| 摘要 |
FIELD: technological processes. ^ SUBSTANCE: invention relates to the field of powder metallurgy and may be used to produce highly solid and wear-resistant materials, for instance, for elements of armoured protection or individual protection against small arms and fragments of ammunition. The composite ceramic material represents a multilayer material at least of two main layers made of a mixture of powders of boron carbide and eutectic of titanium diboride and titanium carbide, between which there is a layer of nanosize powder of eutectic of titanium diboride and titanium carbide with particle size of 5-160 nm. The method to make a composite ceramic material consists in mixing of a mixture of powders of boron carbide and eutectic of titanium diboride and titanium carbide with organic binder, forming sheet stocks, laying sheet stocks in a die mould. At least two sheet stocks are laid into a die mould, and between them a stock of nanosize powder of eutectic of titanium diboride and titanium carbide is placed. The thickness of the layer makes 0.03-0.15 of the main layer thickness. Their joint hot pressing is carried out at 1800-2100C and pressure of 200-300 kgf/cm2 for 20-50 minutes. ^ EFFECT: when using the proposed material as armoured protection, weight and dimension characteristics are reduced, and the class of protection is preserved. ^ 5 cl, 1 tbl, 10 dwg |
