Geologically-inspired strong bulk ceramics made with water at room temperature.

Abstract:

:Dense ceramic materials can form in nature under mild temperatures in water. By contrast, man-made ceramics often require sintering temperatures in excess of 1,400 °C for densification. Chemical strategies inspired by biomineralization processes have been demonstrated but remain limited to the fabrication of thin films and particles. Besides biomineralization, the formation of dense ceramic-like materials such as limestone also occurs in nature through large-scale geological processes. Inspired by the geological compaction of mineral sediments in nature, we report a room-temperature method to produce dense and strong ceramics within timescales comparable to those of conventional manufacturing processes. Using nanoscale powders and high compaction pressures, we show that such cold sintering process can be realized with water at room temperature to result in centimetre-sized bulk parts with specific strength that is comparable to, and occasionally even higher than, that of traditional structural materials like concrete.

journal_name

Nat Commun

journal_title

Nature communications

authors

Bouville F,Studart AR

doi

10.1038/ncomms14655

subject

Has Abstract

pub_date

2017-03-06 00:00:00

pages

14655

issn

2041-1723

pii

ncomms14655

journal_volume

8

pub_type

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