US 6,670,050 B2Granted

Titanium-based heat exchangers and methods of manufacture

AssigneeHoneywell International Inc.

InventorsDerek Raybould, Paul Chipko, Matthew J. Pohlman

Life of this patent

Estimating the term…

Abstract

Oxidation protection of a titanium heat exchanger is provided by a titanium aluminide or solgel coating. The coating protects bare titanium and brazed surfaces of the heat exchanger.

Claims13

Dependent claims

A heat exchanger comprising:

a core including titanium-based components that are bonded together by braze;
and
a protective coating on bare metal and braze surfaces of the core, the coating including a titanium aluminide conversion layer and an alumina top layer, the conversion layer having a thickness of at least 0.5 microns.

Dependencies are inferred from the claim text.

Facts

Application: 09/874,564Filed 5 Jun 2001 · continuation in part
Priority: 30 May 1997
Published: US 2001/0054500 A127 Dec 2001
Granted: 30 Dec 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

F28D 9/0062
Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact…
C23C 26/00
Coating not provided for in groups c23c2/00 - c23c24/00
F28F 19/06
By using coatings, e.g. vitreous or enamel coatings: of metal
F28F 21/084
Heat exchange elements made from metals or metal alloys: from aluminium or aluminium alloys

Family

Application08/865,905Parent of this continuation-in-part · filed 30 May 1997
US 2001/0054500 A1Pre-grant publication · published 27 Dec 2001
US 6,670,050 B2This patent

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

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