The Secretary of State for Defence in Her Britannic Majesty's Government

The Secretary of State for Defence in Her Brittanic Majesty's Government

Peter G Partridge

Charles M Ward-Close

Garyth Hughes

Robert Lewis Bickerdike

William Norman Mair

David V Dunford

Harry Christopher Ranson

Andrew Wisbey

Douglas Clark

John Norman Eastabrook

CVD process for making a hollow diamond tube

Superplastic deformation of diffusion bonded aluminium structures

Titanium-based alloy produced by vapor quenching

Precursors for metal matrix composites are produced by coating a long fibre ceramic reinforcement with alternating layers of dissimilar species of matrix materials to an aggregate thickness sufficient to yield the intended matrix volume fraction in a consolidated product without additional material. This duplex coating of fibres is performed by vapor phase deposition comprising vapor condensation, sputtering or chemical vapor reaction. The precursor includes an aggregate coating of at least 5% of fibre diameter, preferably at least 20%. Various duplex systems are disclosed, each having one component significantly more frangible than the other to render damage tolerant properties to the resultant metal composite. Product materials are produced from the duplex matrix coated fibres by consolidation of an assembly of coated fibres under conditions of elevated temperature and pressure to cause inter-fibre matrix flow and bonding of matrix materials.

Method of making precursors and articles of ceramic-reinforced metal

A titanium based alloy compressor blade is given a wear-resistant portion such as a tip portion by producing an interfitting male/female joint between the blade and the wear-resistant portion in which the joint portion of the latter is produced with inwardly directed corrugations and the former is pressed at elevated temperature after assembly of the two parts so as to cause the material of the blade to flow into and conform to the shape of the latter and to produce a diffusion bond between the two parts. Interlayers may be used to improve chemical compatibility between the respective parts.

Titanium compressor blade having a wear-resistant portion

An aluminium alloy is provided which consists of 2 to 12% by weight of chromium, 0.2 to 3.0% by weight of iron, the balance being aluminium apart from minor proportions of impurities and incidental elements wherein most of the chromium is present as a metastable solution in the aluminium lattice which contains a precipitate phase of iron rich zones the major proportion of which have dimensions of 200A or less, the presence of large intermetallic particles, particularly at grain boundaries, being at a minimum. This alloy may be produced by an evaporation deposition process.

Aluminium alloys

Growing community of inventors

Bristol, United Kingdom

Peter G Partridge