Densification, microstructure and tribomechanical properties of SPS processed β-SiAlON bonded WC composites

Sarkar, Soumya; Halder, Rupa; Biswas, Mita; Bandyopadhyay, Siddhartha

doi:10.1016/j.ijrmhm.2020.105318

Cited by 9 publications

(3 citation statements)

References 42 publications

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“…When entering the holding stage, the displacement is basically unchanged, and the sintering densification is complete. Compared with the sintering densification of β‐Sialon ceramics with only oxide additives, 27 there are two obvious densification processes in the curve of sintering displacement versus sintering time.…”

Section: Resultsmentioning

confidence: 97%

“…When entering the holding stage, the displacement is basically unchanged, and the sintering densification is complete. Compared with the sintering densification of β-Sialon ceramics with only oxide additives,27 there are two obvious densification processes in the curve of sintering displacement versus sintering time.Figure4shows the sintering displacement rate curves versus temperature for the β-Sialon ceramics. With the increase in sintering temperature, the displacement rate exhibits two distinct abrupt stages, and the temperature ranges of the two-rate mutation stages are 1125-1215 and 1240-1425 • C, respectively.…”

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confidence: 96%

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Ultrafine‐grained β‐Sialon fabricated by two‐stage sintering and study on diffusion toughening of Ti–22Al–25Nb

Cui

Guo

et al. 2023

Int J Applied Ceramic Tech

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The ultrafine-grained β-Sialon ceramics were fabricated by spark plasma sintering at different temperatures with inorganic Al 2 O 3 -Y 2 O 3 and Ti-22Al-25Nb intermetallic powder as composite additives. The research showed that β-Sialon ceramics achieve two-stage sintering densification. Al 2 O 3 -Y 2 O 3 inorganic additives promoted the synthesis and densification of β-Sialon ceramics at 1125-1215 • C. Ti-22Al-25Nb intermetallic powder diffused Ti and Nb elements at 1240-1425 • C, thereby improving the fracture toughness of β-Sialon ceramics. The maximum fracture toughness (∼9.69 MPa m 1/2 ) under 19.6 N was obtained for β-Sialon ceramics sintered at 1600 • C.

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Section: Resultsmentioning

confidence: 97%

mentioning

confidence: 96%

Ultrafine‐grained β‐Sialon fabricated by two‐stage sintering and study on diffusion toughening of Ti–22Al–25Nb

Cui

Guo

et al. 2023

Int J Applied Ceramic Tech

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show abstract

“…Although several nomenclatures are used to describe the method, including pulsed electric current sintering (PECS), field assisted sintering (FAST), field-activated sintering technique, and current-activated pressure-assisted densification, it is often named Spark Plasma Sintering (SPS) [ 1 , 9 , 10 ]. During the last decade, the SPS technique has been used to consolidate a wide variety of materials, producing them with high density in a short processing time [ 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of AA7075 Aluminum Alloy Fabricated by Spark Plasma Sintering (SPS)

et al. 2021

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AA7075 aluminum alloy is widely used for several high-technology applications for its high mechanical strength to weight ratio but is still the subject of several studies seeking a further increase in its mechanical properties. A commercial powder is used, either as-received or after ball-milling. Dense AA7075 samples are prepared in one step by Spark Plasma Sintering, at 550 °C with a holding time of 15 min and a uniaxial pressure of 100 MPa. No additional heat treatment is performed. Laser granulometry, X-ray diffraction and optical- and scanning electron microscopy show that both grain size and morphology are preserved in the dense samples, due to the relatively low temperature and short sintering time used. The samples prepared using the ball-milled powder exhibit both higher Vickers microhardness and transverse fracture strength values than those prepared using the raw powder, reflecting the finer microstructure.

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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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Densification, microstructure and tribomechanical properties of SPS processed β-SiAlON bonded WC composites

Cited by 9 publications

References 42 publications

Ultrafine‐grained β‐Sialon fabricated by two‐stage sintering and study on diffusion toughening of Ti–22Al–25Nb

Ultrafine‐grained β‐Sialon fabricated by two‐stage sintering and study on diffusion toughening of Ti–22Al–25Nb

Microstructure and Mechanical Properties of AA7075 Aluminum Alloy Fabricated by Spark Plasma Sintering (SPS)

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

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