Abstract
Sintering of nanocrystalline powder materials by microwave heating has been studied. Two types of materials have been investigated: compacts of Al 2 O 3 ZrO 2 (Y 2 O 3) (average grain size 15 nm), prepared by the sol gel method, and TiO 2 compacts (∼100 nm) produced by the blasted-wire method. The kinetics of Al 2O 3 ZrO 2 compact densification and grain growth under microwave and conventional heating are intercompared With microwave heating densification proceeds in two stages, the first stage is characterized by a decrease in the apparent activation energy in comparison with conventional heating. It has been found that TiO 2 — ceramics with densities ∼99% of T.D. can be obtained by fast microwave heating. However, because of fast sintering, the samples exhibit incomplete anatase-rutile phase transformation and rather low values of microhardness.
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.
