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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: Euro Pm 2014 Congress And Exhibition, Proceedings Título del capítulo: Mechanical properties of copper foams reinforced with alumina particles
Autores UNAM: ISMELI ALFONSO LOPEZ;
Autores externos: Idioma: InglésAño de publicación: 2014Palabras clave:
Alumina; Compression testing; Copper alloys; Foams; Mechanical properties; Metals; Powder metallurgy; Powder metals; Powders; Scanning electron microscopy; Volume fraction; Alumina particles; Alumina powder; Different sizes; Elastic modulus values; Green compacts; Metal foams; Space-holder method; Structural characteristics; Copper
Resumen:
This work concerns the influence of alumina particles on copper foams and their mechanical properties. Foams were produced with the space holder method. Green compacts were prepared from the mixtures of copper, space holder and alumina powders by applying a pressure of 200 MPa. Foams were successfully obtained with NaCl as the space holder (50 v/v%). The synthesis of copper foams was achieved under the conditions of (i) 790°C for 2 h and (ii) 850°C for 4 h. Alumina particles of two different sizes (1 and 0.01 µm) were tried in this work with different volume fractions (2 and 4 v/v%). The structural characteristics and mechanical properties of the foams were analyzed using optical, scanning electron microscopy and compression testing. The yield strength of the foam increased from 3 to 6 MPa when the volume fraction of alumina particles increased. Due to porosity, the elastic modulus values of the foams were decreased when compared with pure copper.
Entidades citadas de la UNAM:
Fuente:
ISBN: 9781899072446 Editorial: European Powder Metallurgy Association (EPMA)
