METHOD OF APPLYING OXIDATION-RESISTANT AND ULTRA-HIGH-TEMPERATURE TITANIUM, ZIRCONIUM AND HAFNIUM DIBORIDE COATINGS TO COMPOSITE MATERIALS Russian patent published in 2018 - IPC C04B41/87 C04B35/58 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the technology of producing ultra-high-temperature and oxidation-resistant carbon-carbon fibrous composite materials used in the construction of aircraft parts, operated under extreme conditions. Proposed is a method for applying titanium, zirconium and hafnium diboride coatings to porous structures by the gas-phase method (CVD), comprising the reaction of the thermal chemical gas-phase decomposition of borohydrides of corresponding metals on the surface of blanks of porous materials heated to 250 °C. Original substances are solutions of titanium, zirconium and hafnium borohydrides in organic hydrocarbons of limits C₇-C₁₀ with boiling point (T_boil.) 90–190 °C, and the process is conducted by passing volatile vapors of titanium, zirconium and hafnium borohydrides and organic hydrocarbons together for 10–24 hours to a weight gain of at least 20 wt.%.

EFFECT: simplified technology for producing ultra-high-temperature materials.

1 cl, 3 dwg, 3 ex