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ESK NEWS

Successful quality management system
July 27, 2009

On July 23, ESK Ceramics GmbH & Co. KG successfully passed the surveillance audit of its quality management system to ISO 9001:2008 and 14001:2004. In the audited departments, the two auditors from TÜV Süd were able to satisfy themselves that the ESK quality management system is not only systematically implemented but also developing continuously.

ESK Successfully Recertifies for the Automotive Industry
July 25, 2009

ESK Ceramics GmbH & Co. KG has successfully renewed the certification of its quality management system to ISO TS 16949 in the field of surface engineering. This ESK business division primarily produces high-friction coatings on materials for the automotive industry.

BORON CARBIDE, CALCIUM HEXABORIDE, ZIRCONIUM DIBORIDE AS ANTIOXIDANTS

BORON CARBIDE (B4C), CALCIUM HEXABORIDE (CaB6) AND ZIRCONIUM DIBORIDE (ZrB2) POWDERS AS ANTIOXIDANTS FOR REFRACTORY COMPOSITIONS

The steel industry predominantly uses carbon-containing bricks and compositions, and their service life is an important issue. The limiting factor here is particularly the oxidation of carbon, which occurs rapidly at temperatures >1500°C. Antioxidants are therefore important for improving lifetimes. Compared to conventional metal antioxidants, ceramic antioxidants from ESK offer special protection, particularly against very aggressive alloys.

ESK offers the following antioxidants:

  • TETRABOR® boron carbide antioxidant
    TETRABOR® boron carbide (B4C) has a proven track record particularly for use in Al2O3-C slide gates and various isostatically pressed parts and compositions.     TETRABOR® can be supplied in various grain sizes.
  • Calcium hexaboride antioxidant
    Calcium hexaboride (CaB6) is particularly used with unfired MgO-C bricks. The standard grain size is 400 mesh
  • Zirconium diboride antioxidant
    Zirconiumdiboride (ZrB2) additionally improves the corrosion resistance when used in ZrO2-C compositions in submerged nozzles and shroud tubes. The standard grain size is 400 mesh