Showing papers on "Ceramic matrix composite published in 1972"
TL;DR: In this paper, the fabrication, microstructure and some of the mechanical and thermal properties of a series of composites are described and the observed effects are discussed in terms of the volume fraction of fibre, the mismatch of thermal expansion coefficients between matrix and fibre and the nature of the interface.
Abstract: The fabrication, microstructure and some of the mechanical and thermal properties of a series of composites are described. The systems investigated were magnesia, alumina, soda-lime glass, borosilicate glass and a lithia alumino-silicate glass-ceramic incorporating high modulus, chopped carbon fibres and magnesia containing chopped, stabilized zirconia fibres. Fracture strengths were increased when the fibres were partially aligned, but decreased when the fibres were randomly oriented. In all cases, however, a substantial increase in work of fracture was observed compared to the non-reinforced matrices. The observed effects are discussed in terms of the volume fraction of fibre, the mismatch of thermal expansion coefficients between matrix and fibre and the nature of the interface.
156 citations
TL;DR: In this paper, the compatibility of carbon fibres with aluminium has been studied for the time and temperature ranges relevant to the fabrication of carbon/aluminium composites, and the compatibility has been shown to be robust to temperature variations.
27 citations
Patent•
07 Feb 1972
TL;DR: A PRECOMPRESSED CERAMIC SHEET MATERIAL SUITABLE FOR USE in LIGHT PERSONAL ARMOR APPLICATIONS, and PROCESSes for the Formation Threshold.
Abstract: A PRECOMPRESSED CERAMIC SHEET MATERIAL SUITABLE FOR USE IN LIGHT PERSONAL ARMOR APPLICATIONS, AND PROCESSES FOR THE FORMATION THEREOF. A FINE WIRE METALLIC NETWORK IS EMBEDDED IN A MATRIX OF CERAMIC MATERIAL AND HEATED TO AN ELEVATED TEMPERATURE. UPON COOLING, THE THERMAL CONTRACTION DIFFERENCES BETWEEN THE FINE WIRE AND THE CERAMIC MATRIX COMPRESSIVELY STRESSES THE CERAMIC MATRIX TO GREATLY INCREASE THE FRACTURE RESISTANCE AND STRENGTH OF THE CERAMIC SHEET MATERIAL.
9 citations