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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gestrich, Tim
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Topics
Publications (9/9 displayed)
- 2023Development of Suspension Feedstocks for Thermally Sprayed Zn2TiO4 Coatingscitations
- 2021Thermal stability of TiN coated cubic boron nitride powdercitations
- 2020Influence of microstructure on hardness and thermal conductivity of hardmetals ; Einfluss der Mikrostruktur auf die Härte und Wärmeleitfähigkeit von Hartmetallencitations
- 2018Thermal behaviour of cermets and hardmetals during debinding and sinteringcitations
- 2018Mechanical and Thermophysical Properties of Hardmetals at Room and Elevated Temperatures ; Mechanische und thermophysikalische Eigenschaften von Hartmetallen bei Raumtemperatur und erhöhten Temperaturen
- 2018Grain growth inhibition of hardmetals during initial heat-upcitations
- 2017Grain Growth Inhibition of Hardmetals During Initial Heat-Up
- 2017Thermal behaviour of cermets and hardmetals during debinding and sintering
- 2014Grain growth during sintering of tungsten carbide ceramicscitations
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article
Thermal stability of TiN coated cubic boron nitride powder
Abstract
Art. 1642, 18 S. ; Wear-resistant, super hard ceramic composites based on cubic boron nitride (cBN) are of great interest to industry. However, cBN is metastable under sintering conditions at normal pressure and converts into the soft hexagonal BN (hBN). Therefore, efforts are being made to avoid this process. Besides short sintering times, the use of coated cBN-particles is a way to minimize this process. Therefore, the thermal stability of TiN coated cBN powders in high purity argon and nitrogen atmospheres up to temperatures of 1600 °C was investigated by thermogravimetry, X-ray phase analysis, scanning electron microscopy and Raman spectroscopy. The TiN coating was prepared by the atomic layer deposition (ALD)-method. The investigations showed that the TiN layer reacts in Ar at T > 1200 °C with the cBN and forms a porous TiB2 layer. No reaction takes place in nitrogen up to temperatures of 1600 °C. Nevertheless, the 20 and 50 nm thin coatings also undergo a recrystallization process during heat treatment up to temperatures of 1600 °C. ; 14 ; Nr.7