FIELD: chemistry.
SUBSTANCE: invention relates to ceramic material science, particularly to production of ceramic material based on heat-resistant non-oxygen and oxide compounds, characterised by high strength and crack-resistance, and can be used to make a cutting tool, in oil and gas industry (valve devices and sealing rings of pumps), in making nozzle extensions for air-sand blowers and chemical solution sprayers. The ceramic material is obtained from a mixture which contains components in the following ratio, wt %: Al2O3 10-40, ZrN 20-65, ZrO2 - the balance, at sintering temperature 1700-1800°C and nitrogen pressure during sintering of 0.10-0.12 MPa without a complex operation for isostatic moulding using high pressure.
EFFECT: obtaining ceramic material with high crack-resistance (coefficient of intensity of critical stress 7-14 MPa·m1/2 s) and bending strength 650-750 MPa.
1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITE CERAMIC MATERIAL FOR HIGH-TEMPERATURE APPLICATION (VERSIONS) | 2007 |
|
RU2336245C1 |
| PROCESS OF RECEIVING COMPOSITION CERAMIC POWDER ON THE BASIS OF SILICON NITRIDE AND ZIRCONIUM OXIDE AND CHARGE FOR ITS IMPLEMENTATION | 2007 |
|
RU2351435C1 |
| CERAMIC MATERIAL AND PREPARATION METHOD THEREOF | 2008 |
|
RU2402507C2 |
| METHOD OF MAKING SILICON NITRIDE CERAMIC WITH CALCIUM ALUMINATE SINTERING ADDITIVE WITH LOW MELTING | 2019 |
|
RU2734682C1 |
| METHOD OF OBTAINING TECHNOLOGICAL TRAININGS OF CERAMIC ARTICLES FROM SILICON NITRIDE | 2016 |
|
RU2641358C2 |
| COMPOSITE CERAMIC MATERIAL IN SiC-AlO SYSTEM FOR HIGH-TEMPERATURE USE IN OXIDATIVE MEDIA | 2012 |
|
RU2498957C1 |
| METHOD FOR PRODUCTION OF METAL CERAMICS OF ZIRCONIUM DIOXIDE | 1996 |
|
RU2088550C1 |
| SIALON-CONTAINING MATERIAL AND COMPOSITION FOR ITS PREPARATION | 2007 |
|
RU2359944C1 |
| ZIRCON BASED MIXTURE FOR MAKING COMPACT REFRACTORY CERAMICS | 2009 |
|
RU2394004C1 |
| METHOD OF PRODUCING HOT-PRESSED SILICON CARBIDE CERAMICS | 2023 |
|
RU2816616C1 |
