Production of improved boron abrasives

Details Production of improved boron abrasives Production of improved boron abrasives

1974-10-25

1976-08-24

Arnold, Donald J.

Abrasive tool making process, material, or composition

With inorganic material

51309R, B24D 304, B24D 306

Patent

active

039764443

ABSTRACT:
A boron abrasive is produced by crystallization of amorphous boron in the presence of and/or admixture with heavy metal borides. Boron filaments may be crystallized by being subjected to elevated temperatures, less than the melting point of boron, prior to shearing into short lengths and grinding into powder. Alternatively, boron in bulk form may be heated above the melting point and seeded with a material which will cause the formation of crystalline borides; the resulting product when cooled including solidified borides and crystalline boron which may be ground to powder.

REFERENCES:
patent: 2678870 (1954-05-01), Cooper
patent: 2735155 (1956-02-01), Glaser
patent: 3226248 (1965-12-01), Talley
patent: 3258316 (1966-06-01), Tepper et al.
patent: 3556834 (1971-01-01), Gebhardt
patent: 3573969 (1971-04-01), Camahort et al.
patent: 3574649 (1971-04-01), Fanti et al.
patent: 3619152 (1971-11-01), Yalof et al.

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