This invention relates to a paper friction material and a method of manufacturing the same, wherein the paper friction material is configured such that dispersibility and bondability are increased between a filler and a matrix. The paper friction material which is suitable for use in a vehicle, includes a friction base including pulp and a coating layer formed on the friction base using a mixture of latex and a functional material. The OH reactive group of the pulp and the aromatic ring of the latex are hydrogen-bonded so that the friction base and the coating layer are coupled with each other.

A helicopter is described comprising a motor member comprising an output shaft and a first stator rotatably supporting the output shaft around a first axis; a main rotor adapted to provide the lift necessary for the support and the thrust necessary for the movement of the helicopter; a transmission interposed between the motor member and the main rotor; the transmission rotatable around a second axis and a second stator rotatably supporting the input shaft around the second axis; the helicopter also comprises a joint interposed between the first and second stator, angularly fixed with respect to the first axis, and configured to allow an inclination between the first and second stator in a plane parallel to said first axis; the joint comprises a first corrugated element made of an elastically deformable material, interposed between said first and second stator, and adapted to allow the inclination through elastic deformation.

An asbestos free friction material having at least one of the group consisting of inorganic, organic and metallic fibers, at least one binder, at least one friction modifier or lubricant and at least a filler or abrasive, wherein the binder is almost completely and exclusively inorganic and is constituted almost exclusively or exclusively by a hydrated geopolymer or a blend of hydrated geopolymers.

The present invention relates to a method for producing a disk carrier assembly (2), comprising the method steps: providing a disk carrier (18) with a tubular section (20), applying a liquid or viscous material (48) on the tubular section (20) to form a support ring (32) surrounding the tubular section (20), and curing the support ring (32). In addition, the present invention relates to a disk carrier assembly (2).

Provided is an alkali-metal titanate in which the content and adhesivity of the fibrous potassium titanate is significantly reduced. The alkali-metal titanate includes 0.5 mol to 2.2 mol of potassium oxide in terms of potassium atoms, 0.05 mol to 1.4 mol of sodium oxide in terms of sodium atoms, and 0 mol to 1.4 mol of lithium oxide in terms of lithium atoms relative to 1 mol of alkali-metal hexatitanate, in which a total content of potassium oxide in terms of potassium atoms, sodium oxide in terms of sodium atoms, and lithium oxide in terms of lithium atoms relative to 1 mol of alkali-metal hexatitanate is 1.8 mol to 2.3 mol; and the alkali-metal titanate has a single phase conversion ratio of 85% to 100%, a fiber ratio of 0% by volume to 10% by volume, and a moisture content of 0% by mass to 1.0% by mass.

A method of making a ceramic matrix composite (CMC) brake component may include the steps of applying a pressure to a mixture comprising ceramic powder and chopped fibers, pulsing an electrical discharge across the mixture to generate a pulsed plasma between particles of the ceramic powder, increasing a temperature applied to the mixture using direct heating to generate the CMC brake component, and reducing the temperature and the pressure applied to the CMC brake component. The ceramic powder may have a micrometer powder size or a nanometer powder size, and the chopped fibers may have an interphase coating.

The disclosure describes in some examples a technique that includes aligning a plurality of carbon preform segments in a staggered arrangement, where each carbon preform segment of the plurality carbon preform segment includes a carbon body including at least one of a plurality of carbon fibers or a carbon foam, and a silicon-based mixture including silicon particles. The techniques may include heating the staggered arrangement to react the silicon particles with the carbon body to bond the plurality of carbon preform segments together and form a ceramic matrix composite component.

The present invention addresses the problem of providing a disc brake pad friction material, which is capable of securing fade resistance and wear resistance while satisfying laws relating to copper component content and for which coating by electrostatic powder coating is favorable. As a means for solving the problem, a friction agent composition, which contains 0.3-5 weight % of flake graphite particles of 1-100 m mean particle diameter with respect to the total amount of the friction material composition as a lubricant and in which the total amount of copper components contained in the friction material composition is less than 5 weight % of the total amount of the friction material composition, is used. Preferably, the flake graphite particles are aggregates. It is also preferable that the friction material composition contains mica with a mean particle diameter of 100-400 m.

A method of making a ceramic matrix composite (CMC) brake component may include the steps of applying a pressure to a mixture comprising ceramic powder and chopped fibers, pulsing an electrical discharge across the mixture to generate a pulsed plasma between particles of the ceramic powder, increasing a temperature applied to the mixture using direct heating to generate the CMC brake component, and reducing the temperature and the pressure applied to the CMC brake component. The ceramic powder may have a micrometer powder size or a nanometer powder size, and the chopped fibers may have an interphase coating.

A friction material for a clutch pad comprising: a plurality of fibers; and, a filler material including at least 0.1% and at most 100% silica rich carrier particles by weight based on total weight of the filler; the silica rich carrier particles having: a median particle size of at least 0.1 m and at most 50 m; and, a median pore diameter of at least 0.1 and at most 10 m.