TY - JOUR
T1 - Chemically activated nanodiamonds for aluminum alloy corrosion protection and monitoring
AU - Hannstein, Inga
AU - Adler, Anne Katrin
AU - Lapina, Victoria
AU - Osipov, Vladimir
AU - Opitz, Jorg
AU - Schreiber, Jurgen
AU - Meyendorf, Norbert
PY - 2009/4/7
Y1 - 2009/4/7
N2 - In the present study, a smart coating for light metal alloys was developed and investigated. Chemically activated nanodiamonds (CANDiT) were electrophoretically deposited onto anodized aluminum alloy AA2024 substrates in order to increase corrosion resistance, enhance bonding properties and establish a means of corrosion monitoring based on the fluorescence behavior of the particles. In order to create stable aqueous CANDiT dispersions suitable for electrophoretic deposition, mechanical milling had to be implemented under specific chemical conditions. The influence of the CANDiT volume fraction and pH of the dispersion on the electrochemical properties of the coated samples was investigated. Linear voltammetry measurements reveal that the chemical characteristics of the CANDiT dispersion have a distinct influence on the quality of the coating. The fluorescence spectra as well as fluorescence excitation spectra of the samples show that corrosion can be easily detected by optical means. Furthermore, an optimization on the basis of "smart"- algorithms for the data processing of a surface analysis by the laser-speckle-method is presented.
AB - In the present study, a smart coating for light metal alloys was developed and investigated. Chemically activated nanodiamonds (CANDiT) were electrophoretically deposited onto anodized aluminum alloy AA2024 substrates in order to increase corrosion resistance, enhance bonding properties and establish a means of corrosion monitoring based on the fluorescence behavior of the particles. In order to create stable aqueous CANDiT dispersions suitable for electrophoretic deposition, mechanical milling had to be implemented under specific chemical conditions. The influence of the CANDiT volume fraction and pH of the dispersion on the electrochemical properties of the coated samples was investigated. Linear voltammetry measurements reveal that the chemical characteristics of the CANDiT dispersion have a distinct influence on the quality of the coating. The fluorescence spectra as well as fluorescence excitation spectra of the samples show that corrosion can be easily detected by optical means. Furthermore, an optimization on the basis of "smart"- algorithms for the data processing of a surface analysis by the laser-speckle-method is presented.
KW - Aluminum alloy
KW - Corrosion monitoring
KW - Corrosion protection
KW - Nanodiamonds
UR - http://www.scopus.com/inward/record.url?scp=66749114519&partnerID=8YFLogxK
UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7293/1/Chemically-activated-nanodiamonds-for-aluminum-alloy-corrosion-protection-and-monitoring/10.1117/12.815486.short?SSO=1
U2 - 10.1117/12.815486
DO - 10.1117/12.815486
M3 - Conference article
AN - SCOPUS:66749114519
SN - 0277-786X
VL - 7293
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 72930O
T2 - Smart Sensor Phenomena, Technology, Networks, and Systems 2009
Y2 - 9 March 2009 through 11 March 2009
ER -