Fastening member

Details Fastening member Fastening member

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 33/00 (2006.01) B32B 18/00 (2006.01) C04B 35/80 (2006.01)

Patent

CA 2166167

A fastening member is formed from a fibre-reinforced ceramic composite material, in which a ceramic material is reinforced with a plurality of inorganic fibres. The ceramic material is reinforced with a plurality of at least two oriented layers of inorganic long fibres, the ceramic material comprising glass- ceramics having a density ranging from 2.0 to 3.2 g/cm3, and being selected from the group consisting of Li2O-Al2-MgO-SiO2-Nb2O5, MgO-Al2-SiO2, BaO-MgO-Al2O3-SiO2, and CaO- Al2O2O3- SiO2. The inorganic long fibres have a mean diameter ranging from 5 to 200 µm, a mean length of at least 500 µm, and a density ranging from 2.2 to 3.2 g/cm3. The inorganic long fibres are located in the ceramic material such that, in the first oriented layer or layers, the inorganic long fibres are oriented in a first predetermined direction, and, in the second oriented layer or layers, the inorganic long fibres are oriented in a second direction which is different from the direction of orientation of the inorganic long fibres in the first oriented layer or layers. The first layer or layers is or are laminated alternately with the second layer or layers. The fastening member has a length and a width, the length extending in a longitudinal direction and including an external thread. The direction of orientation of the inorganic long fibres in the first oriented layer or layers ranges between 0° and 90° with respect to the longitudinal direction of the external thread. The direction of orientation of the inorganic long fibres in the second oriented layer or layers ranges between 0° and 90° with respect to the width of the fastening member.

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