Abstract
Al2O3\\Ti composites presenting a range of metal to ceramic ratios were fabricated using SPS technology and subsequently characterized. A titanium hydride that decomposes in the 600–700°C temperate range was used as the source of Ti. The composite densification process was initiated at 825°C, and reached a maximum densification rate at 1150°C. Microstructural analysis revealed the homogenous distribution of sub-micron-sized Al2O3 grains and micron-sized Ti grains. Thus, the fine microstructure of the composites provided improvements in hardness, Young׳s moduli and flexure strengths. The composites displayed lower resistance to fracture than did pure alumina, with cracks largely propagating around the alumina grains, which indicates that the ceramic–metal interface is weak. Finally, the formation of a Ti–Al–O solid solution at the metal/ceramic interface was detected by scanning electron microscopy and X-ray diffraction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
