Titanium Diboride Composite Coating for Wear Resistance

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Solution Overview

Problem

Existing metal alloys such as titanium, aluminum, and steel lack sufficient wear and corrosion resistance for dynamic machinery applications, with surface treatment methods like plasma spraying and plating often resulting in distortion and delamination.

Innovation Solution

A method involving heating a substrate and applying a precursor material containing titanium and boron to form a reinforced composite structure, where titanium diboride or monoboride is interjoined with the substrate, enhancing wear and corrosion resistance through sintering, alloying, and precipitation processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If surface treatment methods like plasma spraying or plating are used to add wear resistance layer, then wear resistance is improved, but substrate geometry distortion and layer delamination occur

Engineering Contradiction:

Improvewear resistanceVSAvoidsubstrate geometry

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The precursor material is combined with the substrate through interjoining to form a composite structure, merging the wear-resistant properties of the precursor material with the structural integrity of the substrate. This integration prevents delamination while maintaining geometry precision.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

A composite structure is formed by interjoining the precursor material with the substrate, creating a material system that combines the advantages of both components: the wear and corrosion resistance of the precursor material (titanium diboride/monoboride) with the mechanical properties of the substrate.

Inventive Principle:

Principle #40Composite materials

2Reliability

If surface treatment methods like plasma spraying or plating are used to add wear resistance layer, then wear resistance is improved, but the added layer delaminates from the substrate

Engineering Contradiction:

Improvewear resistanceVSAvoidlayer adhesion

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The precursor material is merged with the substrate through interjoining to form a composite structure, creating a stable bonded interface that prevents delamination while maintaining wear resistance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The composite structure formed by interjoining ensures stable composition and strong adhesion between the precursor material and substrate, eliminating the delamination issue associated with conventional surface treatments.

Inventive Principle:

Principle #40Composite materials

3Reliability

If the substrate is heated to form the reinforced material, then wear resistance and hardness are improved, but the bulk properties of the substrate may be altered

Engineering Contradiction:

Improvewear resistanceVSAvoidsubstrate bulk properties

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The heating process is applied locally to the surface region where the precursor material is disposed, forming the reinforced material only where needed. This localized treatment improves wear resistance while preserving the bulk properties of the substrate.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The substrate is divided into two distinct regions: a surface region containing the interjoined precursor material with enhanced wear resistance, and a bulk region that retains its original properties. This segmentation allows independent optimization of surface and bulk characteristics.

Inventive Principle:

Principle #1Segmentation

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 method creates a composite structure with improved hardness, high-temperature strength, and wear resistance without altering the substrate's bulk properties, providing a durable and adherent surface coating.

Implementation Method 1

heating at least a surface portion of a substrate to a temperature above the melting point of the substrate

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 2

forming a reinforced material with the precursor material interjoined with the surface portion of the substrate to provide the composite structure

Methodology Applied

Scientific EffectSintering: Sintering

Implementation Method 3

enhancing wear and corrosion resistance through sintering, alloying, and precipitation processes

Methodology Applied

Scientific EffectAlloying:

Implementation Method 4

enhancing wear and corrosion resistance through sintering, alloying, and precipitation processes

Methodology Applied

Scientific EffectPrecipitation: Precipitation

Data Source

PatentUS10828865B1Toughened and corrosion- and wear-resistant composite structures and fabrication methods thereof

Publication Date: 2020.11.10 CONSOLIDATED NUCLEAR SECURITY LLC

AI summary

Composite structures having a reinforced material intermingled with a substrate wherein the reinforced material includes titanium monoboride, titanium diboride, or a combination thereof.