FIELD: chemistry.
SUBSTANCE: invention relates to obtaining coatings by method of chemical sedimentation from gas phase, namely to obtaining protective coatings from chromium and its alloys. Method of application of chromium-based wearproof metal coating includes supply of steam-gas mixture, which contains bis-arene compound of chromium and volatile compound of tin to the surface of heated product in vacuum, as volatile compound of tin applied is 0.1-1.0% tin tetrachloride, and process is carried out at temperature of heated product from 350 to 400 °C. Wearproof chromium-based metal coating contains modifying tin additive, has multi-layer structure from sequentially placed layers based on chromium with modifying tin additive, enriched and depleted of carbon. In depleted of carbon layers content of carbon is 0.5-5.0%, and in enriched with carbon layers - 6.0-12.0%.
EFFECT: increased wear stability of coatings is ensured, which makes it possible to improve tribological characteristics of engine details.
3 cl, 3 dwg, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DEPOSITING PYROLYTIC CHROMIUM CARBIDE COATINGS ON CAST-IRON PART SURFACES | 2000 |
|
RU2188877C2 |
| 0 |
|
SU1784656A1 | |
| METHOD OF APPLICATION OF PROTECTIVE COAT ON EXTERNAL SURFACES OF LONG-CUT METAL ARTICLES | 1999 |
|
RU2169793C1 |
| STEAM-GASEOUS MIXTURE FOR PYROLYTIC APPLICATION OF PROTECTIVE COATINGS MADE OF ON THE CHROME-BASE | 1987 |
|
SU1453950A1 |
| PRINTED-CIRCUIT BOARD MANUFACTURING PROCESS | 2002 |
|
RU2231939C1 |
| METHOD OF REMOVAL OF DEFECTS IN MASK COATING | 1991 |
|
RU2017190C1 |
| METHOD FOR PRODUCING ALUMINIUM-CHROMIUM-TITANIUM COATINGS ON STEEL PRODUCTS | 0 |
|
SU912773A1 |
| METHOD OF METALLIC COATING APPLICATION TO MICROSPHERES | 2015 |
|
RU2642596C2 |
| DEPOSITION OF WEAR-PROOF COATING ON ALUMINIUM ALLOYS WITH HIGH SILICON CONTENT | 2014 |
|
RU2569199C1 |
| METHOD FOR DEPOSITION OF A WEAR-RESISTANT COBALT-CHROMIUM COATING ON ALUMINUM ALLOY SUBSTRATES | 2022 |
|
RU2791115C1 |
