Abstract
Using tetraethyl orthosilicate and aluminum tri-sec-butoxide as raw materials, two series of mullite gels were prepared, one involving a chemical modification of aluminum alkoxide by ethylacetoacetate, the other one by reacting both alkoxides in a non-homologous Alcohol, I.e. isopropyl alcohol or 2-methoxyethanol. For the first route the excess water or basic conditions promote the formation of nanosized powders that appear X-ray amorphous after the crystallization exotherm on the DTA trace. The same result is obtained for the second route with isopropanol as solvent. The sample preparation strongly influences the ceramic densifications that can vary from 70 to 93% of the theoretical value after 1200 °C calcination.
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.
