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1. (WO2015044025) BRAZING JOINING METHOD OF CNT ASSEMBLIES ON SUBSTRATES USING AN AT LEAST TERNARY BRAZING ALLOY; CORRESPONDING BRAZING MATERIAL AND DEVICE COMPRISING SUCH ASSEMBLY

Pub. No.:    WO/2015/044025    International Application No.:    PCT/EP2014/069904
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Fri Sep 19 01:59:59 CEST 2014
IPC: B23K 1/00
B23K 1/19
B23K 35/30
Applicants: EMPA EIDGENÖSSISCHE MATERIALPRÜFUNGS- UND FORSCHUNGSANSTALT
Inventors: LONGTIN, Rémi
ELSENER, Hans Rudolf
LEINENBACH, Christian
SANCHEZ-VALENCIA, Juan Ramon
Title: BRAZING JOINING METHOD OF CNT ASSEMBLIES ON SUBSTRATES USING AN AT LEAST TERNARY BRAZING ALLOY; CORRESPONDING BRAZING MATERIAL AND DEVICE COMPRISING SUCH ASSEMBLY
Abstract:
The present application describes a joining method of a Carbon Nanotube-assembly (1) on a substrate (2), showing a reproducible controlled joining with partly carbidization of the carbon nanotubes. To solve this problem, the Carbon Nanotube-assembly (1) is fixed to the substrate (2) by an active brazing process, with the steps of : melting and subsequent wetting and spreading of an active brazing alloy (3) in form of a at least ternary alloy, comprising an amount of copper and at least one carbide forming element with an amount of at least lwt% onto the substrate (2), contacting of the Carbon Nanotube-assembly (1) with the active brazing alloy (3) on the substrate (2), followed by a heating step of the components (1, 2, 3) in vacuum or inert gas atmosphere to temperatures above the solidus temperature of the active brazing alloy (3) and between 800°C and 900°C corresponding brazing material and assembly are also claimed.