skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process

Abstract

In the method for fabrication of water-cooled composite nozzle and bucket hardware for high temperature gas turbines, a high thermal conductivity copper alloy is applied, employing a high velocity/low pressure (HV/LP) plasma arc spraying process, to an assembly comprising a structural framework of copper alloy or a nickel-based super alloy, or combination of the two, and overlying cooling tubes. The copper alloy is plamsa sprayed to a coating thickness sufficient to completely cover the cooling tubes, and to allow for machining back of the copper alloy to create a smooth surface having a thickness of from 0.010 inch (0.254 mm) to 0.150 inch (3.18 mm) or more. The layer of copper applied by the plasma spraying has no continuous porosity, and advantageously may readily be employed to sustain a pressure differential during hot isostatic pressing (HIP) bonding of the overall structure to enhance bonding by solid state diffusion between the component parts of the structure.

Inventors:
 [1];  [2];  [3];  [4]
  1. (4 Hempshire Ct., Scotia, NY 12302)
  2. (R.D. #3, Western Ave., Amsterdam, NY 12010)
  3. (301 Garnsey Rd., Rexford, NY 12148)
  4. (6 Coronet Ct., Schenectady, NY 12309)
Publication Date:
Research Org.:
General Electric Co
OSTI Identifier:
864476
Patent Number(s):
US 4370789
Assignee:
Schilke; Peter W. (4 Hempshire Ct., Scotia, NY 12302); Muth; Myron C. (R.D. #3, Western Ave., Amsterdam, NY 12010); Schilling; William F. (301 Garnsey Rd., Rexford, NY 12148); Rairden, III; John R. (6 Coronet Ct., Schenectady, NY 12309) OSTI
DOE Contract Number:  
EX-76-C-01-1806
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fabrication; gas; turbine; water-cooled; composite; nozzle; bucket; hardware; employing; plasma; spray; process; method; temperature; turbines; thermal; conductivity; copper; alloy; applied; velocity; pressure; hv; lp; spraying; assembly; comprising; structural; framework; nickel-based; super; combination; overlying; cooling; tubes; plamsa; sprayed; coating; thickness; sufficient; completely; cover; allow; machining; create; smooth; surface; 010; inch; 254; 150; 18; layer; continuous; porosity; advantageously; readily; employed; sustain; differential; hot; isostatic; pressing; hip; bonding; overall; structure; enhance; solid; diffusion; component; thickness sufficient; temperature gas; plasma spray; smooth surface; thermal conductivity; gas turbine; pressure differential; plasma spraying; hot isostatic; assembly comprising; isostatic pressing; copper alloy; gas turbines; cooling tubes; composite nozzle; spray process; cooling tube; coating thickness; completely cover; structural framework; water-cooled composite; super alloy; structural frame; bucket hardware; /29/416/427/

Citation Formats

Schilke, Peter W., Muth, Myron C., Schilling, William F., and Rairden, III, John R. Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process. United States: N. p., 1983. Web.
Schilke, Peter W., Muth, Myron C., Schilling, William F., & Rairden, III, John R. Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process. United States.
Schilke, Peter W., Muth, Myron C., Schilling, William F., and Rairden, III, John R. Sat . "Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process". United States. https://www.osti.gov/servlets/purl/864476.
@article{osti_864476,
title = {Fabrication of gas turbine water-cooled composite nozzle and bucket hardware employing plasma spray process},
author = {Schilke, Peter W. and Muth, Myron C. and Schilling, William F. and Rairden, III, John R.},
abstractNote = {In the method for fabrication of water-cooled composite nozzle and bucket hardware for high temperature gas turbines, a high thermal conductivity copper alloy is applied, employing a high velocity/low pressure (HV/LP) plasma arc spraying process, to an assembly comprising a structural framework of copper alloy or a nickel-based super alloy, or combination of the two, and overlying cooling tubes. The copper alloy is plamsa sprayed to a coating thickness sufficient to completely cover the cooling tubes, and to allow for machining back of the copper alloy to create a smooth surface having a thickness of from 0.010 inch (0.254 mm) to 0.150 inch (3.18 mm) or more. The layer of copper applied by the plasma spraying has no continuous porosity, and advantageously may readily be employed to sustain a pressure differential during hot isostatic pressing (HIP) bonding of the overall structure to enhance bonding by solid state diffusion between the component parts of the structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}

Patent:

Save / Share: