Title:
METHOD FOR PRODUCING ZIRCONIA-REINFORCED ALUMINA GRAINS AND GRAINS, IN PARTICULAR ABRASIVE GRAINS, PRODUCED BY SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2012/045302
Kind Code:
A3
Abstract:
The invention relates to a method for producing zirconia-reinforced Al2O3 grains (9, 12), comprising at least the following steps: inductively melting a starting mixture (2) to form a eutectic melt made of alumina and zirconia (102); applying the eutectic melt (4) as a thin layer material (6, 12), the thin layer material (6, 12) being quenched (104, 107); removing the thin layer material (12); wherein here abrasive grains (12) can be formed directly (107) or the thin layer material (6) can be classified when it is broken into abrasive grains (9) (105, 106), wherein the grains (9, 12) are polycrystalline without amorphous glass phases as an alumina matrix having zirconia precipitations (22, 22a) and wherein at least some of the zirconia precipitations (22a) formed in the nanoscale range.
Inventors:
FISCHER GERD (DE)
MEGERLE CLEMENS (DE)
FALZ WOLFGANG (DE)
MEGERLE CLEMENS (DE)
FALZ WOLFGANG (DE)
Application Number:
PCT/DE2011/001804
Publication Date:
July 05, 2012
Filing Date:
October 06, 2011
Export Citation:
Assignee:
VER SCHMIRGEL & MASCHF (DE)
FISCHER GERD (DE)
MEGERLE CLEMENS (DE)
FALZ WOLFGANG (DE)
FISCHER GERD (DE)
MEGERLE CLEMENS (DE)
FALZ WOLFGANG (DE)
International Classes:
C04B35/653; B24D3/00; C04B35/109; C04B35/111; C09K3/14
Domestic Patent References:
| WO2003011782A2 | 2003-02-13 | |||
| WO2003011776A1 | 2003-02-13 |
Foreign References:
| US20040148967A1 | 2004-08-05 | |||
| US20050065013A1 | 2005-03-24 |
Attorney, Agent or Firm:
BREMER, Ulrich, H. et al. (Theaterstrasse 6, Hannover, DE)
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