Effect of sputtered TiAlCr coatings on oxidation and hot corrosion resistance of Ti-24Al-14Nb-3V

Citation
Fh. Wang et al., Effect of sputtered TiAlCr coatings on oxidation and hot corrosion resistance of Ti-24Al-14Nb-3V, J MAT SCI T, 17(5), 2001, pp. 501-506
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN journal
1005-0302 → ACNP
Volume
17
Issue
5
Year of publication
2001
Pages
501 - 506
Database
ISI
SICI code
1005-0302(200109)17:5<501:EOSTCO>2.0.ZU;2-2
Abstract
The effect of sputtered Ti-50Al-10Cr and Ti-50Al-20Cr coatings on both isot hermal and cyclic oxidation resistance at 800 similar to 900 degreesC and h ot corrosion resistance at 850 degreesC of Ti-24Al-14Nb-3V was investigated . Results indicated that Ti-24Al-14Nb-3V alloys exhibited poor oxidation re sistance due to the formation of Al2O3+TiO2+AlNbO4 mixed scales in air at 8 00 similar to 900 degreesC and poor hot corrosion resistance due to the spa llation of scales formed in Na2SO4+K2SO4 melts at 850 degreesC. Both Ti-50A l-10Cr and Ti-50Al-20Cr coatings remarkably improved the oxidation and hot corrosion resistance of Ti-24Al-14Nb-3V alloy.