Collaboration between H.C. Starck Ceramics and Krahn Chemie re sales of silicon carbide and silicon nitride
1 September 2010
Since the beginning of August 2010, H.C. Starck Ceramics and the Hamburg distributor Krahn Chemie have announced a new cooperation covering the complete European sales of alpha-silicon carbide and silicon nitride powders already mixed with sinter additives and pressing agents.
Krahn Chemie, part of the Hamburg-based Otto Krahn Group, and specializes in the sales, distribution, and marketing of chemical raw materials and specialty chemicals. As a distributor and trading company, Krahn represents a large number of renowned, globally operating raw material manufacturers in Europe.The company has 70 employees and generates a sales volume of approx. 140 million euros.
The products are now marketed through Krahn Chemie under the trade names Starceram® S (α-SiC) and Starceram® N (Si3N4). Both ceramic powders are used for the production of high-performance ceramics, and as ready-to-press material are suitable for direct processing.
Starceram® N is used for high-stress components (slide rings, slide bearings, rollers, mill linings, wire dies of worm gears) in machines, light construction applications and casting technology. Silicon nitride has a high fracture toughness, and is therefore resistant to impact and shock stresses. Various strengths can be achieved by means of different hot-isostatic sintering processes at different pressures (10 bar, 100 bar and 2000 bar).
It silicon carbide product, Starceram® S is a densely sintered material with extremely high hardness and wear resistance, good corrosion resistance, high heat conductivity and very good tribological characteristics. According to H.C.Starck, Starceram® S is also available as an undoped SiC raw material in various qualities for further processing by the customer. The extreme corrosion resistance enables its use in almost all acids and alkalis. It exhibits an almost constant strength up to a temperature range of over 1600 °C, and its main use includes high-temperature applications. Starceram® S is used for slide rings, slide bearings, pump components, worm gears, spouts and nozzles.
Monrad Joseph, Director Sales & Marketing Europe of H.C. Starck Ceramics, has said,“The very good connections of Krahn Chemie with the ceramics industry as well as its deep understanding of the products and customer requirements make Krahn Chemie a valuable partner”.
“H.C. Starck Ceramics is a highly capable producer with comprehensive material expertise and its products fit seamlessly into our existing portfolio”, explains Dr. Stefan Stolz, Segment Manager for Technical Ceramics at Krahn Chemie. “We have for many years been supplying manufacturers of technical ceramics with aluminium oxide, zirconia, aluminium nitride and rare earth oxides. With these new products of silicon carbide and silicon nitride, we can cover an even wider range of applications”, continues Dr. Stefan Stolz.
H.C. Starck Group is a leading global supplier of refractory metals, technical ceramics, and conductive polymers, and serves growing industries such as the electronics, chemicals, automotive, medical technology, aerospace, energy technology, and environmental technology industries, as well as mechanical engineering and tool manufacturers. H.C. Starck has manufacturing facilities in Europe, America, and Asia, and has close to 3,000 employees worldwide. Its subsidiary H.C. Starck Ceramics GmbH & Co. KG has an extensive product portfolio of highly sophisticated advanced ceramics and ceramic foils. The company is well known for its extremely high-quality products and many years of expertise in silicon carbide, silicon nitride, aluminum titanate, as well as zirconium oxide and aluminum oxide. The main products are highly refined machine and engine components, casting products, dental components, ceramics for ballistic protection and high-performance ceramic components for high-temperature fuel cells.