Powder Injection Moulding (PIM) of Mesophase Carbon with Water-Based Binders

Michael Gruhl; B. Derfuss; Christian Rottmair; Andreas Volek; Robert F. Singer

doi:10.4028/www.scientific.net/AST.45.711

Paper Titles

Synthesis and Photochemical Properties of White Calcia-Doped Ceria Nanoparticles via Soft Solution Processes
p.685

Structure of Yttrium Aluminium Garnet Obtained by the Glycothermal Method
p.691

Synthesis of Hexagonal Ferrites by Citric Complex Method
p.697

Near-Net-Shape Ceramics by Reactive Processing
p.701

Powder Injection Moulding (PIM) of Mesophase Carbon with Water-Based Binders
p.711

Electrophoretic Deposition as Shaping Technique - A CAM Approach
p.714

Free Form Fabrication of 3D-Ceramic Parts with InkJet-Printing
p.720

Kinetic Investigation of the Curing and Pyrolysis Procedures Used for the Preparation of Polymer-Derived Boron Nitride Fibres
p.726

Nanofibres of Ceramic Compounds by Electrospinning
p.735

HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 45Powder Injection Moulding (PIM) of Mesophase...

Powder Injection Moulding (PIM) of Mesophase Carbon with Water-Based Binders

Abstract:

Since there are no net-shape techniques for complex parts made of mesophase carbon available yet, this work focuses on a powder injection moulding (PIM) approach. The single biggest problem to overcome here is the overlap of debindering and pyrolysis/sintering of mesocarbon when using conventional binders, causing high porosity and cracks. Water-based binders with agar as gelling agent can avoid this problem effectively by removing the binder in an optimized drying step. The subsequent sintering can then be carried out at high heating rates, leading to better densification and good mechanical properties. Furthermore, the dependency of the rheological properties of the water-based feedstock on its water content is investigated.