heating, preferably in air, the precursor decomposes to form a ceramic phase in the

Composites in the form of a three-dimensional framework or skeleton of ceramic particles are formed by a low cost, low temperature sintering process which decomposes a pre-ceramic inorganic or organic precursor. Upon heating, preferably in air, the precursor decomposes to form a ceramic phase in the form of necks between the individual ceramic particles. The properties of the resulting porous ceramic bodies can be modified, such as toughened by impregnation with monomers, oligomers or polymers which are polymerized or cured in situ. Such composites find use as cosmetic products or protheses for humans and animals, such as dental restoratives and bone implants. Methods of fabrication are disclosed which include the use of a pre-ceramic polymer as a binder for the ceramic particles which forms the necks of material between the individual ceramic particles upon firing.

대표청구항 ▼

A process for low temperature formation of porous ceramic-based composite materials comprising the following steps: (a) mixing a ceramic powder with an organometallic pre-ceramic precursor; (b) heating, at a temperature from about 500°C. to about 1000°C., the mixture of step (a) to form a porous bod

A process for low temperature formation of porous ceramic-based composite materials comprising the following steps: (a) mixing a ceramic powder with an organometallic pre-ceramic precursor; (b) heating, at a temperature from about 500°C. to about 1000°C., the mixture of step (a) to form a porous body of ceramic powder bonded by necks of ceramic material formed by heat decomposition of the pre-ceramic precursor.