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Proceedings Paper

Microstructure And Oxidation Properties Of Laser Clad Ni70AL20Cr7Hf3 Alloys With Extended Solid Solution Of Hf
Author(s): J. Mazumder; S. Sircar; C. Ribaudo; A, Kar
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Paper Abstract

Alloys coatings for superalloys for improved higher temperature (1200°C) service life under aggressive atmospheres are of great interest at present. There is a general consensus that addition of rare earths such as hafnium (Hf) to these alloys has a pronounced effect on the oxidation resistance properties at high temperatures. In situ laser cladding technique was used to produce Ni-Al-Cr-Hf alloys with extended solid solution of Hf in a near stoichiometric Ni3Al matrix. A 10 kW CW CO2 laser was used in conjunction with a screw-feed powder dispenser to perform the in situ cladding process.

Paper Details

Date Published: 16 January 1988
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Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); doi: 10.1117/12.968899
Show Author Affiliations
J. Mazumder, University of Illinois at Urbana-Champaign (United States)
S. Sircar, University of Illinois at Urbana-Champaign (United States)
C. Ribaudo, University of Illinois at Urbana-Champaign (United States)
A, Kar, University of Illinois at Urbana-Champaign (United States)


Published in SPIE Proceedings Vol. 0952:
Laser Technologies in Industry

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