Microstructure of Ti5Si3–TiC–Ti3SiC2 and Ti5Si3–TiC nanocomposites in situ synthesized by spark plasma sintering
- 1 October 2004
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 19 (10) , 3004-3008
Abstract
Nanostructured Ti5Si3–TiC–Ti3SiC2 and Ti5Si3–TiC composites were in situfabricated through the spark plasma sintering (SPS) technique using Ti and SiC powders as reactants. It was found that the composites could be prepared in arelatively short time (6 min at 1260 °C) above 98% theoretical density. The phase constituents and microstructures of the samples were analyzed by x-ray diffractionand observed by scanning electron microscopy. Transmission electron microscopywas used for detailed microstructural analysis. The results showed that the reaction products mainly consisted of Ti5Si3 and TiC phases or Ti5Si3, TiC and Ti3SiC2phases, depending on the molar ratio of reactants (Ti to SiC). The composites exhibited fine microstructure; TiC grain size was less than 200 nm. Fracturetoughness at room temperature was also measured by indentation tests.Keywords
This publication has 24 references indexed in Scilit:
- Fabrication and characterization of nano-SiC particles reinforced TiC/SiCnano compositesMaterials Letters, 2004
- Silicon Nitride–Silicon Carbide Nancocomposites Fabricated by Electric‐Field‐Assisted SinteringJournal of the American Ceramic Society, 2003
- Microstructure and mechanical properties of in situ produced Ti5Si3/TiC nanocompositesJournal of the European Ceramic Society, 2002
- Cyclic Fatigue‐Crack Growth and Fracture Properties in Ti 3 SiC 2 Ceramics at Elevated TemperaturesJournal of the American Ceramic Society, 2001
- A new synthesis reaction of Ti3SiC2 through pulse discharge sintering Ti/SiC/TiC powderScripta Materialia, 2001
- Fatigue-crack growth and fracture properties of coarse and fine-grained Ti3SiC2Scripta Materialia, 2000
- Simultaneous synthesis and densification of Ti5Si3 and Ti5Si3–20 vol% ZrO2 composites by field-activated and pressure-assisted combustionMaterials Science and Engineering: A, 1999
- Influence of dynamic densification on nanostructure formation in Ti5Si3 intermetallic alloy and its bulk propertiesMaterials Science and Engineering: A, 1999
- Microstructure and mechanical behavior of reaction hot-pressed titanium silicide and titanium silicide-based alloys and compositesMetallurgical and Materials Transactions A, 1998
- Comparative study of fabrication of Si3N4/SiC composites by spark plasma sintering and hot isostatic pressingJournal of the European Ceramic Society, 1998