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Synthesis and properties of new β-Sialon/TiN composites via a novel AlxTiy intermediate
- Source :
- Ceramics International. 42:2330-2338
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A new synthesis of β-Sialon/TiN composites by reaction bonding of aluminium powder coated with nanosized titania is reported. A sol–gel method was used to coat the aluminium particles with titania and the resulting powder was calcined in an inert atmosphere to produce a Ti x Al y –Al 2 O 3 composite which was heat-treated in nitrogen to form an AlN–Al 2 O 3 –TiN composite. After addition of a suitable silicon phase and yttrium oxide as a nitridation and sintering aid, a β-Sialon/TiN composite was formed by reaction bonding under nitrogen. Young׳s modulus, hardness, fracture toughness, tensile strength and thermal shock resistance of the new composites were measured and compared with a standard β-Sialon fabricated by reaction bonding of Al 2 O 3 , AlN and Si under similar conditions.
- Subjects :
- 010302 applied physics
Sialon
Materials science
Process Chemistry and Technology
Composite number
Oxide
chemistry.chemical_element
Sintering
02 engineering and technology
Yttrium
021001 nanoscience & nanotechnology
01 natural sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
chemistry
Aluminium
0103 physical sciences
Materials Chemistry
Ceramics and Composites
Aluminium powder
Composite material
0210 nano-technology
Tin
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........16ceba37025790569ff021c88daab842