Achieving Super-Metallophobicity on Silicon-based Ceramics at High Temperature.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39169752.
- Also identified by DOI 10.1002/adma.202405194.
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Abstract
As a critical concept in physical chemistry, superwettability is widely concerned in both fundamental science and practical engineering in past few decades. Despite this, investigation on high temperature superwettability is still a void, which is significant both in scientific and industrial fields. Herein, a ceramic with specific high temperature non-wetting property, Si<sub>2</sub>N<sub>2</sub>O is proposed. Compared with other materials, Si<sub>2</sub>N<sub>2</sub>O is elucidated with better practical non-wetting property against various non-ferrous metals. Combining with micro-nanostructures, the metallophobicity is further improved (contact angle >150° and contact angle hysteresis ≈0°). The extraordinary metal repellency is defined as "super-metallophobicity", which is proved to be induced by distinctive thermodynamic and dynamic wetting behavior on the rough surface. The research of super-metallophobicity not only sheds light on superwettability at high temperature, but also offers worthy insights for future potential material design in a wide range of applications, such as metallurgy, 3D printing and semiconductor industry.