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Silver Ink is often used as a contact paste for electrochemical testing, and is especially useful for performing these types of tests at lower temperatures (less than 850°C). The silver ink is screen printable, for ease of application. It also can be used as a reference electrode.
Silver ink is also helpful for reducing resistance of electrical connections. This Silver ink is included in the SOFC Planar Test Fixtures (5 cm X 5 cm and 10 cm X 10 cm) to help increase the facilitate electrical contact between the current leads manifolds.
• Metal: Silver (Ag)
• Quantity: 10 grams • Solids Loading: 70% Silver by weight
• This is a great ink for making electrical connections for electrochemical testing of fuel cells, ceramic substrates, electrochemical materials, and metals.
• Stirring the ink before use is highly recommended. For best results, the ink should be stirred with a spatula or a sonic wand to achieve an even consistency prior to use.
• This ink is typically fired at 750°C or 850°C for 1 hour to ensure adhesion prior to testing at the desired test temperature.
• This ink can be used for screen printing for generating electrical connections for wire attachments.
Ensuring a solid connection between your electrodes and current collector is critical for obtaining good test results. Leveraging our experience in electrochemical testing, testing we have we offer the following suggestions for obtaining optimum results with our silver paste product.
Cut or punch out the metal mesh to the size/area that you want to test on your sample.
Cut the contact wire to the desired length, with a loop around the perimeter of the mesh with the wire extending past the sample. Place cut mesh in the center of your sample and the looped wire on top of wire mesh.
Apply the contact paste around the perimeter of the wire loop, apply a few drops across the mesh for best adhesion strength.
Cut and place a straight piece of wire next to the mesh on the sample. Again, cover with ink for adhesion. This will allow for 4 point conductivity testing and a lead for measuring voltage, while the other draws the current.
Dry in a 100°C oven for an hour or until the ink looks dry. Repeat all steps on the opposite of the sample in the same area.
Fire your sample to adhere your contact wires. Firing conditions: 1°C per minute to 800°C, hold for 1 hour, cool to room temperature sample in the same area.
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