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Patent Searching and Data


Title:
LASER BEAM ABSORBENT FOR TREATING SURFACE OF LASER
Document Type and Number:
Japanese Patent JPS6223986
Kind Code:
A
Abstract:

PURPOSE: To obtain the titled absorbent wherein the scattering and the peeling of a coated film in a period of laser irradiation and both precipitation and flocculation of the absorbent in a soln. are not caused by blending the dispersant and a thickening agent in the laser beam absorbent blended with metallic oxide or the like in a dispersion medium.

CONSTITUTION: A laser beam absorbent is obtained by blending the powder for beam absorption consisting of a metallic compd. of one or more kinds of metallic oxide, metallic carbide and metallic nitride, a dispersant and/or a thickening agent in a dispersion medium. Since the powdery grains for beam absorption exist almost individually in this absorbent and each powdery grain is made to a state covered with the soln., the adhesion is remarkably increased after the drying. This effect remains even when it is exposed at high temp. with the laser irradiation. Also since the powdery grains exist individually even when a binder is decomposed, it is melted extremely easily with the laser irradiation and it is considered that this melted phase is penetrated among the nonmelted powdery grains and the adhesion is increased.


Inventors:
ASHIDA YOSHIO
SEKI YUICHI
MASUDA YOSHIO
Application Number:
JP1985000164510
Publication Date:
January 31, 1987
Filing Date:
July 24, 1985
Export Citation:
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Assignee:
KOBE STEEL LTD
International Classes:
C23F4/00; C21D1/09; (IPC1-7): C23F4/00