Morphological Analyses of W/Cu Functional Graded Materials Obtained by Conventional and Spark Plasma Sintering

The paper presents the analysis of two compaction methods for obtaining W/Cu Functional Graded Materials (FGMs) consisting of three layers with the following compositions (% weight): first layer 80 W/20 Cu, second layer 75 W/25 Cu, and third layer 65 W/35 Cu. Each layer composition was obtained usin...

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Bibliographic Details
Published in:Materials 2023-06, Vol.16 (11), p.4126
Main Authors: Nicolicescu, Claudiu, Nicoară, Victor Horia, Pascu, Cristina Ileana, Gheorghe, Ștefan, Burada, Cristian Oliviu, Marinca, Traian Florin, Popa, Florin
Format: Article
Language:English
Subjects:
Chemical vapor deposition
Composition
Energy consumption
Lasers
Mechanical milling
Particle size
Plasma sintering
Raw materials
Sintering (powder metallurgy)
Spark plasma sintering
Ultrasonic imaging
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Summary:The paper presents the analysis of two compaction methods for obtaining W/Cu Functional Graded Materials (FGMs) consisting of three layers with the following compositions (% weight): first layer 80 W/20 Cu, second layer 75 W/25 Cu, and third layer 65 W/35 Cu. Each layer composition was obtained using powders obtained through mechanical milling. The two compaction methods were Spark Plasma Sintering (SPS) and Conventional Sintering (CS). The samples obtained after the SPS and CS were investigated from morphological (scanning electron microscopy-SEM) and compositional (energy dispersive X-ray spectroscopy-EDX) points of views. Additionally, the porosities and the densities of each layer in both cases were studied. It was found that the densities of the sample's layers obtained through SPS are superior to those obtained through CS. The research emphasizes that, from a morphological point of view, the SPS process is recommended for W/Cu-FGMs, having raw materials as fine-graded powders against the CS process.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16114126