FABRICATION OF POROUS POWDER MATERIALS WITH CONTROLLED DIRECTION FILTERING

Abstract

The technology for obtaining of porous powder materials with frame structure on the basis of spherical particles of titanium powder, using application of technological coatings of Тi (Si+Мо), (Si+С) or (W+С) was developed. Formation of the powder with the coating was conducted in molding die under the pressure below the flow limit (under 200 MPa). Reaction sintering in a vacuum furnace was carried out at the temperature of 900 оС with the exposure within 1 hour, which allowed receiving penetration factor over 39·10–13 m2 with the formation of powder porous materials with isotropic structure and increased properties.

Keywords

• porous powder materials
• filtering elements
• spherical powders
• titanium micropowders
• magnetron sputtering
• combined cathodes
• nano-coatings
• glow-discharge plasma
• reaction sintering
• surface morphology
• penetration factor