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.