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Ni‐Mo‐Cr Foams Processed by Casting Replication of Sodium Aluminate Preforms
Author(s) -
Boonyongmaneerat Y.,
Dunand D. C.
Publication year - 2008
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200700300
Subject(s) - materials science , porosity , aluminate , metal foam , superalloy , metallurgy , composite material , liquid metal , sodium aluminate , powder metallurgy , casting , replication (statistics) , metal , sintering , microstructure , aluminium , cement , statistics , mathematics
A Ni‐23Mo‐13Cr foam was created by liquid metal infiltration of a NaAlO 2 preform which was subsequently dissolved in acid. The foam exhibits 53 % open porosity and has markedly higher relative strength and stiffness than prior Ni‐superalloy foams produced by powder‐metallurgy. This improvement is assigned to the lack of porosity in the cast struts or walls of the foam.