METHOD FOR PRODUCING A CERAMIC BODY IN THE FORM OF A PREFORM.
Номер патента: DE3873360T2
Опубликовано: 08-04-1993
Автор(ы): Laroche, Jr
Принадлежит: Lanxide Technology Co LP
Опубликовано: 08-04-1993
Автор(ы): Laroche, Jr
Принадлежит: Lanxide Technology Co LP
Реферат: A method of producing shaped, self-supporting ceramic bodies includes preparing a mold by applying a gas-permeable, conformable material (20) to a shape-defining surface of a shaped parent metal (10). The gas-permeable material (20), when set or stable, provides a mold with a shaped surface which is defined by, and is therefore substantially congruent to, the shape-defining surface. Upon heating, the parent metal (10) melts and flows from the mold into a receptacle without disturbing the mold. Oxidation reaction product is then grown by oxidation of the molten parent metal with a vapor-phase oxidant to form an oxidation reaction product which grows into the mold cavity and is shaped by it. A ceramic body is recovered from the mold and has substantially the same shape as the pattern section (12,14,18) of the original shaped parent metal (10).
Method for manufacturing powder metallurgical tooling
Номер патента: WO1998047833A9. Автор: Paul D Vawter. Владелец: Paul D Vawter. Дата публикации: 1999-05-06.