Title: sintering
Long Title: IUPAC Gold Book - sintering
DOI: 10.1351/goldbook.S05704
Status: current

Definition
Temperature-induced coalescence and densification of porous solid particles below the melting points of their major components.

Notes
1) The term was originally coined for the process by which fly ash produced in combustion of fuels such as coal is baked at a very high temperature. The sintered material is used in the manufacture of cinder blocks and other ceramic products.
2) Modified from previous definition. The definition proposed here is recommended as being more explicit.

Related Terms
- ceramic: https://goldbook.iupac.org//terms/view/CT07540
- densification: https://goldbook.iupac.org//terms/view/DT07618
- melting: https://goldbook.iupac.org//terms/view/M03821

Source
- PAC, 2007, 79, 1801. 'Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)' on page 1825 (https://doi.org/10.1351/pac200779101801)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/S05704/html
- json: https://goldbook.iupac.org/terms/view/S05704/json
- xml: https://goldbook.iupac.org/terms/view/S05704/xml

Citation: Citation: 'sintering' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.S05704
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-06-04T02:14:43+00:00