Use of protective coatings in aero gas turbine engines
1986; Maney Publishing; Volume: 2; Issue: 3 Linguagem: Inglês
10.1179/mst.1986.2.3.290
ISSN1743-2847
Autores Tópico(s)nanoparticles nucleation surface interactions
ResumoAbstractAbstractThe various types of protective coating used in the turbine and combustor sections of gas turbine engines operating in aero environments are reviewed. Comments on experience in marine environments are included as appropriate. The factors affecting coating selection for turbine rotor blade applications are discussed, and service experience is reviewed. The influence of the blade operating environment is highlighted. Aluminide type coatings remain the most widely used and the improved performance arising from modifications in the chemical and physical characteristics of the coating is described. The most severe environments in either corrosive or mechanical terms have been found to require improved coatings, and experience with platinum aluminide and overlay coatings is discussed. Thermal barrier coatings have been standardized on some combustion liners for the past decade and component life has been significantly increased. More recent application of thermal barrier coats to stator vane platforms has necessitated the development of improved bond coats and ceramic overlays. For thermal barrier and corrosion resistant coatings, the emphasis continues to be on the use of the most cost effective coating system in service backed up by the continuing development of advanced coatings appropriate to envisaged future operating requirements.MST/292
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