Alstom Technology Limited

Dietrich Eckardt

Maxim Konter

Alexander Anatolievich Khanin

Hans-Peter Bossmann

Martin Balliel

Christoph Toennes

Victor Vladimirovich Odinokov

Klaus Erich Schneider

Alexander Bone

Andreas Weiland

A method for designating a component, coated with a heat insulation layer including zirconium dioxide (ZrO) stabilized with yttrium oxide (YO) [YSZ], and for determining its operating time or operating temperature is provided. The method includes doping the heat insulation layer and marking the doped heat insulation layer, with at least one metal oxide in at least one surface region of the component. The metal oxide is selected such that the doped region of YSZ is visible or can be made optically visible in order to designate the component. The method also includes comparing a slower or faster change in lattice parameters of the doped YSZ region, as compared with undoped YSZ, and determining the operating time of the component under temperature by comparing the lattice parameters with a known calibrating characteristic curve.

Method for designating a component having a heat insulation layer and for determining its operating time

Turbo machine blade platform

Turbo machine double blade and platform

A high-temperature protection layer contains (% by weight) 23 to 27% Cr, 4 to 7% Al, 0.1 to 3% Si, 0.1 to 3% Ta, 0.2 to 2% Y, 0.001 to 0.01% B, 0.001 to 0.01% Mg and 0.001 to 0.01% Ca, remainder Ni and inevitable impurities. Optionally, the Al content is in a range from over 5 up to 6% by weight.

High-temperature protection layer

A method of casting a directionally solidified (DS) or single crystal (SX) article with a casting furnace having a heating chamber (), a cooling chamber (), a separating baffle () between the both chambers includes a first step in which the shell mould () is filled with liquid metal (), and the liquid metal () is directionally solidified by withdrawing the shell mould () from the heating to the cooling chamber (). An inert gas impinges from nozzles () arranged below the baffle () on the shell mould () and in steep transitions in outer surface area of the shell mould () the flow of the inert gas () is reduced or even stopped and when a protruding geometrical feature has passed the impingement area of the gas jets, the gas flow () is restored to a value adjusted to the geometry of the cast part presently passing the impingement area.

Method for casting a directionally solidified article

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Ennetbaden, Switzerland

Dietrich Eckardt