EP 0161387 A3 19870527 - PROCESS FOR CHEMICALLY STRIPPING DIFFUSED ALUMINIUM COATINGS, AND ITS USE
Title (en)
PROCESS FOR CHEMICALLY STRIPPING DIFFUSED ALUMINIUM COATINGS, AND ITS USE
Publication
Application
Priority
DE 3414383 A 19840416
Abstract (en)
[origin: US4619707A] Aluminum diffusion layers are removed from work piece surfaces, especially compressor and turbine blades, by exposing the respective surface areas to an aqueous solution of nitrobenzenesulfonic acid preferably in combination with other components, such as sodium compounds. Depending on the thickness of the layer to be removed the exposure time is within the range of about 30 to 90 minutes at a temperature below about 50 DEG C.
IPC 1-7
IPC 8 full level
C23F 1/44 (2006.01)
CPC (source: EP US)
C23F 1/44 (2013.01 - EP US)
Citation (search report)
- [X] US 2649361 A 19530818 - RICHARD SPRINGER, et al
- [Y] FR 2198004 A1 19740329 - GEN ELECTRIC [US]
- [A] US 4282041 A 19810804 - CORK FRANK
- [A] US 3095380 A 19630625 - BENJAMIN ARDEN
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0161387 A2 19851121; EP 0161387 A3 19870527; DE 3414383 A1 19851017; DE 3414383 C2 19860904; JP S60224792 A 19851109; JP S6345462 B2 19880909; US 4619707 A 19861028
DOCDB simple family (application)
EP 85100926 A 19850130; DE 3414383 A 19840416; JP 339085 A 19850114; US 69148185 A 19850114