EP 3536827 A1 20190911 - SURFACE PROCESSING METHOD FOR TANTALUM SPINNING HEAD
Title (en)
SURFACE PROCESSING METHOD FOR TANTALUM SPINNING HEAD
Title (de)
OBERFLÄCHENVERARBEITUNGSVERFAHREN FÜR TANTALSPINNKOPF
Title (fr)
PROCÉDÉ DE TRAITEMENT DE SURFACE DESTINÉ À UNE TÊTE DE REPOUSSAGE DE TANTALE
Publication
Application
Priority
- CN 201710124797 A 20170303
- CN 201710587999 A 20170719
- CN 2018077938 W 20180302
Abstract (en)
The present invention relates to a surface treatment method of tantalum spinneret, wherein the method comprises the following steps: (a) forming a layer of TaOfilm on the tantalum spinneret; (b) optionally polishing: polishing a fiber outlet face of the tantalum spinneret treated in step (a) to remove the TaOfilm on a surface of the fiber outlet face; and (c) coating: subjecting the tantalum spinneret treated in step (b) to a coating treatment by a molten salt electrochemical method to form a film layer containing lithium-containing compound.
IPC 8 full level
C25D 11/26 (2006.01); D01D 4/02 (2006.01)
CPC (source: CN EP)
C23C 28/04 (2013.01 - EP); C23C 28/042 (2013.01 - CN EP); C25D 9/04 (2013.01 - CN); C25D 11/26 (2013.01 - CN EP); D01D 4/022 (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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3536827 A1 20190911; EP 3536827 A4 20200429; EP 3536827 B1 20220126; EP 3536827 B9 20220518; CN 108531906 A 20180914; CN 108531906 B 20200529; ES 2908746 T3 20220503; ES 2908746 T9 20220613; JP 2020509250 A 20200326; JP 6808848 B2 20210106
DOCDB simple family (application)
EP 18761041 A 20180302; CN 201710587999 A 20170719; ES 18761041 T 20180302; JP 2019545305 A 20180302