Entrapment of Hard Particles into Cr(VI)-Free Conversion Layers Due to the restriction of passive layers containing Cr6+ [1], which were characterized by excellent corrosion protection due to their self-healing effect for scratches on metal surfaces, current corrosion protection systems consist of chromium (III) -containing thick layer passivation. Due to their lower hardness, current corrosion protection systems are susceptible to mechanical stress. This is particularly critical at barrel plating of screws, rivets etc. where the manufacturing process leads to damages of the corrosion protection layer and consequently to reduced corrosion resistance. To counter this problem, we point out one approach to install hard particles into the passivation layer. The entrapment of the hard particles into the passivation is detected by Glow Discharge Optical Emission Spectrometry. Comparative investigations in the corrosion chamber prove the improvement of the corrosion protection of steel parts with passivation layers containing hard particles…

for micro wave applications Modern applications with high-frequency electromagnetic fields (satellite-TV, mobile funk, WLAN technologies, radar for traffic and aerial supervision, microwave heating, drying, sintering, up to automotive and medical applications) require novel absorbing materials in order to • reduce the electromagnetic radiation exposure on biological systems or • assure the safe operation of instruments and equipments as well as the security (prevention of wireless signal leakages) or • facilitate the modern applications fundamentally and/ or with larger efficiency. We can perform such different requirements with tailored modified barium hexaferrite powders made by the “glass crystallization method” in the ternary system BaO-B2O3-Fe2O3. One way to modify the properties is to substitute the iron oxide in the raw materials mixture by pairs of other metal oxides (e.g. CoO/TiO2, CoO/RuO2, MnO/TiO2, FeO/TiO2). Thereby the original hard magnetic behaviour of the barium…

New Milling Principle for the fine and finest grinding Electromechanical milling (EMZ) is the process of using intensively moving hard magnetic milling beads together with time variable and location variable magnetic fields. EMZ is an excellent milling method to use when extremely fine materials are required. An added benefit of EMZ is that energy consumption is significantly decreased. References Halbedel, B., Kazak, O.: Potenziale eines neuen Mahlverfahrens – Die elektromechanische Zer-kleinerung (EMZ) (Potential of a New Milling Principle – The Electromechanical Milling. Chem.-Ing. Tech., Vol. 90, Issue4, pp 540-551, April 2018, DOI: 10.1002/cite.201700103 Halbedel, B., Kazak, O.: Development of electromechanical principle for wet and dry milling. 2018 IOP Conf. Ser.: Mater. Sci. Eng. 355 012021, 8 pages, DOI 10.1088/1757-899X/355/1/012021

Magnetic characterization of powders, thin films, solid bodies + Maximum flux density in the air gap: Bmax = 2 T + Sample temperature: RT ... 1000°C + Maximum sample size: powders, solid bodies : 6,35 mm x 3 mm thin films : 6,35 mm + Lowest measurable magnetic moment: Mmin = 5x 10-6 emu