The Boeing Company

Erik D Sapper

Joseph H Osborne

Anthony Ewart Hughes

James Ivan Mardel

Paul Andrew White

Tracey Anne Markley

Timothy Graham Harvey

Kristen Smith Williams

Sean M Pennell

Ivan Stewart Cole

Patrick John Kinlen

Andrew Gerhard Wallburg

Ivan Stuart Cole

Christina C Grumbach

Andrew M Zweig

Eileen Olga Kutscha

Erica Nicole Bilodeau

The present disclosure is directed to processes, compositions and agents for inhibiting corrosion in various substrates, for example metal substrates. The present disclosure is also directed to corrosion inhibitors comprising organometallic polymers such as metal-organic frameworks (MOFs), including compositions and processes comprising MOFs for inhibiting corrosion in metal substrates.

Polymeric agents and compositions for inhibiting corrosion

The present disclosure relates to agents, compositions, and methods for inhibiting corrosion in various substrates, for example in metal substrates. The present disclosure also relates to compositions for inhibiting corrosion comprising at least one organic heterocyclic compound and at least one metal salt or mixed metal salt selected from rare earth, alkali earth and transition metals.

Compositions for inhibiting corrosion

Processes, compositions and agents are included for inhibiting corrosion in various substrates, for example metal substrates. Corrosion inhibitors include organometallic polymers such as metal-organic frameworks (MOFs), including compositions and processes comprising MOFs for inhibiting corrosion in metal substrates. In some aspects, a method of protecting a substrate from corrosion includes applying a protective composition including a corrosion inhibitor to the surface of a substrate, where the corrosion inhibitor includes a metal organic framework (MOF).

Process for applying a metal-organic framework-containing corrosion resistant coating to a substrate

Corrosion inhibition systems, including coated substrates, coating materials and corrosion inhibition compounds, and methods of making the same are disclosed. These systems and methods include corrosion inhibition compounds that are responsive to corrosion at a surface, releasing active inhibitor groups upon a corrosion stimulus. The active inhibitor groups are selected to block corrosion at the surface by inhibiting oxidation reactions, reduction reactions and/or by forming a passivation layer. Corrosion inhibition compounds may be linear polymers that include the inhibitor groups linked together with labile linkages that are disulfide or metal-sulfide bonds.

Systems, compositions, and methods for corrosion inhibition

Composition for inhibiting corrosion

In one aspect, a material system comprises a metal substrate and a first coating layer disposed on the metal substrate. A first electrode is directly disposed on the first coating layer, and a second electrode is disposed on the metal substrate. In one aspect, a method for determining material performance includes flexing a material system and detecting impedance of the material system with an electrochemical impedance spectrometer. The material system has a metal substrate, a first coating layer disposed on the metal substrate, a first electrode directly disposed on the first coating layer, and a second electrode disposed on the metal substrate.

Manufacture electrodes for electrochemical monitoring

Aspects described herein generally relate to apparatus and methods for determining operational performance of material systems. Apparatus generally comprise a salt fog chamber having a fixture support having material system flexing components to test corrosion of an aircraft material system. In one aspect, a material performance chamber comprises a salt fog chamber and a jaw configured to flex a material system. Methods for determining corrosion include exposing a material system, such as a panel, to salt fog and flexing the material system at a frequency. In one aspect, a method for determining corrosion includes exposing a material system to a salt fog. The pH of the salt fog is from about 3.0 to about 9.0 and flexing the material system at a frequency from about 0.1 Hz to about 60 Hz.

Cyclic flexing salt-spray chamber and methods

Perturbed oscillatory kinetics electrochemistry methods include methods of determining an electrochemical response of a test coupon to a mechanical load. Such methods include applying a cell of electrolyte solution to a test region on a test coupon, contacting the electrolyte solution with a counter electrode, and applying a mechanical load to the test coupon to produce a deflection event. Additionally, methods include measuring a pre-event value of an electrical parameter of the test coupon, before applying the mechanical load, and measuring a post-event value of the electrical parameter, after applying the mechanical load. Methods include determining an electrochemical response of the test coupon to the mechanical load based on the post-event value and the pre-event value.

Perturbed oscillatory kinetics electrochemistry systems and methods

Corrosion inhibition systems, including coated substrates, coating materials and corrosion inhibition compounds, and methods of making the same are disclosed. These systems and methods include corrosion inhibition compounds that are responsive to corrosion at a surface, releasing active inhibitor groups upon a corrosion stimulus. The active inhibitor groups are selected to block corrosion at the surface by inhibiting oxidation reactions, reduction reactions and/or by forming a passivation layer.

Global icephobic performance of a passive deicing structure may be achieved by including one or more ice nucleating zones that are configured, preselected, and/or arranged to promote selective formation of ice. Ice nucleation zones may be configured, preselected, and/or arranged to form ice that is weakly adherent and, hence, may be removed by sufficient shear force. Ice nucleation zones typically include nucleating particles to promote selective ice formation. Passive deicing structures typically include both ice nucleation zones and ice resisting zones, arranged to facilitate ice removal by shear force. Passive deicing structures may be used on apparatuses such as vehicles (e.g., aircraft) to mitigate the effects of ice formation on exposed surfaces.

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St. Louis, MO, United States of America

Erik D Sapper