Abstract
The influence of powder properties on the sintering behaviour, the microstructural development and the mechanical properties of hot isostatically pressed (HIPed) zirconium nitrides were investigated. The results show that the densification behaviour is dependent on the powder characteristics, more precisely the grain morphology and size, and oxygen, carbon and metallic impurity contents. The mechanical properties are controlled mainly by the amount of porosity and the presence of a complex intergranular phase in direct relation to the purity of the starting powder. The differences in the fracture strength and toughness between the two grades are perceptible. On the other hand, the thermal shock resistance to fracture initiation, as well as the elastic parameters of both dense materials, are similar.
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Alexandre, N., Desmaison-Brut, M., Valin, F. et al. Mechanical properties of hot isostatically pressed zirconium nitride materials. J Mater Sci 28, 2385–2390 (1993). https://doi.org/10.1007/BF01151669
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DOI: https://doi.org/10.1007/BF01151669