Abrasive grain and method for manufacturing the same

Details Abrasive grain and method for manufacturing the same Abrasive grain and method for manufacturing the same

1992-03-06

1993-03-09

Bell, Mark L.

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51293, 501153, B24D 300

Patent

active

051923394

ABSTRACT:
An abrasive grain for use as a grinding material characterized by alpha-corundum crystal particles substantially smaller than 0.5 micron, solidly dissolved with at least one element out of Ti, Mn, V, Ga, Zn and Rh, and with an a-axis length of the hexagonal unit cell of the alpha-Al.sub.2 O.sub.3 at 4.75892 to 4.76340 angstrom when measured by a powder X-ray diffraction method, and a density of more than 90% of the theoretical value, and an abrasive grain for a grinding material, characterized by alpha-corundum crystal particles substantially less than 0.5 micron, solidly dissolved with at least one element out of Mg, Ni and Co, and with an a-axis length of the hexagonal unit cell of the alpha-Al.sub.2 O.sub.3 at 4.75930 to 4.76340 A when measured by a powder X-ray diffraction method, and a density of more than 90% of the theoretical value, and further, a grindstone and grinding cloth manufactured that these abrasive grains.

REFERENCES:
patent: 4314827 (1982-02-01), Leitheiser et al.
patent: 4518397 (1985-05-01), Leitheiser et al.
patent: 4623364 (1986-11-01), Cottringer et al.
patent: 4744802 (1988-11-01), Schwabel
patent: 4786292 (1988-11-01), Janz et al.
patent: 4799938 (1989-01-01), Janz et al.

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