EP 3464660 B1 20200708 - METHOD OF TREATING A WORKPIECE COMPRISING A TITANIUM METAL AND OBJECT
Title (en)
METHOD OF TREATING A WORKPIECE COMPRISING A TITANIUM METAL AND OBJECT
Title (de)
VERFAHREN ZUR BEHANDLUNG EINES WERKSTÜCKS MIT EINEM TITANMETALL UND OBJEKT
Title (fr)
PROCÉDÉ DE TRAITEMENT D'UNE PIÈCE DE FABRICATION COMPRENANT UN MÉTAL À BASE DE TITANE, ET OBJET
Publication
Application
Priority
- SE 1650705 A 20160523
- EP 2017062155 W 20170519
Abstract (en)
[origin: WO2017202728A1] Method of treating a workpiece (12) comprising a titanium metal, wherein a titanium metal surface layer of the workpiece is converted to titanium nitrides. The method comprises the following steps: a) heating the workpiece (12) to an initial nitriding temperature (Tn1) and b) subjecting said workpiece to one or more nitriding temperatures (Tn1, Tn2) for predetermined time(s) in a nitrogen containing gas (14) under high pressure at hot isostatic pressing (HIP) conditions for converting the titanium metal surface layer to a first layer portion consisting of titanium nitrides and a second layer portion comprising a nitrogen gradient in the titanium metal. The method further comprises c) quenching the workpiece (12) in the nitrogen containing gas (14) under high pressure at hot isostatic pressing (HIP) conditions, in order to strengthen the titanium metal below the in step b) formed first nitride layer portion.
IPC 8 full level
C22C 21/14 (2006.01); C22F 1/18 (2006.01)
CPC (source: EP SE US)
C22C 21/14 (2013.01 - EP US); C22F 1/002 (2013.01 - US); C22F 1/02 (2013.01 - EP US); C22F 1/183 (2013.01 - EP US); C23C 8/24 (2013.01 - EP SE US); C23C 28/042 (2013.01 - EP US); C23C 28/048 (2013.01 - EP US); C22F 1/002 (2013.01 - EP)
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)
WO 2017202728 A1 20171130; CN 109154040 A 20190104; CN 109154040 B 20191210; EP 3464660 A1 20190410; EP 3464660 B1 20200708; SE 1650705 A1 20171124; SE 540497 C2 20180925; US 2019292641 A1 20190926
DOCDB simple family (application)
EP 2017062155 W 20170519; CN 201780029549 A 20170519; EP 17727508 A 20170519; SE 1650705 A 20160523; US 201716302355 A 20170519