Flash sintering (FS) is a novel field-assisted sintering technology, where the ceramic is heated internally by the Joule effect. While FS promises a tremendous reduction of ceramic firing time and furnace temperature, it has been applied only at the laboratory scale to date. The key limitation of scaling up the technique to the industrial manufacturing level is the intrinsic difficulty managing the heat generation and obtaining homogenous microstructures in components of industrial interest. Heterogeneous regions primarily originate from the different types of thermal gradients that develop during FS; therefore, the management of heat generation is crucial to achieve uniformity. In this article, we discuss the advantages of controlling the microstructural homogeneity of ceramics during FS, and the technical routes to achieve this. The origin and formation mechanisms of thermal gradients upon flash sintering are outlined. Possible approaches to reduce thermal and microstructural gradients are identified. The opportunities and challenges in scale-up of FS are discussed from both industrial and scientific perspectives.

Promoting microstructural homogeneity during flash sintering of ceramics through thermal management / Jones, Gareth M.; Biesuz, Mattia; Ji, Wei; Fisher John, Sandra; Grimley, Carolyn; Manière, Charles; Dancer, Claire E. J.. - In: MRS BULLETIN. - ISSN 0883-7694. - 46:1(2021), pp. 59-66. [10.1557/s43577-020-00010-2]

Promoting microstructural homogeneity during flash sintering of ceramics through thermal management

Biesuz, Mattia;
2021-01-01

Abstract

Flash sintering (FS) is a novel field-assisted sintering technology, where the ceramic is heated internally by the Joule effect. While FS promises a tremendous reduction of ceramic firing time and furnace temperature, it has been applied only at the laboratory scale to date. The key limitation of scaling up the technique to the industrial manufacturing level is the intrinsic difficulty managing the heat generation and obtaining homogenous microstructures in components of industrial interest. Heterogeneous regions primarily originate from the different types of thermal gradients that develop during FS; therefore, the management of heat generation is crucial to achieve uniformity. In this article, we discuss the advantages of controlling the microstructural homogeneity of ceramics during FS, and the technical routes to achieve this. The origin and formation mechanisms of thermal gradients upon flash sintering are outlined. Possible approaches to reduce thermal and microstructural gradients are identified. The opportunities and challenges in scale-up of FS are discussed from both industrial and scientific perspectives.
2021
1
Jones, Gareth M.; Biesuz, Mattia; Ji, Wei; Fisher John, Sandra; Grimley, Carolyn; Manière, Charles; Dancer, Claire E. J.
Promoting microstructural homogeneity during flash sintering of ceramics through thermal management / Jones, Gareth M.; Biesuz, Mattia; Ji, Wei; Fisher John, Sandra; Grimley, Carolyn; Manière, Charles; Dancer, Claire E. J.. - In: MRS BULLETIN. - ISSN 0883-7694. - 46:1(2021), pp. 59-66. [10.1557/s43577-020-00010-2]
File in questo prodotto:
File Dimensione Formato  
Jones2021_Article_PromotingMicrostructuralHomoge.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 1.49 MB
Formato Adobe PDF
1.49 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/290511
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 43
  • ???jsp.display-item.citation.isi??? 40
  • OpenAlex ND
social impact