Process for controlling powder size with optical energy

Details Process for controlling powder size with optical energy Process for controlling powder size with optical energy

1979-12-12

1981-09-15

Lewis, Michael L.

Electric heating

Metal heating

By arc

501154, 501 97, 501 1, 75 08B, 148126, 219121LH, 219121LU, 219121LM, 219121LN, 219121LU, 423324, 423344, 250432R, B23K 900

Patent

active

042899524

ABSTRACT:
Metal or ceramic powders having a narrow size distribution are produced by passing a gas entrained powder through an intense light beam which couples preferentially with the larger particles to heat and selectively vaporize a portion of the larger particles until their diameter approximates the desired size.

REFERENCES:
patent: 3290723 (1966-12-01), Jaques et al.
patent: 3539221 (1970-11-01), Gladstone et al.
patent: 4005956 (1977-02-01), Inoue
patent: 4200669 (1980-04-01), Schaefer et al.

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