In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3
Here we describe the synthesis and evaluation of a molecular corrosion sensor that can be applied in situ in aerospace coatings, then used to detect corrosion after the coating has been applied. A pH-sensitive molecule, 4-mercaptopyridin (4-MP), is attached to a gold nanoparticle to allow surface-en...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/25/1/179 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841548952595333120 |
|---|---|
| author | Adrienne K. Delluva Ronald L. Cook Matt Peppel Sami Diaz Rhia M. Martin Vinh T. Nguyen Jeannine E. Elliott Joshua R. Biller |
| author_facet | Adrienne K. Delluva Ronald L. Cook Matt Peppel Sami Diaz Rhia M. Martin Vinh T. Nguyen Jeannine E. Elliott Joshua R. Biller |
| author_sort | Adrienne K. Delluva |
| collection | DOAJ |
| description | Here we describe the synthesis and evaluation of a molecular corrosion sensor that can be applied in situ in aerospace coatings, then used to detect corrosion after the coating has been applied. A pH-sensitive molecule, 4-mercaptopyridin (4-MP), is attached to a gold nanoparticle to allow surface-enhanced Raman-scattering (SERS) for signal amplification. These SERS nanoparticles, when combined with an appropriate micron-sized carrier system, are incorporated directly into an MIL-SPEC coating and used to monitor the process onset and progression of corrosion using pH changes occurring at the metal–coating interface. The sensor can track corrosion spatially as it proceeds underneath the coating, due to the mobility of the proton front generated during corrosion and the homogeneous distribution of the sensor in the coating layer. To our knowledge, this report is the first time a 4-MP functionalized gold nanoparticle has been used, along with SERS spectroscopy, to monitor corrosion in an applied commercial coating in a fast, non-contact way. |
| format | Article |
| id | doaj-art-d644be15dbe342b58941eb93e5116913 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-d644be15dbe342b58941eb93e51169132025-01-10T13:21:08ZengMDPI AGSensors1424-82202024-12-0125117910.3390/s25010179In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3Adrienne K. Delluva0Ronald L. Cook1Matt Peppel2Sami Diaz3Rhia M. Martin4Vinh T. Nguyen5Jeannine E. Elliott6Joshua R. Biller7TDA Research Inc., Golden, CO 80403, USAMolecular Design Innovations, LLC, Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USATDA Research Inc., Golden, CO 80403, USAHere we describe the synthesis and evaluation of a molecular corrosion sensor that can be applied in situ in aerospace coatings, then used to detect corrosion after the coating has been applied. A pH-sensitive molecule, 4-mercaptopyridin (4-MP), is attached to a gold nanoparticle to allow surface-enhanced Raman-scattering (SERS) for signal amplification. These SERS nanoparticles, when combined with an appropriate micron-sized carrier system, are incorporated directly into an MIL-SPEC coating and used to monitor the process onset and progression of corrosion using pH changes occurring at the metal–coating interface. The sensor can track corrosion spatially as it proceeds underneath the coating, due to the mobility of the proton front generated during corrosion and the homogeneous distribution of the sensor in the coating layer. To our knowledge, this report is the first time a 4-MP functionalized gold nanoparticle has been used, along with SERS spectroscopy, to monitor corrosion in an applied commercial coating in a fast, non-contact way.https://www.mdpi.com/1424-8220/25/1/179aluminummetal coatingsEISRaman spectroscopyacid corrosionpitting corrosion |
| spellingShingle | Adrienne K. Delluva Ronald L. Cook Matt Peppel Sami Diaz Rhia M. Martin Vinh T. Nguyen Jeannine E. Elliott Joshua R. Biller In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 Sensors aluminum metal coatings EIS Raman spectroscopy acid corrosion pitting corrosion |
| title | In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 |
| title_full | In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 |
| title_fullStr | In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 |
| title_full_unstemmed | In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 |
| title_short | In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 |
| title_sort | in situ raman spectroscopy for early corrosion detection in coated aa2024 t3 |
| topic | aluminum metal coatings EIS Raman spectroscopy acid corrosion pitting corrosion |
| url | https://www.mdpi.com/1424-8220/25/1/179 |
| work_keys_str_mv | AT adriennekdelluva insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT ronaldlcook insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT mattpeppel insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT samidiaz insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT rhiammartin insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT vinhtnguyen insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT jeannineeelliott insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 AT joshuarbiller insituramanspectroscopyforearlycorrosiondetectionincoatedaa2024t3 |