Microstructural characterization of a Pt-aluminide coated IN738LC

Authors
Calliari, I Dabala, M Zambon, A
Citation
I. Calliari et al., Microstructural characterization of a Pt-aluminide coated IN738LC, J MAT ENG P, 10(3), 2001, pp. 258-262
Citations number
13
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN journal
10599495 → ACNP
Volume
10
Issue
3
Year of publication
2001
Pages
258 - 262
Database
ISI
SICI code
1059-9495(200106)10:3<258:MCOAPC>2.0.ZU;2-1
Abstract
In this paper, the microstructural and chemical characterization of the IN7 38LC superalloy coated with a Pt-Cr modified aluminide coating, is presente d. The effects of aging in air at 850 degreesC on superalloy and coating mi crostructures were investigated. The growth of gamma' precipitates in IN738 LC follows the Wagner-Lifshits model. The positive effect of Pt in preventi ng refractory element diffusion into the outer coating is not influenced by the aging. A moderate precipitation of TCP phases has been noted at the co ating-superalloy interface.