Global Patent Index - EP 2202328 A1

EP 2202328 A1 20100630 - Process for obtaining protective coatings for high temperature with high roughness and coating obtained

Title (en)

Process for obtaining protective coatings for high temperature with high roughness and coating obtained

Title (de)

Verfahren zum Gewinnen von Beschichtungen zum Schutz gegen hohe Temperaturen und hohe Rauheit und gewonnene Beschichtung

Title (fr)

Processus pour obtenir un revêtement protecteur pour hautes températures avec rugosité élevée et revêtement obtenu

Publication

EP 2202328 A1 20100630 (EN)

Application

EP 08380344 A 20081226

Priority

EP 08380344 A 20081226

Abstract (en)

The invention describes a process which allows obtaining a protective coating against oxidation at high temperature comprising a layer of MCrAlY material wherein M is selected from the group consisting of Ni, Co, Fe and their mixtures, characterised by a high surface roughness in its outer part, and high density, cohesion and reduced oxidation in its inner part. The process comprises the thermal projection of MCrAIY-based powders by high frequency pulsed detonation techniques, at different projection distances, to form the compact and dense inner part and the rough outer part. The coatings obtained can be heat treated in an inert atmosphere and can be used as bonding for a thermal barrier layer.

IPC 8 full level

C23C 4/02 (2006.01); C23C 4/08 (2006.01); C23C 4/12 (2006.01); C23C 4/18 (2006.01); C23C 28/00 (2006.01)

CPC (source: EP)

C23C 4/02 (2013.01); C23C 4/073 (2016.01); C23C 4/08 (2013.01); C23C 4/12 (2013.01); C23C 4/126 (2016.01); C23C 4/18 (2013.01); C23C 28/3215 (2013.01); C23C 28/345 (2013.01); C23C 28/3455 (2013.01)

Citation (applicant)

Citation (search report)

  • [DXA] EP 1939317 A2 20080702 - UNITED TECHNOLOGIES CORP [US]
  • [X] US 2008199684 A1 20080821 - APTE PRASAD SHRIKRISNNA [US], et al
  • [A] WO 9313245 A1 19930708 - DETROIT DIESEL CORP [US]
  • [A] US 2008057214 A1 20080306 - FAGOAGA ALTUNA IGNACIO [ES], et al
  • [A] HIGUERA V ET AL: "Influence of the thermal-spray procedure on the properties of a CoNiCrAlY coating", SURFACE AND COATINGS TECHNOLOGY, ELSEVIER, AMSTERDAM, NL, vol. 200, no. 18-19, 8 May 2006 (2006-05-08), pages 5550 - 5556, XP024995689, ISSN: 0257-8972, [retrieved on 20060508]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2202328 A1 20100630

DOCDB simple family (application)

EP 08380344 A 20081226