Metallic coating of improved life
Patent 4775602 Issued on October 4, 1988. Estimated Expiration Date: 
July 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3922396 Diffusion coating method Superalloy article cleaning and repair method Method for improving a property of an alloy High temperature braze repair of superalloys Superalloy article repair method and alloy powder mixture Homogenous alloy powder Patent #: 4478638 InventorAssigneeApplicationNo. 07/069998 filed on 07/06/1987US Classes:428/668, Group VIII or IB metal-base component29/402.18, By applying fluent material, e.g., coating, casting427/142, Metal article427/328, Metal coating428/609, Macroscopically anomalous interface between layers428/614, Laterally noncoextensive components (e.g., embedded, etc.)428/680Ni-base componentExaminersPrimary: Stallard, WaylandAttorney, Agent or FirmInternational ClassC23C 4/02 (20060101)AbstractA method for improving oxidation resistance life of a metallic coating deposited on a metallic alloy including boron treats the alloy to reduce the boron prior to depositing the coating. The article provided by using a diffusion coating method has a diffusion zone between the coating and the alloy substrate characterized by the substantial absence of boride needles traversing the diffusion zone from the coating into the alloy.Other References
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