FIELD: metallurgy.
SUBSTANCE: invention refers to process of removing protective coating, particularly for removing coating out of titanium nitride off surface of items out of titanium alloys and can be implemented in aircraft and power turbine engineering at repair of compressor blades. The composition contains, wt %: 38.5 - 40.5 of nitric acid, 59.2 - 61.3 of hydrofluoric acid, 0.1 - 0.3 of phenyl amine. By treating the item in the disclosed solution coating out of titanium nitride is completely removed off surface of items out of titanium alloys in 1-4 minutes without considerable substrate etching.
EFFECT: raised efficiency of protective coating removal.
1 tbl,1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| REMOVAL METHOD OF COATINGS FROM TITANIUM NITRIDE FROM SURFACE OF PARTS FROM TITANIUM ALLOYS | 2011 |
|
RU2471017C1 |
| METHOD OF PLASMA-ELECTROLYTIC REMOVAL OF COATINGS FROM TITANIUM NITRIDES OR THOSE OF COMPOUNDS OF TITANIUM WITH METALS | 2011 |
|
RU2467098C1 |
| METHOD FOR ELECTROLYTE-PLASMA REMOVAL OF POLYMER COATINGS FROM SURFACE OF PART FROM ALLOYED STEELS | 2013 |
|
RU2566139C2 |
| METHOD FOR ELECTROLYTE-PLASMA REMOVAL OF POLYMER COATINGS FROM SURFACE OF LAMINATED TORSION BAR OF HELICOPTER MAIN ROTOR | 2014 |
|
RU2556251C1 |
| SOLUTION FOR PICKLING COATINGS OF TITANIUM NITRIDE | 1990 |
|
RU2019579C1 |
| REMOVAL METHOD OF ZIRCONIUM NITRIDE COATING FROM SUBSTRATE OUT OF TITANIUM OR TITANIUM ALLOYS | 2013 |
|
RU2545975C1 |
| COMPOSITION FOR REMOVING COATING OF TITANIUM NITRIDES | 1996 |
|
RU2101389C1 |
| SOLUTION FOR PICKLING TITANIUM ALLOYS | 0 |
|
SU1355645A1 |
| COMPOSITION FOR CLEANING OF METALLIC SURFACES FROM COMPLEX NITRIDE COATINGS | 1999 |
|
RU2151821C1 |
| TECHNOLOGY OF CHEMICAL TREATMENT OF ARTICLES MADE OF TITANIUM OR ITS ALLOYS | 1999 |
|
RU2196848C2 |
