The results of the influence of some oxides on the sintering and properties of ZnO ceramics are presented. The introduction of additives from solutions of the corresponding salts has a better effect on the formation of the ceramic microstructure. In this case, ceramics are actively sintered according to the liquid-phase mechanism in the presence of glass-forming Bi 2 O 3 and Sb 2 O 3 and Ni oxides , Mn, Sn, etc. Il. 3, bibliography: 5 titles.
The structures of materials with various matrices based on silicates with additions of wollastonite as a filler are considered. The dependences of strength and other properties on the amount of introduced wollastonite and its characteristics are analyzed. Tab. 2, ill. 5, bibliography: 6 titles.
When the detonation products of C 4 H 4 N 8 O 14 interact with copper, tenorite and a previously unknown modification of cuprite with face-centered cubic lattice with a = 12.078 E. X-ray diffraction data of the detected copper oxides are presented. Tab. 2, ill. 2, bibliography: 11 titles.
Prospects for the use of synergistic and quasi-chemical approaches for various stages of ceramic technology - powder production, billet molding, sintering are considered. Il. 2, bibliography: 19 titles.
The current state of the production of porous ceramic materials, mainly for high-temperature applications in various fields of technology, is considered. A classification of these materials is proposed and the most frequently used methods of increasing the porosity of ceramic materials are described in detail. The relationship between the methods of manufacturing porous ceramics and its structure, properties and application is shown. Tab. 2, bibliography: 10 titles.
The results of the development of strong and extra-strong ceramics made of aluminum oxide and partially stabilized zirconium dioxide, based on the use of highly dispersed powders, methods of hydrostatic and hot pressing, as well as sintering in a gasostat are presented. Ceramic materials based on aluminum oxide with a strength of 300 - 750 MPa, and on the basis of partially stabilized zirconium dioxide - 800 - 2500 MPa were obtained. These materials can be widely used in various fields of technology due to their high strength, wear resistance and hardness. Bibliography: 9 titles.
On examples of samples of various shapes, the influence of the method of forming a ceramic semifinished product on its homogeneity is considered. The dependence of the degree of inhomogeneity of the semifinished product on the geometric characteristics of the sample and the conditions for its formation has been established. Tab. 2, ill. 1, bibliography: 8 titles.
Ceramic materials have been developed with a sintering temperature of 1475 - 1520 ° C, an average density of 3.55 - 3.75 g / cm 3 , a closed porosity of about 3% and an average tensile strength in three-point bending of 250 - 350 MPa, promising for use as grinding bodies. Pilot tests have shown that the developed ceramics are 10 to 15 times more durable when grinding ceramic paint than uralite grinding media. Tab. 1, bibliography: 2 titles.
A high-performance technology has been developed for the design of miniature ceramic products by the method of static pressing using automatic press machines. Manufactured products are characterized by high dimensional accuracy and good physical, mechanical and dielectric properties. Il. 2, bibliography: 3 titles.
A block diagram of an installation for electrode heating of a plastic ceramic mass in the process of forming workpieces by extrusion is considered. The predominant areas of using such heating in the production of technical and household items are indicated. Il. 1, bibliography: 3 titles.
