Process of preparing silicon-boron-nitrogen-carbon fibers

US5885519A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Peter Baldus · Burscheid, DE
• Nils Perchenek · Leverkusen, DE
• Axel Thierauf · Würzburg, DE
• Ralf Herborn · Würzburg, DE
• Dieter Sporn · Würzburg, DE

Key dates

• Filing date: Mar 13, 1997
• Grant date: Mar 23, 1999
• Expiry date: Mar 13, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/62227
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to new amorphous, high-strength SiBN(C) fibres which are at the same time resistant to high-temperature creep, their production and use. The fibres have a strength at room temperature of >2.5 GPa, a modulus of elasticity of >250 GPa and a creep value m of from 0.4 to 1 (in accordance with standard BSR test, 1 hour, 1400.degree. C.).