Thomas A Kircher

US Patent:

6444054, Sep 3, 2002

Filed:

Jun 21, 2000

Appl. No.:

09/598615

Inventors:

Thomas Kircher - Douglassville PA
Bruce G. McMordie - Perkasie PA
Srinivasan Shankar - Branford CT

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

C23C 2200

US Classification:

148248, 148264, 148283, 427229

Abstract:

Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a CrâAl alloy containing about 50 wt % to about 80 wt % Cr in the alloy, LiF in an amount greater than or equal to 0. 3 wt % of the CrâAl alloy, an organic binder, and a solvent.

US Patent:

6730179, May 4, 2004

Filed:

Aug 31, 2001

Appl. No.:

09/944338

Inventors:

Thomas Kircher - Biddeford ME

Assignee:

Sermatech International Inc. - Limerick PA

International Classification:

C23C 2200

US Classification:

148240, 148280, 148283, 427229, 427237, 427253

Abstract:

Method for localized aluminide coating applied for the first time or as repair includes creating a contained space by disposing coating material comprising an aluminum source and a halide activator at least partially over and in an out-of-contact relation with a target surface of a metal substrate. Heating the substrate to a temperature to cause the aluminum source to react with the halide activator and the substrate results in diffusion aluminide coating of the targeted surface. An article comprising a target surface of a metal substrate, said surface bounding a contained space, and a coating tape comprising an aluminum source and a halide activator and disposed in an out-of-contact relation at least partially over the contained space whereby, when the substrate is heated to a temperature to cause the halide activator to react with the aluminum source, a diffusion aluminide coating is formed on the target surface.

US Patent:

20130040166, Feb 14, 2013

Filed:

May 26, 2009

Appl. No.:

13/322186

Inventors:

Paul Box - Washingborough, GB
Hugh Evans - Ashleworth, GB
Thomas Kircher - Biddeford ME, US
Thomas Lewis - Chester Springs PA, US
Bruce McMordie - Perkasie CT, US
John Nicholls - Milton Keynes, GB
Paul Padley - Tattershall, GB
Nigel Simms - Milton Keynes, GB
Jonathan Venezia - Pottstown PA, US
Paul Mathew Walker - Dunholme, GB
Adrian Weatherill - Grantham, GB
Mick Whitehurst - Hayle, GB

International Classification:

B32B 15/00
B05D 3/02
B05D 1/36

US Classification:

428680, 427404, 4273831

Abstract:

A layer system and a method for producing a component having such a layer system are provided. The layer system includes a substrate a substrate, at least one MCrX layer on the substrate, and a chromium-rich layer on or in the at least one MCrX layer. X includes at least one element selected from the group consisting of yttrium (Y), silicon (Si), aluminum (Al) and boron (B). M includes at least one element selected from the group consisting of nickel (Ni) and cobalt (Co).

US Patent:

59224096, Jul 13, 1999

Filed:

Feb 19, 1997

Appl. No.:

8/802661

Inventors:

Bruce G. McMordie - Perkasie PA
Thomas A. Kircher - Abington PA

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

B05D 302

US Classification:

4273837

Abstract:

The oxidation and corrosion resistance of a nickel-base alloy are enhanced by a process which includes first enriching the surface of an alloy substrate with platinum, as by electrolytic deposition, and then simultaneously diffusing aluminum and silicon from a molten state into the platinum-enriched substrate. The invention further provides coatings and coated substrates with enhanced oxidation and corrosion resistance.

US Patent:

61102628, Aug 29, 2000

Filed:

Aug 31, 1998

Appl. No.:

9/143962

Inventors:

Thomas Kircher - Douglassville PA
Bruce G. McMordie - Perkasie PA
Srinivasan Shankar - Branford CT

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

C23C 1026

US Classification:

106 1444

Abstract:

Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a Cr--Al alloy containing about 50 wt % to about 80 wt % Cr in the alloy, LiF in an amount greater than or equal to 0. 3 wt % of the Cr--Al alloy, an organic binder, and a solvent.

US Patent:

56502354, Jul 22, 1997

Filed:

Feb 28, 1994

Appl. No.:

8/202352

Inventors:

Bruce G. McMordie - Perkasie PA
Thomas A. Kircher - Abington PA

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

B32B 1504

US Classification:

428610

Abstract:

The oxidation and corrosion resistance of a nickel-base alloy are enhanced by a process which includes first enriching the surface of an alloy substrate with platinum, as by electrolytic deposition, and then simultaneously diffusing aluminum and silicon from a molten state into the platinum-enriched substrate. The invention further provides coatings and coated substrates with enhanced oxidation and corrosion resistance.

US Patent:

60369957, Mar 14, 2000

Filed:

Jan 31, 1997

Appl. No.:

8/797691

Inventors:

Thomas A. Kircher - Douglassville PA
Bruce G. McMordie - Perkasie PA
Mark F. Mosser - Perkiomenville PA

Assignee:

Sermatech International, Inc. - Limerick PA

International Classification:

B05D 132
B05D 302

US Classification:

427142

Abstract:

A method for removing surface layers of a metal coating is disclosed. The method comprises applying an aluminum containing slurry to the surface of the metal coating, melting and diffusing the aluminum to form an aluminide layer within the surface of the metal coating, and removing the aluminide layer.