Clean surface to be soldered with an abrasive (pencil eraser) and wipe with alcohol.Wires (preferably #32 gauge or smaller).Shims are soldered to in the same way as the nickel electrode. 004” (.1mm) thick brass or stainless steel. Generally, the center shim layer of a 2-Layer piezoelectric bending elements is either. Vacuum deposited nickel electrodes are usually very thin, making soldering tricky.Ĭhoice of the correct flux (to remove surface oxidation) makes soldering to electrode surfaces easy even under adverse conditions.Ī wire is attached to the center shim if the element is used in parallel operation. Sometimes the phosphor content in a plating run can make it hard to solder. Electroless nickel, used for plating piezoceramic, contains phosphor. It can usually be soldered to easily with tin/lead solder. Nickel has good corrosion resistance and is a good choice for both AC and DC applications. Silver is soluble in tin and a silver loaded solder should be used to prevent scavenging of silver in the electrode. The glass makes the bond between the ceramic and the silver particles. It is generally screened onto the ceramic and fired. Silver used as an electrode is in the form of flakes suspended in a glass frit.
Silver electrodes are not recommended for high electric field DC applications where the silver is likely to migrate and bridge the two electrodes. Electrical connections are usually made to these electrodes by soldering, but one may also use conductive adhesive, or clips to attach wires. Soldering materials in our kit are for soldering to nickel electrodes unless specifically requested otherwise. Silver electrodes are flat white in color while nickel electrodes are grey. Piezoceramic electrodes will be either fired silver or nickel. Sealed Piezo Polarity & Connecting Multiple Piezos.This article provides resources on our material properties. We recognize the need to perform FEA and modeling to predict and design a piezoelectric transducer.
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