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2009
Conference Paper
Titel
Ceramic components for automotive and railway applications made by two-components ceramic injection moulding
Abstract
Two-component ceramic injection moulding allows combining materials with different properties for a high throughput, net-shape production of multifunctional parts. However, the challenge of this shaping technology is adjusting the shrinkage of both components during injection moulding, co-debinding and co-sintering. Moreover, the materials chosen for the combination must have comparable thermal expansion coefficients and similar sintering behaviour. In the frame of a European project 14 partners from seven European countries are developing ceramic components for automotive and railway applications by two-component low pressure (2C-LCIM) and high pressure ceramic injection moulding (2C-CIM). The outcome of the project will be parts with complex geometry consisting of two ceramic materials with different mechanical, electrical or tribological properties like a ceramic glow plug for Diesel engines, a gear wheel for fuel pumps, a valve seat and braking pads for high-speed train brakes. Testing geometries and prototypical components for automotive and railway applications will be introduced including a description of the technological steps feedstock preparation, injection moulding, co-debinding, and co-sintering, such as non-destructive testing.