US 2017/0283973 A1Published application

Metallurgically bonded wear resistant texture coatings for aluminum alloys and metal matrix composite electrode for producing same

AssigneeAl-Armor

InventorsBruce M. Warnes, Joseph A. Downie, Andrew C. Towns, Roger W. Kaufold

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Abstract

A coating process using a welding electrode comprises the steps of: electro-spark depositing a composite on to a substrate, wherein the composite consists essentially of alumina particles in a matrix, wherein the matrix is a metal selected from the group consisting of aluminum or an aluminum alloy. The substrate herein is an aluminum alloy. The coatings involve only aluminum and aluminum compounds, thereby intermetallic compound formation and galvanic corrosion of the coating-substrate materials system is avoided.

Claims3

Dependent claims

A coating process, comprising the steps of:

using an aluminum-aluminum oxide metal matrix composite electrode as a composite, electro-spark depositing said composite on to an aluminum alloy substrate to form a protective coating, wherein said protective coating consists of alumina particles in a matrix, wherein said matrix is a metal selected from the group consisting of aluminum and an aluminum alloy;
and,
wherein said protective coating is metallurgically bonded as a continuous layer to an entire surface of said aluminum alloy substrate by electro-spark deposition, and wherein said composite material is formed without intermetallic compound formation between said protective coating and said aluminum alloy substrate.

Dependencies are inferred from the claim text.

Facts

Application: 15/591,367Filed 10 May 2017
Priority: 27 Jul 2015
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

C25D 11/04
Anodisation: of aluminium or alloys based thereon
B23K 9/04
Arc welding or cutting: welding for other purposes than joining, e.g. built-up welding
B23K 35/286
With the principal constituent melting at less than 950°C: al as the principal constituent
C25D 11/16
Of aluminium or alloys based thereon: pretreatment , e.g. desmutting

Family

Application62/197,281Us provisional application · filed 27 Jul 2015
Application15/187,921Division · filed 21 Jun 2016
Application15/591,367Division
US 2017/0028498 A1Published application
US 9,757,812 B2Related patent
US 2017/0283973 A1This patent

From the US filing history. Foreign family members aren’t listed.

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