公开(公告)号：US11851378B2

公开(公告)日：2023-12-26

申请号：US17375557

申请日：2021-07-14

Applicant: Raytheon Technologies Corporation

Inventor： Brendan M. Lenz ,  Sarah A. Frith ,  Daniel L. Becerra ,  Olivier H. Sudre

IPC: C04B35/80 ,  B28B23/00 ,  C04B35/628 ,  C04B35/634 ,  C23C16/02 ,  D03D3/00 ,  D06N3/00 ,  D06M10/10

CPC classification number: C04B35/80 ,  B28B23/0006 ,  C04B35/62863 ,  C04B35/62884 ,  C04B35/6342 ,  C04B35/63416 ,  C23C16/02 ,  D03D3/005 ,  D06N3/0006 ,  D06N3/0015 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5256 ,  C04B2235/614 ,  D06M10/10

Abstract: A method of preparing a woven fabric material for use in a ceramic matrix composite includes passing a desized woven fabric tape having a first inter-filament spacing through a dispersal module configured to transform the desized woven fabric tape into a dispersed woven fabric tape having a second inter-filament spacing greater than the first inter-filament spacing. The dispersal module includes a first charging element with a charged surface and disposed to apply an electric charge to the desized woven fabric tape. The method further includes applying a polymer binder to the dispersed woven fabric tape to create a stabilized woven fabric tape having the second inter-filament spacing.

公开(公告)号：US20230227366A1

公开(公告)日：2023-07-20

申请号：US17823313

申请日：2022-08-30

Applicant: Raytheon Technologies Corporation

Inventor： Evan Benjamin Callaway ,  Brendan M. Lenz ,  Kathryn S. Read ,  Sarah A. Frith ,  Olivier H. Sudre

IPC: C04B35/565 ,  C04B35/80 ,  C04B41/00 ,  C04B41/87 ,  C04B41/50

CPC classification number: C04B35/565 ,  C04B35/80 ,  C04B41/009 ,  C04B41/87 ,  C04B41/5025 ,  C04B2235/5436 ,  C04B2235/5244

Abstract: A method for manufacturing ceramic matrix composites (CMC) and CMCs made by the method are disclosed. The method can be a manual process or an automated process, such as using a robotic system, that is used for controlled delivery of ceramic particles in a CMC fabric. The method includes identifying voids present between adjacent tows of the CMC fabric and dispensing ceramic particles into the voids. Applying the ceramic particles in the center of the voids reduces the size and volume fraction of the voids/defects, improving the homogeneity of surface texture of the preform, homogeneity of microstructure, and part model shape conformity. The method for manufacturing CMCs creates CMCs having a homogenous distribution of small pores after matrix formation that improves the interlaminar mechanical and thermal properties of the CMCs.

公开(公告)号：US20230036697A1

公开(公告)日：2023-02-02

申请号：US17390072

申请日：2021-07-30

Applicant: Raytheon Technologies Corporation

Inventor： Brendan M. Lenz ,  Sarah A. Frith ,  Olivier H. Sudre

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/657 ,  C04B35/64

Abstract: A method of manufacturing ceramic matrix composites includes producing chemical vapor deposition functionalized ceramic particles before injecting the functionalized ceramic particles into the CMC fabric. The functionalized ceramic particles are mixed with a binder solution and then dispensed into voids present between adjacent tows of the CMC fabric. Injecting the particles in the center of the voids reduces the size and volume fraction of the voids/defects, improving the homogeneity of surface texture, homogeneity of microstructure, and part model shape conformity.

公开(公告)号：US20230019661A1

公开(公告)日：2023-01-19

申请号：US17375557

申请日：2021-07-14

Applicant: Raytheon Technologies Corporation

Inventor： Brendan M. Lenz ,  Sarah A. Frith ,  Daniel L. Becerra ,  Olivier H. Sudre

IPC: C04B35/80 ,  B28B23/00 ,  D03D3/00 ,  D06N3/00 ,  C23C16/02 ,  C04B35/628 ,  C04B35/634

Abstract: A method of preparing a woven fabric material for use in a ceramic matrix composite includes passing a desized woven fabric tape having a first inter-filament spacing through a dispersal module configured to transform the desized woven fabric tape into a dispersed woven fabric tape having a second inter-filament spacing greater than the first inter-filament spacing. The dispersal module includes a first charging element with a charged surface and disposed to apply an electric charge to the desized woven fabric tape. The method further includes applying a polymer binder to the dispersed woven fabric tape to create a stabilized woven fabric tape having the second inter-filament spacing.