TY - JOUR
T1 - Substrate and bond coat compositions
T2 - factors affecting alumina scale adhesion
AU - Pint, B. A.
AU - Wright, I. G.
AU - Lee, W. Y.
AU - Zhang, Y.
AU - Prüßner, K.
AU - Alexander, K. B.
PY - 1998/5/1
Y1 - 1998/5/1
N2 - Thermally grown oxide scales that form beneath ZrO2 top coats play an important role in determining the performance of thermal barrier coatings. Numerous factors, including the composition of both the alloy substrate and the bond coat, affect adhesion of the α-Al2O3 scale. Three areas of focus in the formation of an 'ideal', adherent scale encompass: (1) migration of Al and other elements in the metal substrate, (2) segregation of elements to the metal-scale interface and the scale grain boundaries, and (3) generation of stresses in the scale. Examples of the effects of reactive elements, Pt, indigenous S, and reaction temperature on scale adhesion are discussed.
AB - Thermally grown oxide scales that form beneath ZrO2 top coats play an important role in determining the performance of thermal barrier coatings. Numerous factors, including the composition of both the alloy substrate and the bond coat, affect adhesion of the α-Al2O3 scale. Three areas of focus in the formation of an 'ideal', adherent scale encompass: (1) migration of Al and other elements in the metal substrate, (2) segregation of elements to the metal-scale interface and the scale grain boundaries, and (3) generation of stresses in the scale. Examples of the effects of reactive elements, Pt, indigenous S, and reaction temperature on scale adhesion are discussed.
UR - http://www.scopus.com/inward/record.url?scp=0032076419&partnerID=8YFLogxK
U2 - 10.1016/S0921-5093(97)00851-4
DO - 10.1016/S0921-5093(97)00851-4
M3 - Article
AN - SCOPUS:0032076419
SN - 0921-5093
VL - 245
SP - 201
EP - 211
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 2
ER -