M. Vilasi, Michel François, R. Podor
Jan 9, 1998
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Influential Citations
70
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Quality indicators
Journal
Journal of Alloys and Compounds
Abstract
Efforts to improve at high temperature the oxidation resistance of pure niobium or commercial niobium alloys have led to the development of a pack cementation process for the co-deposition of Si, Ti, Cr and Fe. Owing to the knowledge of the quaternary Nb(Ti)-T-Cr-Siphase diagrams (T5Fe or Co or Ni) and of the crystallographic features of phases present in the silicide coatings, new protective coatings have been applied on pure niobium and Cb752 alloy. The results of the crystallographic study of three new silicides isostructural with Nb Fe CrSi , in which Nb is substituted by Ti and Fe by Co or Ni are reported. The oxidation performances of two 33 6 new coatings mainly consisting of such a silicide are also outlined. © 1998 Elsevier Science S.A.