Abstract
Graphite-Ni composites were fabricated by hot pressing from graphite powder electrolessplated with Ni and chopped carbon fiber as the raw materials. The relationship of chopped carbon fiber volume fraction (Vf) and Ni matrix volume fraction (VNi) on mechanical characteristics, friction and wear were reviewed. The results were as followed:
(1) Bending strength and Young's modulus increase with Vf at constant porosity. In case that porosity increases, these decrease with porosity.
(2) Friction coefficients of these composites increase with an increase of Vf with VNi more than 40 percents.
(3) Specific wear amount of these composites decrease by a chopped carbon fiber addition, and the decrease quantity is influenced by Vf, VNi.
