ABRASIVE TIPPED BLADES AND MANUFACTURE METHODS

• Main Authors: NARDI, AARON T, FAUGHNAN, PAUL R., JR, KLECKA, MICHAEL A
• Format: Patent
• Language: English; French
• Published: 18.09.2014
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINE PLANTS IN GENERAL; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WEAPONS

An article (104;140) has an airfoil (100). The airfoil has a leading edge (114), a trailing (116) edge, a pressure side (118), and a suction side (120) and the airfoil extends from a first end (110) to a tip (112). The article comprises an aluminum alloy or titanium alloy substrate (352) and a coating at the tip. The coating comprises a cold sprayed nickel or cobalt matrix (352) and an abrasive (354). La présente invention concerne un article (104 ; 140) ayant une surface portante (100). La surface portante a un bord d'attaque (114), un bord de fuite (116), un côté de pression (118) et un côté d'aspiration (120) et la surface portante s'étend d'une première extrémité (110) vers une pointe (112). L'article comprend un substrat en alliage d'aluminium ou en alliage de titane (352) et un revêtement au niveau de la pointe. Le revêtement comprend une matrice (352) de nickel ou de cobalt pulvérisée à froid et un abrasif (354).