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A Sol-Gel Route to B4C

Kroke, Edwin and Völger, Karl W. and Klonczynski, Alexander and Riedel, Ralf (2001):
A Sol-Gel Route to B4C.
In: Angewandte Chemie International Edition, 40 (9), pp. 1698-1700. Wiley VCH, Weinheim, Germany, ISSN 1433-7851,
DOI: 10.1002/1521-3773(20010504)40:9<1698::AID-ANIE16980>3.0.CO;2-Z,
[Article]

Abstract

B‐trichloroborazene reacts with bis(trimethylsilyl)carbodiimide to form non‐oxide gels (see scheme). The xerogels consist of a polymeric network of borazine rings linked by carbodiimide groups. Pyrolysis at 1200°C provides amorphous ceramics with the composition BC0.23N1.1Si0.05H0.09 ≈ B4CN4. At 2000°C pure B4C is formed.

Item Type: Article
Erschienen: 2001
Creators: Kroke, Edwin and Völger, Karl W. and Klonczynski, Alexander and Riedel, Ralf
Title: A Sol-Gel Route to B4C
Language: English
Abstract:

B‐trichloroborazene reacts with bis(trimethylsilyl)carbodiimide to form non‐oxide gels (see scheme). The xerogels consist of a polymeric network of borazine rings linked by carbodiimide groups. Pyrolysis at 1200°C provides amorphous ceramics with the composition BC0.23N1.1Si0.05H0.09 ≈ B4CN4. At 2000°C pure B4C is formed.

Journal or Publication Title: Angewandte Chemie International Edition
Journal volume: 40
Number: 9
Publisher: Wiley VCH, Weinheim, Germany
Uncontrolled Keywords: boron, ceramics, gels, sol-gel process
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 17 Dec 2018 11:34
DOI: 10.1002/1521-3773(20010504)40:9<1698::AID-ANIE16980>3.0.CO;2-Z
Official URL: https://doi.org/10.1002/1521-3773(20010504)40:9<1698::AID-AN...
Funders: We are grateful for the financial support from the Deutsche Forschungsgemeinschaft (DFG, Bonn), Fonds der Chemischen Industrie (FCI, Frankfurt), and Bayer AG (Leverkusen).
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