METHOD FOR DEPOSITING OF COATING ONTO SLIDING SURFACE OF FIRE-RESISTANT MEMBER, FIRE-RESISTANT MEMBER, AND ELECTRODE FOR ELECTRIC DISCHARGE TREATMENT OF SURFACE Russian patent published in 2008 - IPC C23C26/00 B23H9/00 B23H1/04 F02C7/00 

FIELD: process for deposition of coating on sliding surface of fire-resistant member, may be used in manufacture and repair of gas turbine vanes.

SUBSTANCE: method involves using electrode from green compact of material having lubricating properties at elevated temperature, or mixture of fire-resistant solid material and material having lubricating properties at elevated temperature; depositing coating by generating pulsed electric discharge between electrode and sliding surface; forming coating layer from electrode material or product of reaction of electrode material with sliding surface using electric discharge energy. Fire-resistant material is any of CBN, TiC, TiN, TiAlN, TiB₂, WC, Cr₂C₂, SiC, ZrC, VC, B₄C, Si₃N₄, ZrO₂, and Al₂O₃, or mixture thereof. Material having lubricating properties at elevated temperature contains chromium and/or chromium oxide (Cr₂O₃) and/or hexaboric nitride (hBN).

EFFECT: increased wear resistance and improved lubricating properties of coating layer at elevated temperature.

44 cl, 19 dwg, 7 tbl