EP 3266902 B1 20200101 - OXIDE FILM REMOVAL METHOD
Title (en)
OXIDE FILM REMOVAL METHOD
Title (de)
OXIDFILMENTFERNUNGSVERFAHREN
Title (fr)
PROCÉDÉ DE RETRAIT DE FILM D'OXYDE
Publication
Application
Priority
- JP 2015096027 A 20150508
- JP 2016063267 W 20160427
Abstract (en)
[origin: EP3266902A1] An oxide film removal method that is a method for removing an oxide film 20 on the surface of a superalloy part 1 that contains a first metal, which is a base metal, and a second metal that differs from the first metal. The oxide film removal method is provided with a step for placing the superalloy part 1 inside a heating chamber 50, a reducing step for reducing oxides of the base metal to the base metal by heating the interior of the heating chamber 50 while maintaining a reducing gas atmosphere or a vacuum atmosphere, and an acid treatment step for applying an acid solution on the superalloy part 1 after the reducing step. The method effectively removes an oxide film on the surface of a superalloy without using highly toxic gaseous fluoride.
IPC 8 full level
C23F 1/00 (2006.01); C23F 1/28 (2006.01); C23G 5/00 (2006.01)
CPC (source: EP US)
C23F 1/00 (2013.01 - US); C23F 1/28 (2013.01 - EP US); C23G 1/10 (2013.01 - EP); C23G 1/125 (2013.01 - EP); C23G 5/00 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3266902 A1 20180110; EP 3266902 A4 20180214; EP 3266902 B1 20200101; CA 2982720 A1 20161117; CA 2982720 C 20200721; ES 2773110 T3 20200709; JP 2016211039 A 20161215; JP 6508823 B2 20190508; US 2018135186 A1 20180517; WO 2016181848 A1 20161117
DOCDB simple family (application)
EP 16792573 A 20160427; CA 2982720 A 20160427; ES 16792573 T 20160427; JP 2015096027 A 20150508; JP 2016063267 W 20160427; US 201615572368 A 20160427