发明名称 |
METHOD OF PRODUCING HIGH-DENSITY GRAPHITE |
摘要 |
FIELD: chemistry.SUBSTANCE: invention can be used in making high-heat areas of structures subjected to aggressive oxidative media. A graphite workpiece is subjected to vacuum embedding with high-temperature coal-tar pitch at temperature higher than the melting point of the pitch. Simultaneous saturation and carbonisation is then carried out at pressure of (80-105) MPa at temperature (700-750)°C, while maintaining said pressure and temperature for at least 4 hours and high-temperature vacuum treatment is carried out while maintaining temperature of (2100-2300)°C for at least half an hour.EFFECT: high density and strength of the obtained material while still enabling the manufacture of large components from said material.5 tbl |
申请公布号 |
RU2496714(C1) |
申请公布日期 |
2013.10.27 |
申请号 |
RU20120115919 |
申请日期 |
2012.04.20 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "NAUCHNO-ISSLEDOVATEL'SKIJ INSTITUT KONSTRUKTSIONNYKH MATERIALOV NA OSNOVE GRAFITA "NIIGRAFIT" |
发明人 |
KOLESNIKOV SERGEJ ANATOL'EVICH;MELAMED ANNA LEONIDOVNA;OSTRONOV BORIS GRIGOR'EVICH;PETROV ANATOLIJ MIKHAJLOVICH |
分类号 |
C01B31/04;C04B35/532 |
主分类号 |
C01B31/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|