Laser barrier material

Details Laser barrier material Laser barrier material

1991-07-30

1992-08-18

Albritton, C. L.

Electric heating

Metal heating

By arc

2191217, 252582, B23K 2600

Patent

active

051401274

ABSTRACT:
In the laser drilling of a hole through a wall of a gas turbine blade into a cavity within the blade there is provided an injectable PTFE substitute for injection into the cavity before laser drilling. The PTFE substitute prevents strike-through of laser light to the opposite wall of the cavity. The PTFE substitute used is fluorinated ethylene propylene or a copolymer having a PTFE backbone and fully fluorinated alkoxy side groups.

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patent: 5011626 (1991-04-01), Ma et al.
patent: 5049722 (1991-09-01), Corfe et al.
Encyclopedia of Polymer Science and Technology (Plastics Resins Rubber Fibre) Ed. by Mark, etc.; vol. 7, p. 197.

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