View in EDS

Cold sintering of Metakaolin: A one-step densification process of amorphous aluminosilicate.

Saved in:
Bibliographic Details
Title: Cold sintering of Metakaolin: A one-step densification process of amorphous aluminosilicate.
Authors: Li, Linhao1 (AUTHOR) 2022500022@buct.edu.cn, Yang, Fan2 (AUTHOR), Liu, Cheng3,4 (AUTHOR), Chen, Zhao1 (AUTHOR), Ge, Jin5 (AUTHOR), Hou, Zhiling1,6 (AUTHOR)
Source: Ceramics International. Oct2025:Part B, Vol. 51 Issue 24, p43311-43318. 8p.
Subjects: Sintering, Aluminum silicates, Industrial applications, Ceramics, Mechanical behavior of materials, Ionic conductivity
Abstract: Aluminosilicates find wide and important applications in many modern industrial scenarios, but their densification process is highly energy-intensive. This study developed a one-step cold sintering process for metakaolin ceramics, a readily available amorphous aluminosilicate material. The optimized process can produce ceramics with a density of 90% relative to the true density at a significantly reduced sintering temperature of 240 °C (as compared to the typical sintering temperature of ∼1400 °C) under an applied pressure of 400 MPa. The original amorphous phase of the metakaolin was preserved after the sintering process. The resulting metakaolin ceramics exhibited adequate mechanical properties, with a hardness of 3.6 GPa and a Young's modulus of 58.1 GPa. They also demonstrated a high bulk ionic conductivity of 0.002 S/cm at 600 °C. These results show a wide range of potential applications for cold-sintered metakaolin ceramics in areas such as solid-state electrolytes and refractories. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 187969091
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Cold sintering of Metakaolin: A one-step densification process of amorphous aluminosilicate.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Li%2C+Linhao%22">Li, Linhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2022500022@buct.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Fan%22">Yang, Fan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Cheng%22">Liu, Cheng</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Zhao%22">Chen, Zhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ge%2C+Jin%22">Ge, Jin</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hou%2C+Zhiling%22">Hou, Zhiling</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Oct2025:Part B, Vol. 51 Issue 24, p43311-43318. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+silicates%22">Aluminum silicates</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+applications%22">Industrial applications</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramics%22">Ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+conductivity%22">Ionic conductivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Aluminosilicates find wide and important applications in many modern industrial scenarios, but their densification process is highly energy-intensive. This study developed a one-step cold sintering process for metakaolin ceramics, a readily available amorphous aluminosilicate material. The optimized process can produce ceramics with a density of 90% relative to the true density at a significantly reduced sintering temperature of 240 °C (as compared to the typical sintering temperature of ∼1400 °C) under an applied pressure of 400 MPa. The original amorphous phase of the metakaolin was preserved after the sintering process. The resulting metakaolin ceramics exhibited adequate mechanical properties, with a hardness of 3.6 GPa and a Young's modulus of 58.1 GPa. They also demonstrated a high bulk ionic conductivity of 0.002 S/cm at 600 °C. These results show a wide range of potential applications for cold-sintered metakaolin ceramics in areas such as solid-state electrolytes and refractories. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=187969091
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ceramint.2025.07.070
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 43311
    Subjects:
      – SubjectFull: Sintering
        Type: general
      – SubjectFull: Aluminum silicates
        Type: general
      – SubjectFull: Industrial applications
        Type: general
      – SubjectFull: Ceramics
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Ionic conductivity
        Type: general
    Titles:
      – TitleFull: Cold sintering of Metakaolin: A one-step densification process of amorphous aluminosilicate.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Li, Linhao
      – PersonEntity:
          Name:
            NameFull: Yang, Fan
      – PersonEntity:
          Name:
            NameFull: Liu, Cheng
      – PersonEntity:
          Name:
            NameFull: Chen, Zhao
      – PersonEntity:
          Name:
            NameFull: Ge, Jin
      – PersonEntity:
          Name:
            NameFull: Hou, Zhiling
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 05
              M: 10
              Text: Oct2025:Part B
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 02728842
          Numbering:
            – Type: volume
              Value: 51
            – Type: issue
              Value: 24
          Titles:
            – TitleFull: Ceramics International
              Type: main
ResultId 1