Global Patent Index - EP 2147985 B1

EP 2147985 B1 20130911 - Sintered acoustic and oscillation dampening material

Title (en)

Sintered acoustic and oscillation dampening material

Title (de)

Gesinterter schall- und schwingungsdämpfender Werkstoff

Title (fr)

Matière active frittée amortissant les oscillations et le son

Publication

EP 2147985 B1 20130911 (DE)

Application

EP 09009342 A 20090717

Priority

DE 102008034257 A 20080717

Abstract (en)

[origin: EP2147985A1] The sintered acoustic and vibration dampening substance comprises metal or metal alloy, which enables a carbide formation by chemical reaction, and carbon in the form of graphite, where the amount of the graphite is 50 vol.%. The portion of carbide contained in the substance is less than 35 vol.%. The substance has an E-module of 50 GPa and the product of the E-module has a value of 0.4 GPa with a geometrical-independent damping factor in an axial direction. The theoretical thickness of the substance is 80%. An independent claim is included for a method for preparing a substance.

IPC 8 full level

C22C 33/02 (2006.01); B22F 7/00 (2006.01); G10K 11/165 (2006.01)

CPC (source: EP)

B22F 3/23 (2013.01); C22C 1/055 (2013.01); G10K 11/165 (2013.01); B22F 2999/00 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

EP 2147985 A1 20100127; EP 2147985 B1 20130911; DE 102008034257 A1 20100121; DE 102008034257 B4 20111208

DOCDB simple family (application)

EP 09009342 A 20090717; DE 102008034257 A 20080717