| 摘要 |
<p>A method is disclosed for making a glass or ceramic product such as a glass core or cladding element of an optical waveguide preform by suspending a particulate oxide in a non-aqueous liquid vehicle to provide a stable fluid suspension of oxide particles and forming the suspension into the desired configuration; destabilizing and gelling the formed suspension by adding a gelling agent and drying the resulting gelled intermediate to provide an integral, essentially crack-free porous product having the configuration of the gelled intermediate; and finally consolidating the porous product by heating to sinter the porous product into a non-porous glass or ceramic product.</p> |
