Alumina/tungsten nanocomposites obtained by Spark Plasma Sintering
Source abstract
Abstract
In the present work, the parameters controlling the alumina/W nanopowders Spark Plasma Sintering (SPS) process are studied. The important and crucial role of C diffusion from the SPS die in the microstructure, fraction of porosity and new phases formation (W2C) is discussed. It is also pointed out the importance of the processing parameters of the starting powder on the density and mechanical properties of the final compacts. In this regard, dense alumina/nW compacts containing 4 vol.% W with a hardness value as high as 24.6 ± 0.9 GPa were obtained.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced materials and composites · Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (12)
Show source-provided references
1. The challenge of ceramic/metal microcomposites an nanocomposites10.1016/j.pmatsci.2006.09.003 ↗
2. Nanostructured materials – mind over matter10.1016/0965-9773(93)90058-J ↗
3. Kotek V. Metal ceramic Al2O3 – tungsten composites. Structural ceramics and composites. Euro-ceramics II, vol. II; 1993. p. 1685–90.
4. Epitaxial growth of tungsten nanoparticles on alumina and spinel surfaces10.1088/0957-4484/19/21/215605 ↗
5. Challenges and advances in nanocomposite processing techniques10.1016/j.mser.2006.11.002 ↗
6. Elastic plastic indentation in ceramics: a fracture toughness determination method10.1016/0272-8842(84)90005-1 ↗
7. Spark plasma sintering behaviour of nano-sized (Ba, Sr)TiO3 powders: determination of sintering parameters yielding nanostructured Ceramics10.1111/j.1551-2916.2006.01122.x ↗
8. Microstructural prototyping of ceramics by kinetic engineering: applications of spark plasma sintering10.1002/tcr.20043 ↗
9. Reed JS. Particle packing characteristics. Principles of ceramics processing. 2nd ed. Wiley Inter-Science; 2005:213–30 [chapter 13].
10. Joining of alumina ceramic by inducing localized reducing conditions10.1111/j.1151-2916.1987.tb04856.x ↗
11. Diamond-like hardening of alumina/Ni nanocomposites10.1002/adem.200700172 ↗
12. R-curve evaluation and bridging stress determination in alumina by compliance analysis10.1016/S0955-2219(02)00230-3 ↗