Issue 3, 2003

Preparation of h-BN nano-film coated α-Si3N4 composite particles by a chemical route

Abstract

In this study, α-Si3N4 particles were successfully coated with h-BN nano-film by a novel chemical route. Ammonium biborate was deposited onto the surface of silicon nitride particles to form NH4HB4O7·3H2O–Si3N4 composite powders by the heterogeneous precipitation method in anhydrous ethanol solution. The obtained composite powders were dried at room temperature, then nitrided in an ammonia flow at 900 °C and subsequently crystallized at 1600 °C to obtain h-BN nano-film coated α-Si3N4 composite particles. The prepared composite particles were characterized by IR, SAM, TEM, HRTEM, TG and DSC techniques. TEM and HRTEM micrographs showed that α-Si3N4 particles were well coated by BN ultrathin film in thickness of 1 nm.

Graphical abstract: Preparation of h-BN nano-film coated α-Si3N4 composite particles by a chemical route

Article information

Article type
Paper
Submitted
22 Oct 2002
Accepted
08 Jan 2003
First published
29 Jan 2003

J. Mater. Chem., 2003,13, 628-630

Preparation of h-BN nano-film coated α-Si3N4 composite particles by a chemical route

J. Li and L. Gao, J. Mater. Chem., 2003, 13, 628 DOI: 10.1039/B210385K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements