Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate
The influence of sulfide (S<sup>2−</sup>) concentration on the corrosion resistance of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) cermet coating on Al7075 (EN, AW-7075) substrate (Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075) was investigated....
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MDPI AG
2025-03-01
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| author | Mieczyslaw Scendo |
| author_facet | Mieczyslaw Scendo |
| author_sort | Mieczyslaw Scendo |
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| description | The influence of sulfide (S<sup>2−</sup>) concentration on the corrosion resistance of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) cermet coating on Al7075 (EN, AW-7075) substrate (Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075) was investigated. The coating was produced by the cold-sprayed (CS) method. The Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coatings were modified chemically in solutions containing thioacetic acid amide (TAA). The surface and microstructure of the specimens were both observed by a scanning electron microscope (SEM). The mechanical properties of the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) coatings were characterized using microhardness (HV) measurements. The corrosion tests of the materials were carried out using the electrochemical method in a acidic chloride solution. The adsorbed (Me<sub>m</sub>S<sub>n</sub>)<sub>ads</sub> layer effectively separates the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coating surface from contact with the aggressive corrosive environment. More than a twice lower value of corrosion rate (CW) was obtained for the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coating after exposure to the environment with 0.15 M TAA. |
| format | Article |
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| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-02a83735f1c64c1daaa787fccbabc43e2025-08-20T03:43:37ZengMDPI AGMetals2075-47012025-03-0115327310.3390/met15030273Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 SubstrateMieczyslaw Scendo0Institute of Chemistry, Jan Kochanowski University in Kielce, Uniwersytecka 7, PL-25406 Kielce, PolandThe influence of sulfide (S<sup>2−</sup>) concentration on the corrosion resistance of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) cermet coating on Al7075 (EN, AW-7075) substrate (Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075) was investigated. The coating was produced by the cold-sprayed (CS) method. The Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coatings were modified chemically in solutions containing thioacetic acid amide (TAA). The surface and microstructure of the specimens were both observed by a scanning electron microscope (SEM). The mechanical properties of the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) coatings were characterized using microhardness (HV) measurements. The corrosion tests of the materials were carried out using the electrochemical method in a acidic chloride solution. The adsorbed (Me<sub>m</sub>S<sub>n</sub>)<sub>ads</sub> layer effectively separates the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coating surface from contact with the aggressive corrosive environment. More than a twice lower value of corrosion rate (CW) was obtained for the Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr)/Al7075 coating after exposure to the environment with 0.15 M TAA.https://www.mdpi.com/2075-4701/15/3/273cold sprayAl7075 substratecermet coatingcorrosion resistanceacidic chloride solutionsulfide |
| spellingShingle | Mieczyslaw Scendo Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate Metals cold spray Al7075 substrate cermet coating corrosion resistance acidic chloride solution sulfide |
| title | Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate |
| title_full | Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate |
| title_fullStr | Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate |
| title_full_unstemmed | Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate |
| title_short | Influence of Sulfide Concentration on the Properties of Cr<sub>3</sub>C<sub>2</sub>-25(Ni20Cr) Cermet Coating on Al7075 Substrate |
| title_sort | influence of sulfide concentration on the properties of cr sub 3 sub c sub 2 sub 25 ni20cr cermet coating on al7075 substrate |
| topic | cold spray Al7075 substrate cermet coating corrosion resistance acidic chloride solution sulfide |
| url | https://www.mdpi.com/2075-4701/15/3/273 |
| work_keys_str_mv | AT mieczyslawscendo influenceofsulfideconcentrationonthepropertiesofcrsub3subcsub2sub25ni20crcermetcoatingonal7075substrate |