Bayer Aktiengesellschaft

Nils Perchenek

Hans-Peter Baldus

Axel Thierauf

Dieter Sporn

Ralf Herborn

Martin Jansen

Gerd Passing

Hermann-Jens Womelsdorf

Josua L Offelholz

The present invention relates to a method for manufacturing transition metal carbides and/or transition metal carbonitrides and the use thereof together with novel transition metal xerogels.

Method for manufacturing transition metal carbides and/or transition metal carbonitrides and use thereof together with novel transition metal xerogels

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

Ceramic fibers in the system silicon-boron-nitrogen-carbon

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 &gt;2.5 GPa, a modulus of elasticity of &gt;250 GPa and a creep value m of from 0.4 to 1 (in accordance with standard BSR test, 1 hour, 1400.degree. C.).

Process of preparing silicon-boron-nitrogen-carbon fibers

The present invention relates to polymeric multinary azanes built up from units of the general formula [E(NR.sup.1 R.sup.2).sub.a (NR.sup.3).sub.b/2 ], wherein E may be B,Al,Ga,In,Si,Ge,Ti, Zr, Hf,V,Nb,Ta,Cr,Mo or W and R.sup.1,R.sup.2,R.sup.3 may be H, C.sub.1 -C.sub.6 alkyl, vinyl or phenyl; methods for the preparation of these polymers and their use as precursors for high-performance ceramics.

Polymeric multinary azanes, methods for their preparation and their use

The present invention relates to boron subphosphide/aluminum oxide composite materials, to processes for the production of these materials and to the use thereof.

Boron subphosphide/aluminum oxide composite materials, processes for the

The invention relates to ternary element compounds in a novel Al-B-P system, to a process for their production and to their use.

Growing community of inventors

Leverkusen, Germany

Nils Perchenek