摘要:
Die Erfindung betrifft ein Verfahren zur Abscheidung von Nickel-Metall-Schichten zur Färbung von Oberflächen, sowie ein Bad zur Abscheidung einer solchen Schicht. Dies wird durch Abscheiden einer Nickel-Metall-Schicht aus einem Bad für die stromlose Abscheidung von Nickel ermöglicht, welches mindestens eine weitere Metallverbindung enthält, wobei zusätzlich eine Spannung angelegt wird, um den Einbau des Metalls der Metallverbindung unter Bildung einer Nickel-Metall-Schicht zu ermöglichen.
摘要:
A method of producing a composite electroless nickel layer on a substrate is described. The method includes the steps of contacting the substrate with a composite electroless nickel plating bath and generating an electrostatic field in the electroless nickel plating bath. The electric field is generated by placing an anode in the electroless nickel plating bath and connecting the anode to a positive terminal of a DC rectifier, and connecting the substrate to a negative temiinal of the DC rectifier, and preferably inserting a capacitor into the circuit to prevent passage of current. An attractive force generated by the electrostatic field increases the attraction of the positively charged PTFE particles to the negatively charged substrate and drives the positively charged PTFE particles to the negatively charged substrate.
摘要:
A method and system for controlling an electroless deposition process are provided. The system generally includes an electroless plating cell having a work piece to be plated positioned therein, the work piece also being positioned in communication with an electroless plating solution contained by the plating cell, and a voltage measurement device in communication with the work piece and the electroless plating solution, the voltage measurement device being configured to measure the electrical potential difference between the work piece and the plating solution. The system further includes a control voltage device in communication with the work piece and being configured to apply a determined control voltage to the work piece, and a system controller in communication with the voltage measurement device and the control voltage device, the system controller being configured to receive an input from the voltage measurement device and to generate a control voltage output corresponding to the determined control voltage, the output being sent to the control voltage device to cause the control voltage device to apply the determined control voltage to the work piece.
摘要:
An electroless plating method and apparatus enable electroless plating of hollow conductors and stator bars over an extremely wide range of sizes, in particular such that the relation between length (L) and inner equivalent diameter (IDe) of said hollow conductors ranges up to 5000:l. Furthermore, the method and apparatus are applied to mounted stator bars whereby there is no need to disassemble the hydro- or turbogenerator hence avoiding prolonged outages.
摘要:
A hybrid electro-electroless deposition process whereby multiple metal films layers are deposited from a single plating solution which includes both electroless and electroplating components. The article to be plated is immersed in the solution, and electric current is selectively applied at determined voltages for predetermined times, at selected intervals to effect electroplating in conjunction with electroless deposition. Electroplated metal layers are interspersed with electroless deposited metal layers.
摘要:
The invention concerns a method for depositing nickel-metal layers for colouring surfaces, and a bath for depositing such a layer. This is made possible by depositing a nickel-metal layer from a bath for the electroless deposition of nickel which contains at least one further metal compound, a voltage being additionally applied to make it possible for the metal of the metal compound to be incorporated while forming a nickel-metal layer.