Invention Grant
- Patent Title: Direct 4D printing gradient structure ceramics
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Application No.: US17512664Application Date: 2021-10-27
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Publication No.: US11945754B2Publication Date: 2024-04-02
- Inventor: Jian Lu , Lei Wan , Zhou Chen , Zhengyi Mao
- Applicant: City University of Hong Kong
- Applicant Address: HK Hong Kong
- Assignee: City University of Hong Kong
- Current Assignee: City University of Hong Kong
- Current Assignee Address: HK Hong Kong
- Agency: Idea Intellectual Limited
- Agent Margaret A. Burke; Sam T. Yip
- Main IPC: B33Y10/00
- IPC: B33Y10/00 ; B28B1/00 ; B33Y70/00 ; C04B35/571 ; C04B35/626 ; C04B35/64

Abstract:
A method for forming a complex shape three-dimensional ceramic article by printing a first layer of a first material having a first fraction of first ceramic particles and a first fraction of a first polymeric ceramic precursor. A second layer is printed such that it is at least partially disposed on the first layer of a second material having a second fraction of second ceramic particles and a second fraction of a second polymeric ceramic precursor. A composite of the first layer and the second layer is heated at a temperature sufficient to decompose the first and second polymeric ceramic precursors and sinter the article. During the sintering process, the first and second layers with different fractions of ceramic particles undergo different degrees of shrinkage, resulting in a tuneable mismatch of the bilayer structure and accurately achieving a targeted geometry.
Public/Granted literature
- US20230128778A1 DIRECT 4D PRINTING GRADIENT STRUCTURE CERAMICS Public/Granted day:2023-04-27
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