公开(公告)号：US20220097132A1

公开(公告)日：2022-03-31

申请号：US17546464

申请日：2021-12-09

Applicant: Raytheon Technologies Corporation

Inventor： Ying She ,  Aaron T. Nardi ,  John A. Sharon

IPC: B22F1/00 ,  B33Y70/00 ,  C21D9/00

Abstract: A system for treatment of atomized powder including a fluidized bed operable to treat feedstock alloy powders. A method of treating atomized powder including communicating an inert gas into a fluidized bed; communicating an atomized powder into the fluidized bed; and heating the atomized powder in the fluidized bed, eject the treated powders out of the fluidized bed to quench the powders.

公开(公告)号：US10814580B2

公开(公告)日：2020-10-27

申请号：US15810192

申请日：2017-11-13

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Wayde R. Schmidt ,  James T. Beals ,  Aaron T. Nardi

IPC: B32B3/00 ,  F01D5/28 ,  B32B7/02 ,  B32B3/30 ,  B82Y30/00

Abstract: A gas turbine engine includes an airfoil having a core that has a first hardness and a surface on the core. The surface includes a plurality of geometric features that have a second, greater hardness. The geometric features define a surface porosity by area percent and a corresponding surface solidity by area percent. The surface includes a ratio of the surface solidity divided by the surface porosity that is 1.8 or greater. The geometric features and the ratio establish the surface to be hydrophobic, and the second, greater hardness and the ratio establish an erosion rate of the surface that is equal to or less than an erosion rate of the core under identical erosion conditions.