C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 4/02 (2006.01) C23C 4/04 (2006.01)
Patent
CA 2188614
In a process for applying a metallic adhesion layer for thermally sprayed ceramic thermal barrier coatings (6) to metallic components (1), the surface which is to be coated being cleaned in a first process step, so that the metallic surface is free of grease and oxide, a binder (3) is applied to the metallic surface of the base material (2) in a second process step. Metallic adhesive powder (4) is applied uniformly to the binder (3) in a third process step and solder powder (5), which has a smaller particle size than the adhesive powder (4), is applied uniformly to the binder (3) in a fourth process step. After drying the binder (3), a heat treatment is carried out for the purpose of soldering. The adhesion layers produced in this way are rough and provide a considerable positive lock for the ceramic thermal barrier coatings (6) which are to be sprayed thereon.
Abb Research Ltd.
Alstom (switzerland) Ltd.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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