Cold Hydrostatic Sintering: From shaping to 3D printing

Anna Jiang; Daoyao Ke; Ludi Xu; Qiang Xu; Jiang Li; Jiabei Wei; Chunfeng Hu; Salvatore Grasso

Journal of Materiomics (Sep 2019)

Cold Hydrostatic Sintering: From shaping to 3D printing

Anna Jiang,
Daoyao Ke,
Ludi Xu,
Qiang Xu,
Jiang Li,
Jiabei Wei,
Chunfeng Hu,
Salvatore Grasso

Affiliations

Anna Jiang: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
Daoyao Ke: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
Ludi Xu: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
Qiang Xu: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
Jiang Li: Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, China
Jiabei Wei: Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, China
Chunfeng Hu: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China; Corresponding author. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.
Salvatore Grasso: Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China; Corresponding author. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.

Journal volume & issue: Vol. 5, no. 3
pp. 496 – 501

Abstract

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We developed a novel consolidation technique, Cold Hydrostatic Sintering (CHS), which allows near full densification of silica. The technique is inspired by biosilicification and geological formation of siliceous rocks. Unlike established cold sintering method which is based on uniaxial pressure, CHS employs an isostatic pressure to enable room temperature consolidation of bulks having a complex three-dimensional shape. The resulting material is transparent (in line transmittance exceeding 70% in the visible range) and amorphous. After drying, the Vickers hardness was as high 1.4 GPa which half of materials consolidated at 1200 °C and it is the highest among all materials processed at room temperature. The CHS method, because of its simplicity, might be suitable for broad range of applications including 3D printing, mould forming and preparation of multi-layered devices. Because of the absence of the firing step, CHS could be directly integrated in the manufacturing of a wide range of hybrid (organic/inorganic) materials for functional and biological applications. Keywords: Silica, Cold Hydrostatic Sintering (CHS), Shaping, 3D printing

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

About the journal