Abstract
Oxidation protection of temporary enamel coatings with or without additions of quartz and kaolin on Ti–6Al–4V alloy at its hot working temperature of 1200 °C was studied. After exposure for 5 h, the bare alloy has suffered from oxidation and sever oxygen ingression that gives rise to a deep hardening layer of 2250 μm. Enamel coating improves largely its oxidation resistance. An alloy/Ti5Si3/Al2O3/enamel layered structure forms at interface, which accompanies with the enamel coating retarding oxygen ingression. With addition of quartz and kaolin particles, the enamel composite coating is more effective in prohibiting the inward diffusion of oxygen than the pure enamel one. The incorporated ceramic particles are able to enhance viscosity of enamel, thus reducing diffusivity of oxygen through it while increasing the stability of the interfacial layered structure.
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.
