Densification of irregular polydispersed glass particles described as a complex relaxation process
The sintering of compacts of irregular non-crystallising glass particles was studied by isothermal and constant-rate heating experiments in a hot stage microscope. The resulting data fitted very well to kinetic equations developed in this study, in which sintering is assumed to be a complex relaxati...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539521001516 |
| _version_ | 1818271252499922944 |
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| author | J.L. Amorós E. Blasco C. Feliu A. Moreno |
| author_facet | J.L. Amorós E. Blasco C. Feliu A. Moreno |
| author_sort | J.L. Amorós |
| collection | DOAJ |
| description | The sintering of compacts of irregular non-crystallising glass particles was studied by isothermal and constant-rate heating experiments in a hot stage microscope. The resulting data fitted very well to kinetic equations developed in this study, in which sintering is assumed to be a complex relaxation process, described by the Kohlrausch–Williams–Watts (KWW) relaxation function. The effect of compact pressing pressure, heating rate, and particle size distribution on the sintering curve was determined. It was generally verified that the effect of temperature on the sintering rate could be described by the effect of temperature on the inverse of glass viscosity. For industrial particle size distributions, that the pre-exponential factor of the process rate constant (or inverse of relaxation time) increased with pressing pressure and decreased with the inverse of particle mean radius. For abnormally wide particle distributions a combination of KWW functions were required. |
| first_indexed | 2024-12-12T21:23:13Z |
| format | Article |
| id | doaj.art-99b4664e9cde4858bda05f57b562e377 |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-12-12T21:23:13Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-99b4664e9cde4858bda05f57b562e3772022-12-22T00:11:31ZengElsevierOpen Ceramics2666-53952022-03-019100205Densification of irregular polydispersed glass particles described as a complex relaxation processJ.L. Amorós0E. Blasco1C. Feliu2A. Moreno3Instituto de Tecnología Cerámica – Asociación de Investigación de las Industrias Cerámicas, Spain; Department of Chemical Engineering. Universitat Jaume I, Campus Universitario Riu Sec, 12006, Castellon, SpainInstituto de Tecnología Cerámica – Asociación de Investigación de las Industrias Cerámicas, Spain; Corresponding author.Instituto de Tecnología Cerámica – Asociación de Investigación de las Industrias Cerámicas, Spain; Department of Chemical Engineering. Universitat Jaume I, Campus Universitario Riu Sec, 12006, Castellon, SpainInstituto de Tecnología Cerámica – Asociación de Investigación de las Industrias Cerámicas, Spain; Department of Chemical Engineering. Universitat Jaume I, Campus Universitario Riu Sec, 12006, Castellon, SpainThe sintering of compacts of irregular non-crystallising glass particles was studied by isothermal and constant-rate heating experiments in a hot stage microscope. The resulting data fitted very well to kinetic equations developed in this study, in which sintering is assumed to be a complex relaxation process, described by the Kohlrausch–Williams–Watts (KWW) relaxation function. The effect of compact pressing pressure, heating rate, and particle size distribution on the sintering curve was determined. It was generally verified that the effect of temperature on the sintering rate could be described by the effect of temperature on the inverse of glass viscosity. For industrial particle size distributions, that the pre-exponential factor of the process rate constant (or inverse of relaxation time) increased with pressing pressure and decreased with the inverse of particle mean radius. For abnormally wide particle distributions a combination of KWW functions were required.http://www.sciencedirect.com/science/article/pii/S2666539521001516Glass sinteringKinetic modelOperating variables |
| spellingShingle | J.L. Amorós E. Blasco C. Feliu A. Moreno Densification of irregular polydispersed glass particles described as a complex relaxation process Open Ceramics Glass sintering Kinetic model Operating variables |
| title | Densification of irregular polydispersed glass particles described as a complex relaxation process |
| title_full | Densification of irregular polydispersed glass particles described as a complex relaxation process |
| title_fullStr | Densification of irregular polydispersed glass particles described as a complex relaxation process |
| title_full_unstemmed | Densification of irregular polydispersed glass particles described as a complex relaxation process |
| title_short | Densification of irregular polydispersed glass particles described as a complex relaxation process |
| title_sort | densification of irregular polydispersed glass particles described as a complex relaxation process |
| topic | Glass sintering Kinetic model Operating variables |
| url | http://www.sciencedirect.com/science/article/pii/S2666539521001516 |
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