Annealing of thermally sprayed Ti2AlC coatings
2011 (English)In: INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, ISSN 1546-542X, Vol. 8, no 1, 74-84 p.Article in journal (Refereed) Published
Phase transformations during annealing of coatings sprayed with the High Velocity Oxy-Fuel technique using Ti2AlC powder have been investigated by in-situ x-ray diffraction. The asdeposited coatings, consisting of Ti2AlC, Ti3AlC2, TiC, Ti-Al, and oxides, are stable up to 500 °C. Ti3AlC2 forms above 550 °C and Ti2AlC forms above 700 °C by intercalation of Al into TiCx. For temperatures between 900 and 1100 °C, Ti3AlC2 and Ti2AlC decompose by losing Al to the surrounding matrix resulting in TiCx, and Al2O3. The thermal expansion coefficient between ambient and 700°C is 11.9·10-6 K-1. The thermal diffusivity at room temperature is 1.9·10-6 m2/s.
Place, publisher, year, edition, pages
Blackwell , 2011. Vol. 8, no 1, 74-84 p.
National CategoryNatural Sciences
IdentifiersURN: urn:nbn:se:liu:diva-57516DOI: 10.1111/j.1744-7402.2010.02569.xISI: 000285968600009OAI: oai:DiVA.org:liu-57516DiVA: diva2:326253