Objective Research developments include:manufacture of the test coupons and polymet rods in the main aero bearing steels, M50 and Tl, and also the new carburising steel M50 NiL;design, manufacture and commissioning of component handling and beam scanning systems, including a dedicated ball manipulator for the uniform implantation of balls;successful implantation of all test coupons and polymet rods with the metallic species chromium and tantalum and dual implantation of yttrium plus nitrogen, each at 4 different dosage levels;corrosion testing of implanted test coupons using potentiometric polarisation, open circuit potential versus time, and cyclic voltametry. The results of the corrosion tests show a significant improvement in the corrosion resistance of M50, Tl and M50 NiL materials implanted with chromium and tantalum;characterisation of the implantation regimes using Rutherford backscattering (RBS) and nuclear reaction analysis (NRA) techniques.The main achievements include:development of an ion implantation technique for the implantation of bearing components with chromium, tantalum and yttrium plus nitrogen;testing of implanted components to assess and quantify benefits gained;proving the capability of maintaining these benefits under severe service conditions;identification of possible nondestructive techniques which can be used as quality assurance tools for ion implanted bearing components.Consequently, the service life and reliability of gas turbine bearings has been improved by increasing their corrosion resistance and their rolling contact fatigue life. Fields of science natural scienceschemical sciencesinorganic chemistrytransition metals Programme(s) FP1-BRITE - Multiannual research and development programme (EEC) in the fields of basic technological research and the applications of new technologies (BRITE), 1985-1988 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator RHP Bearings Ltd EU contribution No data Address Northern Road NG24 2JF Newark United Kingdom See on map Total cost No data Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all Danfysik A/S Denmark EU contribution No data Address 4040 Jyllinge See on map Total cost No data NATIONAL LABORATORY FOR ENGINEERING AND INDUSTRIAL TECHNOLOGY Portugal EU contribution No data Address Estrada do Paco do Lumiar 22 1649-038 LISBOA See on map Total cost No data Rolls Royce plc United Kingdom EU contribution No data Address 65 Buckingham Gate SW1E 6AT London See on map Total cost No data
