Mikroanalytische Untersuchungen hochwarmfester Legierungen für Gasturbinenschaufeln

High Temperature Corrosion on high temperature materials – Metallographic, scanning electron microscopic and microanalytical tests

“…The Auger spectrum and the element distribution for Ni and S for a grain surface with zirconium sulphide deposit are shown as an example in this figure. in an earlier project [64]. A metallographic investigation of this melt confirmed these findings.…”

“…The elements diffusing in the surface in this way can combine with the elements of the alloy to form new phases in which one or several elements are contained simultaneously. One advantage of this is the fact that the diffusion coatings generally have a specially homogeneous connection to the base material and only lead to slight alterations in the dimensions of the component [63][64][65][66].…”

“…The properties required of gas turbine blades are provided these days by complex Ni-and Co-base alloys [64]; here, high temperature corrosion is often the influencing factor which limits the length of life.…”