公开(公告)号：US20200002550A1

公开(公告)日：2020-01-02

申请号：US16534493

申请日：2019-08-07

Applicant: The Boeing Company

Inventor： Vijaykumar S. IJERI ,  Om PRAKASH ,  Stephen P. GAYDOS ,  Raghavan SUBASRI ,  Kalidindi Ramachandra SOMA RAJU ,  Dendi Sreenivas REDDY

IPC: C09D5/08

Abstract: An alkoxysilane is contacted with water and an inorganic acid to form a first composition. A zirconium alkoxide is contacted with an organic acid to form a second composition. One or more alkoxysilanes and an organic acid are contacted with a mixture of the first and second compositions to form a sol-gel composition, to which a photoinitiator is added. The sol-gel composition has a ratio of a number of moles of silicon to a number of moles of zirconium (nSi/nZr) ranging from about 2 to about 10. The sol-gel composition is applied on a substrate (e.g., an aluminum alloy substrate) multiple times to form multiple sol-gel layers, and at least one of the sol-gel layers is cured by UV radiation. The multiple sol-gel layers are then thermally cured.

公开(公告)号：US20190390067A1

公开(公告)日：2019-12-26

申请号：US16533647

申请日：2019-08-06

Applicant: The Boeing Company

Inventor： Vijaykumar S. IJERI ,  Om PRAKASH ,  Stephen P. GAYDOS ,  Raghavan SUBASRI ,  Kalidindi Ramachandra SOMA RAJU ,  Dendi Sreenivas REDDY

IPC: C09D5/08 ,  C09D5/10 ,  C09D183/08 ,  C23C18/12

Abstract: A layered tetravalent metal phosphate composition (e.g., a layered zirconium phosphate composition) and a first corrosion inhibitor (e.g., cerium (III), a vanadate, a molybdate, a tungstate, a manganous, a manganate, a permanganate, an aluminate, a phosphonate, a thiazole, a triazole, and/or an imidazole) is dispersed in an aqueous solution and stirred to form a first solution. A precipitate of the first solution is collected and washed to form a first corrosion inhibiting material (CIM), which includes the first corrosion inhibitor intercalated in the layered tetravalent metal phosphate composition. The first CIM is added to a first sol-gel composition to form a first CIM-containing sol-gel composition. The first CIM-containing sol-gel composition is applied on a substrate to form a CIM-containing sol-gel layer, cured by UV radiation, and thermally cured to form a corrosion-resistant coating. One or more additional sol-gel composition may be applied on the substrate.

公开(公告)号：US20230211582A1

公开(公告)日：2023-07-06

申请号：US18121125

申请日：2023-03-14

Applicant: THE BOEING COMPANY

Inventor： Stephen P. GAYDOS ,  Vijaykumar S. IJERI ,  Om PRAKASH ,  Shashi Kant TIWARI ,  Raghuvir SINGH ,  Sharma PASWAN ,  Lokesh C. PATHAK

IPC: B32B15/01 ,  C25D5/18 ,  C25D5/10 ,  C25D5/00 ,  C25D3/56

CPC classification number: B32B15/013 ,  C25D5/18 ,  C25D5/10 ,  C25D5/623 ,  C25D3/565 ,  B32B2311/20 ,  B32B2250/42

Abstract: The present disclosure provides electrolyte solutions for electrodeposition of zinc-manganese alloys, methods of forming electrolyte solutions, methods of electrodepositing zinc-manganese alloys, and multilayered zinc-manganese alloys. An electrolyte solution for electroplating can include a metal salt, boric acid, an alkali metal chloride, polyethylene glycol, and a hydroxy benzaldehyde. An electrolyte solution can be formed by dissolving a metal salt, boric acid, an alkali metal chloride, polyethylene glycol, and a hydroxy benzaldehyde in water or an aqueous solution. Electrodepositing zinc-manganese alloys on a substrate can include introducing a cathode and an anode into an electrolyte solution comprising a metal salt, boric acid, an alkali metal chloride, polyethylene glycol, and a hydroxy benzaldehyde. Electrodepositing can further include passing a current between the cathode and the anode through the electrolyte solution to deposit zinc and manganese onto the cathode.

公开(公告)号：US20230019695A1

公开(公告)日：2023-01-19

申请号：US17376618

申请日：2021-07-15

Applicant: The Boeing Company

Inventor： Kamaraj KANDHASAMY ,  Om PRAKASH ,  Patrick J. KINLEN ,  Stephen P. GAYDOS

IPC: C09D5/24 ,  C09D7/40 ,  C09D7/65 ,  C09D7/20 ,  H01B1/12

Abstract: A conductive polymer coating composition including a conductive fibrillated structure and a base polymer, wherein the conductive fibrillated structure includes a fibrillated polymer and a conductive polymer grafted on the fibrillated polymer, and wherein the conductive polymer coating composition has an electrical conductivity from about 10−5 S/cm to about 10+1 S/cm and a thermal conductivity from about 1.1 W/m K to about 3 W/m K.

公开(公告)号：US20210387239A1

公开(公告)日：2021-12-16

申请号：US16900828

申请日：2020-06-12

Applicant: THE BOEING COMPANY

Inventor： Om PRAKASH ,  Sandeep TRIPATHI ,  Megha SAHU ,  Kamaraj KANDHASAMY ,  Carolyn L. KUPPER

IPC: B08B9/035

Abstract: The present disclosure provides a cleaning system, including a first sub-chamber, a second sub-chamber adjacent to the first sub-chamber, and a third sub-chamber adjacent to the second sub-chamber. A first divider is positioned between the first and the second sub-chambers. A second divider is positioned between the second and the third sub-chambers. A vacuum system is coupled to the third sub-chamber to generate a vacuum pressure in the third sub-chamber that is less than a pressure of the first sub-chamber to create a pressure differential to induce a pressurized flow of a first cleaning media from the first sub-chamber to the third sub-chamber through an internal passage of a component positioned in the second sub-chamber. A filtering system is coupled to the first sub-chamber and the third sub-chamber to remove and filter the first cleaning media from the third sub-chamber and return the first cleaning media to the first sub-chamber.

公开(公告)号：US20210340686A1

公开(公告)日：2021-11-04

申请号：US16863282

申请日：2020-04-30

Applicant: THE BOEING COMPANY

Inventor： Vijaykumar S. IJERI ,  Om PRAKASH ,  Stephen P. GAYDOS

IPC: C25D3/44

Abstract: In certain aspects, a coated steel substrate comprises a single or multiple-layer electroplated aluminum coating over a steel substrate. The multiple-layer electroplated aluminum coating comprises one or more porous layers and one or more compact layers. The one or more porous layers comprise a material selected from a group consisting of aluminum and aluminum alloys. The one or more compact layers comprise a material selected from a group consisting of aluminum and aluminum alloys. In certain aspects, a method of depositing a multiple-layer aluminum coating over a steel substrate includes electroplating one or more porous aluminum layers over the steel substrate. The one or more porous aluminum layers comprise a material selected from a group consisting of aluminum and aluminum alloys. One or more compact aluminum layers are electroplated over the steel substrate. The one or more compact aluminum layers comprise a material selected from a group consisting of aluminum and aluminum alloys.

公开(公告)号：US20200101663A1

公开(公告)日：2020-04-02

申请号：US16146306

申请日：2018-09-28

Applicant: The Boeing Company

Inventor： Om PRAKASH ,  Araveti GUPTA

IPC: B29C64/214 ,  B29C64/336 ,  B29C64/245 ,  B29C64/153 ,  B29C64/255

Abstract: An additive manufacturing system including a build plate and a powder spreading unit having a plurality of recoater blades configured to spread powder onto the build plate. The powder spreading unit including a base member, and the plurality of recoater blades is coupled to the base member and configured to spread powder onto the build plate.

公开(公告)号：US20180355470A1

公开(公告)日：2018-12-13

申请号：US15678757

申请日：2017-08-16

Applicant: THE BOEING COMPANY

Inventor： Stephen P. GAYDOS ,  Vijaykumar S. IJERI ,  Om PRAKASH ,  Suman K. MISHRA ,  Raghuvir SINGH ,  Sharma PASWAN ,  Lokesh C. PATHAK

IPC: C23C14/16 ,  C22C21/10 ,  C22C21/06 ,  C23C14/35 ,  C23C14/34

Abstract: The present disclosure provides alloys for coating a steel substrate, the alloys comprising aluminum and one or more of zinc, magnesium, and zirconium. The alloy coatings have a percent total pore volume of about 5% or less and an average pore diameter about 10 microns or less. The present disclosure further provides methods of depositing aluminum alloy onto a substrate, magnetron sputtering targets, and methods for making coated steel.