摘要:
A ceramic article is electrophoretically slip-cast by placing an aqueous suspension of a ceramic material in a multi-part mould, each part of which has an electrically conductive porous carbonaceous operative surface conforming to the desired outside surface of a respective part of the article, the carbonaceous component of the surface region being made of particles of from 70 µm to 200 µm maximum diameter, the parts of the mould being electrically insulated from one another, each part being intermittently made anodic with respect to the suspension, at least one part at any time being cathodic (except for possible intervals when no part is anodic). Thus a model horse is made from the mould parts of Figure 4 which are electrically charged in the following sequence, 1 minute each phase and all repeated at least once:
摘要:
It has hitherto been difficult to achieve the even deposition of a cup-shaped body from slurry flowing around a mandrel. This specification discloses a deposition apparatus including control means providing a substantially uniform slurry flow rate over all surfaces of the mandrel to give uniform deposition.
摘要:
Jusqu'à présent, il a été difficle d'obtenir le dépôt régulier d'un corps évasé, à partir d'une boue s'écoulant autour d'un mandrin. Cette invention décrit un appareil de dépôt comprenant un moyen de commande assurant un débit de boue sensiblement uniforme sur toutes les surfaces du mandrin, afin de donner un dépôt uniforme.
摘要:
A ceramic article is electrophoretically slip-cast by placing an aqueous suspension of a ceramic material in a multi-part mould, each part of which has an electrically conductive porous carbonaceous operative surface conforming to the desired outside surface of a respective part of the article, the carbonaceous component of the surface region being made of particles of from 70 µm to 200 µm maximum diameter, the parts of the mould being electrically insulated from one another, each part being intermittently made anodic with respect to the suspension, at least one part at any time being cathodic (except for possible intervals when no part is anodic). Thus a model horse is made from the mould parts of Figure 4 which are electrically charged in the following sequence, 1 minute each phase and all repeated at least once: