公开(公告)号：CA2785322A1

公开(公告)日：2011-07-14

申请号：CA2785322

申请日：2010-12-16

Applicant: GEN ELECTRIC

Inventor： HAZEL BRIAN THOMAS ,  LIPKIN DON MARK ,  RUCKER MICHAEL HOWARD ,  VIGUIE RUDOLFO

IPC: C23C10/02 ,  C23C10/48 ,  C23C10/52 ,  C23C14/16 ,  C23C14/32 ,  C23C14/58 ,  C23C28/00

Abstract: A nickel aluminide based coating system for a metallic substrate comprises a coating precursor (22), including at least one layer (24a) of nickel and at least one alloy element overlying the metallic substrate (20) obtained from a first source and at least one aluminum layer (26) overlying the metallic substrate (20) obtained from a second source and, optionally, a ceramic thermal barrier coating overlying a coating formed after suitable processing of the coating precursor. A method for forming a nickel aluminide based coating includes providing a source for providing a significant portion of the aluminum content for a coating precursor and a separate nickel alloy source for providing substantially all the nickel and additional alloying elements for the coating precursor. Cathodic arc (ion plasma) deposition techniques may be utilized. The coating precursor may be provided in discrete layers, or from a co-deposition process.

公开(公告)号：CA2721780A1

公开(公告)日：2011-05-30

申请号：CA2721780

申请日：2010-11-18

Applicant: GEN ELECTRIC

Inventor： PALANISAMY BARATH ,  DASAN BIJU ,  AJDELSZTAJN LEONARDO ,  MILLER JOSHUA LEIGH ,  SAMPATH SRINIDHI ,  LIPKIN DON MARK

IPC: C22B61/00

Abstract: A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the oxidation feedstock to convert rhenium into a volatile rhenium oxide. The flaky morphology of the oxidation feedstock is achieved by increasing the surface area of the superalloy scrap.

公开(公告)号：BR0004898A

公开(公告)日：2001-05-29

申请号：BR0004898

申请日：2000-10-18

Applicant: GEN ELECTRIC

Inventor： WEI BIN ,  LIPKIN DON MARK ,  MACDONALD LEO SPITZ

IPC: C23C16/00 ,  C25F5/00 ,  C25F7/00

Abstract: An electrochemical stripping process is described that strips at least one metallic coating from a substrate. Due to the electrochemical selectivity of the disclosed process, the parent alloy is minimally affected by the electrochemical stripping process. The process comprises providing an electrolyte (3); disposing the coated articles (6) and at least one electrode (4, 5) in the electrolyte; applying a current between the electrode and the coated articles, and removing the at least one coating from the coated articles without modifying the parent alloy. The system for the electrochemical stripping process comprises an electrolyte (3); a direct current source (10); and plurality of electrodes (4, 5) from which a direct current may be directed to the article being stripped. The direct current source is capable of being connected to the coated articles and the plurality of electrodes. The system permits removal of the at least one coating from the parent alloy.