Despite sintering has a history even longer than human civilization (its discovery dates back at least to 25,000 years ago), in the past decade, new exciting challenges have emerged in the field: reduction of environmental impact, densification of metastable phases, complete consolidation of ultra-refractory compounds, precise microstructural design to control properties of functional ceramics and integration between inorganic-organic compounds. In order to meet such challenges, new sintering routes employing electric fields/currents, water/solvents and external loads have been developed. The research also opened new questions about unexpected (and still not completely understood) interactions between electricity, presence of water/liquid, heating and diffusion processes. In this manuscript, we have rationalized the last-ten-years research in the field of sintering for the consolidation of ceramics. The processes are collected into three main groups: flash-like (sintering under relatively large electric fields and the material is internally heated by the Joule effect), spark plasma sintering-like (combination of pressure and limited electric field) and hydro-consolidation (sintering at temperature below ≈ 350 °C in the presence of a liquid under an applied pressure). This paper aims to point out common features and differences among different techniques. Finally, future research trends and new paradigm in material processing are anticipated.

What's new in ceramics sintering? A short report on the latest trends and future prospects / Biesuz, M.; Grasso, S.; Sglavo, V. M.. - In: CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE. - ISSN 1359-0286. - 24:5(2020), pp. 100868.1-100868.23. [10.1016/j.cossms.2020.100868]

What's new in ceramics sintering? A short report on the latest trends and future prospects

Biesuz M.;Sglavo V. M.
2020-01-01

Abstract

Despite sintering has a history even longer than human civilization (its discovery dates back at least to 25,000 years ago), in the past decade, new exciting challenges have emerged in the field: reduction of environmental impact, densification of metastable phases, complete consolidation of ultra-refractory compounds, precise microstructural design to control properties of functional ceramics and integration between inorganic-organic compounds. In order to meet such challenges, new sintering routes employing electric fields/currents, water/solvents and external loads have been developed. The research also opened new questions about unexpected (and still not completely understood) interactions between electricity, presence of water/liquid, heating and diffusion processes. In this manuscript, we have rationalized the last-ten-years research in the field of sintering for the consolidation of ceramics. The processes are collected into three main groups: flash-like (sintering under relatively large electric fields and the material is internally heated by the Joule effect), spark plasma sintering-like (combination of pressure and limited electric field) and hydro-consolidation (sintering at temperature below ≈ 350 °C in the presence of a liquid under an applied pressure). This paper aims to point out common features and differences among different techniques. Finally, future research trends and new paradigm in material processing are anticipated.
2020
5
Biesuz, M.; Grasso, S.; Sglavo, V. M.
What's new in ceramics sintering? A short report on the latest trends and future prospects / Biesuz, M.; Grasso, S.; Sglavo, V. M.. - In: CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE. - ISSN 1359-0286. - 24:5(2020), pp. 100868.1-100868.23. [10.1016/j.cossms.2020.100868]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/278301
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