公开(公告)号：US11236023B2

公开(公告)日：2022-02-01

申请号：US16183276

申请日：2018-11-07

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Terence Whalen ,  Bahram Jadidian ,  Reza Oboodi

IPC: C04B41/50 ,  C03C8/02 ,  C03C8/16 ,  C04B41/45 ,  C04B41/52 ,  C04B41/53 ,  C04B41/86 ,  C04B41/89 ,  C04B41/91

Abstract: A method for forming a protective coating on a surface of a ceramic substrate includes combining a rare-earth oxide, alumina, and silica to form a powder, etching the surface of the ceramic substrate, applying the powder on the etched surface in an amount of from about 0.001 to about 0.1 g/cm2 to reduce capture of bubbles from off-gassing of the ceramic substrate, heating the powder for a time of from about 5 to about 60 minutes to a temperature at or above the melting point such that the powder melts and forms a molten coating on the surface that has a minimized number of bubbles, and cooling the molten coating to ambient temperature to form the protective coating disposed on and in direct contact with the surface of the ceramic substrate such that the protective coating has a thickness of less than about 1 mil.

公开(公告)号：US20210180190A1

公开(公告)日：2021-06-17

申请号：US16701974

申请日：2019-12-03

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Reza Oboodi ,  James Piascik ,  Donald M. Olson ,  Natalie Kruk ,  Terence Whalen

IPC: C23C18/12 ,  C23C18/04 ,  F01D5/22 ,  F01D25/00 ,  C04B41/50 ,  F23R3/00 ,  C04B41/00 ,  F01D5/00 ,  F01D5/28 ,  C04B41/85

Abstract: A coated turbomachine component includes a ceramic component body having a principal surface. The component includes a high temperature coating. The high temperature coating includes a sintered coating body bonded directly to and intimately contacting the principal surface of the ceramic component body. The sintered coating body has a minimum porosity adjacent the principal surface and a maximum porosity at a location further from the principal surface, as taken along an axis orthogonal to the principal surface.

公开(公告)号：US20190263718A1

公开(公告)日：2019-08-29

申请号：US15903347

申请日：2018-02-23

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Terence Whalen

IPC: C03C27/04 ,  C03C3/068 ,  C01B33/20 ,  C01F17/00 ,  B32B9/00 ,  B32B17/06

Abstract: Methods are provided for forming high temperature coating over ceramic components, such as ceramic turbomachine components. In various embodiments, the method includes the step or process of at least partially filling a reactor vessel with a reaction solution containing a solution-borne rare earth cation source. A silicon-containing surface region of a ceramic component is submerged in the reaction solution, and a solvothermal growth process is carried-out. During the solvothermal growth process, the reaction solution is subject to elevated temperature and pressure conditions within the reactor vessel in the presence of a silicate anion source, which reacts with the solution-borne rare earth cation source to grow a rare earth silicate layer over the silicon-containing surface region of the ceramic component.