Method for increasing the surface area of ceramics, metals and c

Details Method for increasing the surface area of ceramics, metals and c Method for increasing the surface area of ceramics, metals and c

1993-07-13

1995-12-05

Hoang, Tu

Electric heating

Metal heating

By arc

21912166, 21912168, B23K 2600

Patent

active

054731380

ABSTRACT:
A method for increasing the surface area and roughness of metals, ceramics and composites on a micro-scale, and the surfaces themselves, is disclosed whereby a laser beam having a radiation wavelength of from UV to infrared is pulsed onto the surface of the material. The energy density of the radiation is between 0.01 to 15 J/cm.sup.2 and at least 50 pulses of radiation having duration of from 1 picosecond to 1 millisecond are used on each area. The surface structures formed are semi-periodic and are from 1/4 to several hundred microns in magnitude.

REFERENCES:
patent: 4912298 (1990-03-01), Daniels et al.
patent: 4972061 (1990-11-01), Duley et al.
patent: 5175043 (1992-12-01), Yabe et al.
patent: 5246530 (1993-09-01), Bugle et al.

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