REVIEW OF RF PATENTS FOR REFRACTORY INVENTIONS
Survey prepared by Zh. N. Demidova
Translated from Novye Ogneupory, No. 9, pp. 67, September 2009.
METHOD FOR IMPROVING THE SURFACE WEAR
RESISTANCE FOR CERAMIC OBJECTS
BASED ON ZIRCONIUM DIOXIDE
S. A. Gyngazov, A. P. Surzhikov, T. S. Frangul’yan,
I. M. Goncharenko, N. N. Koval’, V. N. Devyatkov,
and S. V. Grigor’ev
RU patent 2337894
MPK C04B 35/488, C04B 41/88
Method for improving the surface wear resistance of ob-
jects made from ceramic based on zirconium dioxide in-
cludes a mixture of ZrO
, billet molding and
sintering, irradiation after sintering of the object surface with
from 1 to 10 pulses of an electron beam with an electron en-
ergy of 15 to 30 keV. Pulse duration from 30 to 100 msec and
beam current density from 40 to 100 A/cm
. The method is
distinguished by the fact that before performing irradiation
with an electron beam the billet working surface is polished
and a film of aluminum is applied to it with thickness from 1
to 10 mm.
Inventions Bulletin: Utility Models,
No. 29, 556 (2008).
METHOD FOR PREPARING OBJECTS
MADE FROM NANOSTRUCTURED
B. L. Krasnyi, V. P. Tarasovskii, A. B. Krasnyi,
and A. S. En’ko
RU Patent 2341493
MPK C04B 35/101
Method for manufacturing objects made from
nanostructured ceramic includes preparation of a molding
mix containing electrocorundum of the fraction
0.01 – 3.5 mm, alumina, hydraulically solidifying addition
and hardening liquid, molding by vibration casting, semifin
ished product drying and firing at 1500 – 1550°C. The
method is distinguished by the fact that the molding mix con
tains fractionated electrocorundum with a fraction ratio of
0.5 – 3.0 and 0.01 – 0.5 mm, equal to 1:1, and additional
bimodally reactive alumina CL 370, hydraulically solidifying
addition in the form of alumina Alphabond-300, hardening
liquid in the form of silica sol KZ-TM with the following ra-
tio of components, wt.%: 60 – 66 electrocorundum, 29 – 33
alumina CL 370, 2 – 4 alumina Alphabond-300, 1 – 5 Silica
sol KZ-TM. After dry mixing the alumina CL 370 and
Alphabond-300, there is successive addition of fractions of
electrocorundum 0.1 – 0.5 and 0.5 – 3.0 mm to the mixture
obtained, the mixture is homogenized, moistened with silica
sol KZ-TM and constantly mixed. Then molding under the
action of vibration is carried out, applied periodically over
the horizontal and vertical axes of the mold. A billet obtained
is subjected to air hardening, drying and firing.
Bulletin, No. 35, 794 (2008).
COMPOSITE CERAMIC MATERIAL
A. G. Mel’nikov, S. N. Kul’kov, N. L. Savchenko,
and T. Yu. Sablina
RU Patent 2341494
MPK C04B 35/488, C04B 35/626
Composite ceramic material distinguished by the fact
that it contains as a matrix ultrafine ZrO
powder, and as a
strengthening material reinforcing particles prepared by a
plasma chemical method from ZrO
, and it has the
following ratio of matrix and strengthening, vol.%: 15 – 40
reinforcing particles, balance ZrO
powder. Here the rein
forcing particles contain 20 – 50% Al
, the size of the re
inforcing particles is 0.1 – 10 mm.
Bulletin, No. 35, 794 (2008).
Refractories and Industrial Ceramics Vol. 50, No. 5, 2009
1083-4877/09/5005-0394 © 2009 Springer Science+Business Media, Inc.
OOO Intermet Inzhiniring, Moscow, Russia.
Subsequently we use the abbreviated name Bulletin.