Premium
Production of Functionally Graded Materials from Electrochemically Modified Carbon Preforms
Author(s) -
Jedamzik Ralf,
Neubrand Achim,
Rödel Juergen
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01312.x
Subject(s) - materials science , microstructure , composite material , porosity , carbon fibers , yield (engineering) , reinforced carbon–carbon , functionally graded material , anode , material properties , metal , composite number , metallurgy , electrode , chemistry
A new process based on carbon as a precursor material has been applied successfully to the production of graded Al 2 O 3 /Al composites. For this purpose, distinct porosity gradients were introduced into carbon materials via anodic oxidation. The graded structure of the carbon preforms was replicated using two subsequent infiltration steps to yield fully dense Al 2 O 3 /Al functionally graded materials with an interpenetrating network microstructure and a continuous variation of metal content.