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Sitek R.♦, Bochenek K., Maj P.♦, Marczak M.♦, Żaba K.♦, Kopeć M., Kaczmarczyk G.♦, Kamiński J.♦, Hot-Pressing of Ti-Al-N Multiphase Composite: Microstructure and Properties,
Applied Sciences, ISSN: 2076-3417, DOI: 10.3390/app15031341, Vol.15, No.1341, pp.1-15, 2025 Abstract:
This study focuses on the development and characterization of a bulk Ti-Al-N
multiphase composite enriched with BN addition and sintered through hot pressing. The
research aimed to create a material with optimized mechanical and corrosion-resistant
properties suitable for demanding industrial applications. The composite was synthesized using a powder metallurgy approach with a mixture of AlN, TiN, and BN powders, processed under a high temperature and pressure. Comprehensive analyses, including microstructural evaluation, hardness testing, X-ray tomography, and electrochemical corrosion assessments, were conducted. The results confirmed the formation of a multiphase microstructure consisting of TiN, Ti₂AlN and Ti₃AlN phases. The microstructure was uniform with minimal porosity, achieving a hardness within the range of 500–540 HV2. Electrochemical tests revealed the formation of a passive oxide layer that provided moderate corrosion resistance in chloride-rich environment. However, localized pitting corrosion was observed under extreme conditions. The study highlights the potential of a BN admixture to enhance mechanical and corrosion-resistant properties and suggests directions for further optimization in sintering processes and material formulations. Keywords:
AlN-TiN(BN) composite,hot-pressing,μCT,corrosion resistance Affiliations:
| Sitek R. | - | Warsaw University of Technology (PL) | | Bochenek K. | - | IPPT PAN | | Maj P. | - | Warsaw University of Technology (PL) | | Marczak M. | - | other affiliation | | Żaba K. | - | other affiliation | | Kopeć M. | - | IPPT PAN | | Kaczmarczyk G. | - | other affiliation | | Kamiński J. | - | other affiliation |
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