FIELD: machine building.
SUBSTANCE: invention relates to power engineering and can be used for protection against erosion of steel working blades of wet-steam stages of turbines exposed to high-speed drop-impact action in corrosion-active media at increased fatigue loads. Coating contains an even number of successively alternating chromium microlayers and a chromium compound. Micro-layers of chromium compound are made of chromium carbide with thickness of 1.4±0.6 mcm. Chromium microlayers have thickness of 0.45±0.15 mcm. Total number of coating microlayers ranges from 6 to 10. Concentration of carbon atoms in coating is 3.25±0.25 at%.
EFFECT: higher corrosion properties and fatigue characteristics of coating with preservation of its high erosion resistance.
1 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF APPLYING AN EROSION-RESISTANT COATING ONTO THE SURFACE OF A STEEL BLADE OF A STEAM TURBINE | 2018 |
|
RU2710761C1 |
| METHOD OF APPLYING A CORROSION-RESISTANT COATING ON THE SURFACE OF A STEEL BLADE OF A STEAM TURBINE | 2018 |
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| METHOD OF DEPOSITION OF PROTECTIVE COATINGS ON DETAILS MADE OUT OF REFRACTORY ALLOYS | 2000 |
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| METHOD OF NANOCOMPOSITE COATING APPLICATION ONTO STEEL ARTICLE SURFACE | 2013 |
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| METHOD TO APPLY NANOCOMPOSITE COATING ONTO SURFACE OF ITEM FROM HEAT-RESISTANT NICKEL ALLOY | 2013 |
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RU2554828C2 |
