SiAlON-TiN Ceramic Composites by Electric Current Assisted Sintering

Smirnov, K. L.; Grigoryev, E. G.; Nefedova, E. V.

doi:10.4028/www.scientific.net/msf.946.53

MSF

2019

DOI: 10.4028/www.scientific.net/msf.946.53

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SiAlON-TiN Ceramic Composites by Electric Current Assisted Sintering

K. L. Smirnov

E. G. Grigoryev

E. V. Nefedova

Abstract: Electric current assisted sintering of β-Si5AlON7-TiN ceramic composites from raw materials prepared by combustion synthesis was investigated. A high level of relative density (92% and higher) was achieved by using of two types of electric current assisted sintering technique: high voltage electric discharge consolidation, as well as spark plasma sintering. While only spark plasma sintering, it may be considered as promising technique for obtaining ceramic composites and items with high level of strength prope… Show more

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Cited by 3 publications

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Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

Ogunbiyi,

Jamiru,

Adekoya

et al. 2024

J Aust Ceram Soc

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Oxonitridoaluminosilicates (SiAlON) are renowned in advanced ceramics for their exceptional properties: high temperature stability, excellent oxidation resistance, and good wear resistance. Incorporating micro- and nano-sized fillers into SiAlON matrices enhances their properties, yielding SiAlON composite materials with superior mechanical, tribological, and thermal characteristics. This review examines fabrication techniques for producing SiAlON micro/nanocomposites and the structure-property relationships governing their performance across different phase compositions (β, α, X, and O-phases). A comprehensive literature review scrutinized fabrication techniques and structure-property relationships from various databases and scholarly articles. Although SiAlON composites with micro/nano inclusions hold promise across applications, understanding their fabrication processes, structure-property relationships, and potential applications in different fields is crucial. The review highlights diverse fabrication techniques for SiAlON micro/nanocomposites and provides insights into their structure-property relationships. Additionally, emerging applications in structural domains, cutting tools, coatings, corrosion protection, solar cells, LEDs, biomedical realms, and filtration membranes are discussed. This review is a valuable resource for researchers and engineers interested in designing SiAlON products tailored for sophisticated applications. It emphasizes understanding fabrication processes and structure-property relationships to unlock SiAlON-based materials' full potential across industries.

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Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

Ogunbiyi,

Jamiru,

Adekoya

et al. 2024

J Aust Ceram Soc

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Diametral Compression of Short Cylinders with a Central Hole as a Method for Assessing the Tensile Strength of Brittle Materials

Goltsev,

Osintsev,

Plotnikov

et al. 2024

Inorg Mater

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Diametral compression of short cylinders with a central hole as a method for assessing the tear resistance of brittle materials

Gol'tsev

Osintsev

Plotnikov

et al. 2023

Zavod. lab., Diagn. mater.

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The possibility of evaluating the tear resistance of brittle materials by diametral compression test of short cylinders (solid and central with a central hole) has been analyzed. The computational analysis was performed by the finite element method using the ANSYS program. It is shown that the stress distribution in a disk with a hole is similar that without a hole but contains disturbances introduced by a stress concentrator in the form of a hole. The normalized values of the maximum first principal stresses for a disk with a hole exceed the values for a disk without a hole by more than 5 times. The experimental analysis was carried out by testing short cylinders, both solid and with a central hole, made of brittle materials: cast iron and graphite. It is noted that the fracture resistance, determined by the formula recommended by the ASTM D3967 – 95a standard, practically does not differ for solid cast iron samples, and for graphite differs by 1.5 times from the true tear resistance of materials; when testing samples with a central hole, the tear resistance differs from the standard values by a factor of 1.5 and almost 2.5, respectively. The different nature of the sample destruction is also noted: slow controlled rupture of cast iron and dynamic destruction of graphite with the corresponding deformation diagrams. The results of testing fuel pellets of uranium dioxide are given as an example of testing real cylindrical samples with a central hole. It is shown that the test results of ARV-1 graphite samples are in good agreement with the test results of fuel samples. Thus, the possibility of testing small-sized short cylinders according to the diametral compression scheme for indirect assessment of the tensile strength of brittle materials has been confirmed. A calculation formula is proposed for an indirect assessment of the tensile strength of brittle materials based on the results of testing small-sized short cylinders, both with and without a central hole according to the diametral compression scheme.

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SiAlON-TiN Ceramic Composites by Electric Current Assisted Sintering

Cited by 3 publications

References 11 publications

Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

Structure-property relationship and emerging applications of nano- and micro-sized fillers reinforced sialon composites: a review

Diametral Compression of Short Cylinders with a Central Hole as a Method for Assessing the Tensile Strength of Brittle Materials

Diametral compression of short cylinders with a central hole as a method for assessing the tear resistance of brittle materials

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