Tasks for April 8
- To prepare an epoxy/10% TiO2 coating for adhesive test and corrosion potential test
- To begin corrosion potential measurements
Epoxy/10% TiO2 coating
- 0.85359 g of TiO2 were used
- 3.34919 g of JA-400
- 6.76336 g of epoxy
Gently stirred at 65°C for 15 min and then coated onto desired materials
Measuring electrode potential of Cu in copper sulfate solution
- 100 mL of 0.1 M CuSO4.5H2O will be used.
- (0.1mol/L)×(0.1 L)(249.6850 g/mol)=2.49685 g of CuSO4.5H2O needed in 100 mL
- Sand copper electrodes and wash with concentrated HNO3 under the hood
- Place Cu electrode and Ag/AgCl in copper sulfate solution and measure voltage. Note: single junction electrodes were used.
- Copper electrode 1: 73.1-72.8-72.7-72.6
- Copper electrode 2: 78.0-77.6-77.2-76.6-76.3-73.3-72.9-72.6
- Both copper electrodes stabilized at a voltage of 72.6 versus the AG/AgCl reference electrode in a 0.1 M solution of CuSO4
- both electrodes will be coated with epoxy to see how the voltage differs
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