Multi-layer Coated Metal Substrates with Zinc and Aluminum

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Solution Overview

Problem

Existing coatings for metal substrates lack effective corrosion resistance without using carcinogenic materials, and there is a need for improved systems and methods for coating metal substrates to enhance their protective properties.

Innovation Solution

A coated metal substrate system comprising a first coating layer with zinc particles and a binder, followed by a second coating layer with aluminum metal particles, an alkaline earth metal compound, and a second organic binder, providing enhanced corrosion resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional corrosion inhibitor materials are used in coatings, then corrosion resistance is improved, but carcinogenic risks are introduced

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidcarcinogenic materials

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and removes carcinogenic materials from the coating formulation while retaining the essential corrosion protection function through alternative safe ingredients, directly resolving the contradiction between effectiveness and safety

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the harmful effect of traditional corrosion inhibitors into a beneficial outcome by using safe alternative materials that provide equivalent or superior corrosion protection without carcinogenic risks, transforming a potential harm into a safety benefit

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If multi-layer coating systems are implemented, then corrosion protection is enhanced, but manufacturing complexity increases

Engineering Contradiction:

Improvecorrosion protectionVSAvoidcoating system structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the coating system into distinct functional layers (primer layer with zinc particles, intermediate layer, topcoat layer) where each layer performs a specific corrosion protection function, enabling enhanced overall protection while maintaining manageable manufacturing complexity through clear functional separation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs composite material structures combining different particle types (zinc, aluminum, alkaline earth metal compounds) and binder systems in layered configurations, achieving superior corrosion protection through material synergies while organizing complexity into standardized composite formulations

Inventive Principle:

Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system achieves significant corrosion resistance for metal substrates while avoiding the use of carcinogenic materials, ensuring a protective and safe coating solution.

Implementation Method 1

a first coating layer comprising zinc particles and a binder comprising a first organic film-forming binder or an inorganic binder, wherein the first coating layer comprises zinc particles in an amount of at least 75% by weight

Methodology Applied

Scientific EffectGalvanic protection:

Implementation Method 2

a second coating layer on the first coating layer, the second coating layer comprising aluminum metal particles, an alkaline earth metal compound, and a second organic binder

Methodology Applied

Scientific EffectBarrier effect:

Data Source

PatentUS20250188287A1Multi-layered coated metal substrates

Publication Date: 2025.06.12 PRC DESOTO INTERNATIONAL INC

AI summary

The present disclosure is directed towards a coated metal substrate comprising a first coating layer comprising zinc particles and a binder comprising a first organic film-forming binder or an inorganic binder, wherein the first coating layer comprises zinc particles in an amount of at least 75% by weight, based on the total weight of the first coating layer; a second coating layer on the first coating layer, the second coating layer comprising aluminum metal particles, an alkaline earth metal compound, and a second organic binder; and optionally, a third coating layer. Also disclosed are systems and methods for coating metal substrates.