C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 4/12 (2006.01)
Patent
CA 2460296
In the method for the coating of a substrate (3), a hybrid coating method is carried out with a thermal process jet (2) which makes it possible to combine the properties of a thermal spray method with those of a reactive vapour phase deposition. The properties of the process jet are determined by controllable process parameters, in particular by the parameters of pressure, enthalpy, composition of a process gas mixture (G) and composition and form of application of a coating material (M). The coating material is partly or completely evaporated in dependence on the controllable parameters. The phases of the coating material present in vapour form (23b) and, optionally, in condensed, i.e. solid or liquid form, (23a) are at least partly deposited on the substrate. The relative proportion of vapour and/or of condensed phase for the coating material (23) transported in the process jet is determined by a diagnostic measuring method (D). The controllable process parameters are set with respect to desired values using such gained measured data (65). A regulation (C) for the direct manufacture of the coating, in particular of a multi-layer coating system (4), is carried out with respect to these desired values, which correspond to a pre-determined vapour proportion or to a proportion of a condensed phase.
Barbezat Gerard
Hawley David
Refke Arno
Schmid Richard K.
Fetherstonhaugh & Co.
Sulzer Metco Ag
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