Cold Isostatic Pressing Ceramic

Morris in concise encyclopedia of advanced ceramic materials 1991.

Cold isostatic pressing ceramic.

The hip process subjects a component to both elevated temperature and isostatic gas pressure in a high pressure containment vessel. Ceramic forming processes may be classified as traditional die pressing cold isostatic pressing cip slip casting and extrusion or as new and emerging such as injection moulding and tape casting. Cold isostatic pressing cip is a manufacturing process for the consolidation of metal and ceramic powders. For metals around 100 theoretical density can be achieved while ceramic powders that are more difficult to compress can reach about 95 of theoretical density.

Hot isostatic pressing hip involves both temperature and pressure applied simultaneously to obtain fully dense. For decades cold isostatic pressing cip has been used successfully by manufacturers around the world. Cold isostatic pressing cip is applied to consolidate ceramic or refractory powders loaded into elastomeric bags. Cold isostatic pressing cip is a manufacturing process for the consolidation of metal and ceramic powders.

For metals around 100 theoretical density can be achieved while ceramic powders that are more difficult to compress can reach about 95 of theoretical density. Isostatic pressing also known as cold isostatic pressing and isopressing entails compacting a dry or semi dry powder in an elastomeric mold submersed in a pressurized liquid reed 1995 pp. Common applications for cold isostatic pressing include consolidation of ceramic powders compressing of graphite refractories and electrical insulators and other fine ceramics for dental and medical applications the technology is expanding into new applications such as pressing of sputtering targets coatings of valve parts in an engine to. Rolling machining or sintering.

Cip is used to consolidate metal and ceramic powders to make a green part that can be further treated i e. Cold isostatic pressing where a rubber bag is filled with ceramic powder sealed and subjected to hydrostatic pressure is a method of forming ceramic components with near net shape. Warm isostatic pressing wip differs from cip only in that shapes are pressed at warm temperature to about 100 c. The pressurizing gas most widely used is argon.

Hot isostatic pressing hip is a manufacturing process used to reduce the porosity of metals and increase the density of many ceramic materials. This improves the material s mechanical properties and workability.