Patent No.: 9,458,727 (get PDF)

Title: Turbine component having a low residual stress ferromagnetic damping coating

Assignee: Shen; Mo-How Herman

Abstract: A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in at least partially molten powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate and solidifying in less than 3 seconds to create a ferromagnetic damping coating, resulting in a coated substrate. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The balanced coating residual stress is within a range of .+-.50 MPa without having to subject the coated substrate to a high temperature annealing process. The resulting coated substrate exhibits a high damping capacity.

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