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Wednesday, May 17, 2006 - 10:00 AM
HTM063.4

Fabrication and Repair with High Temperature Materials by Laser Powder Deposition

J. W. Sears, South Dakota School of Mines & Technology, Rapid City, SD

Laser Powder Deposition (LPD) for component manufacture and repair offers some unique solutions for high temperature aerospace applications.  LPD is a CAD/CAM solid freeform fabrication technology that uses metal powder and laser fusion to repair components.  Inherent to LPD is the ability to add material for repair of critical gas turbine engine components with minimal heat affect to the under lying material.  Also, due to the nature of LPD, hard coatings can be achieved without heat treatment allowing producing durable hard surfaces on soft materials.  LPD also provides a mean to transition from low temperature material to high temperature refractory metals.  In some cases LPD can be used to replace hard chrome, nitrided or carburized surfaces. Details of several high temperature applications that have been produced will be disclosed.


Summary: Laser Powder Deposition (LPD) for component manufacture and repair offers some unique solutions for high temperature aerospace applications. Details of several high temperature applications that have been produced will be disclosed.