Processing and Properties of Alumina‐Graphite Platelet Composites Journal Articles

abstract

• Fine‐grain Al2O3‐graphite platelet composites have been fabricated by both filter pressing and tape casting with up to 50 vol% of fine or coarse graphite flakes. Filter pressing behavior remains unchanged with coarse graphite flake additions. Strength of hot‐pressed specimens decreases from about 350 to about 50 MPa with 50 vol% graphite. Preliminary experiments indicate that platelet orientation has a significant effect on strength: Platelets oriented perpendicular to the fracture plane and face‐on to the crack front are about 20% weaker than composites with platelets oriented both perpendicular to the fracture plane and edge‐on to the crack front. This suggests that the flakes behave as oriented voids in the microstructure.

authors

• Kellett, Bruce J
• Wilkinson, David S

status

• published 

publication date

• May 1995

has subject area

• 0912 Materials Engineering (FoR)
• 0913 Mechanical Engineering (FoR)
• Materials (Science Metrix)

published in

• Journal of The American Ceramic Society  Journal

keywords

• Materials Science
• Materials Science, Ceramics
• Science & Technology
• Technology

Digital Object Identifier (DOI)

• 10.1111/j.1151-2916.1995.tb08469.x

start page

• 1198

end page

• 1200

volume

• 78

issue

• 5