摘要:
Methods and systems of electrochemically machining a component are provided. The method may include applying two or more potentials to a tool electrode comprising an array of two or more individual electrodes to generate two or more electric fields in between the tool electrode and a workpiece opposite of the tool electrode, wherein each of the two or more electric fields is generated by one of the array of two or more individual electrodes.
摘要:
A method for fabricating a microelectromechanical system device. Submerging a microelectromechanical system device in water. The microelectromechanical system devices include a sacrificial layer deposited on the surface of a substrate between the portion of a structural layer to be freed for movement and a base. Anodically etching the sacrificial layer from the microelectromechanical device to free the portion of the structural layer for movement. A system comprising a solution of water, a microelectromechanical system device including a sacrificial layer of chromium deposited on the surface of a substrate between a portion of a structural layer and a base. The microelectromechanical system device is submerged in the solution of water. An electrode is submerged in the water. The electrode provides a negative bias. A voltage source provides a positive bias to the sacrificial layer of chromium, anodically etching the sacrificial layer of chromium and freeing the portion of the structural layer.
摘要:
A method for creating a chrome-plated surface having a matte finish that typically includes: controlling a resistance of a current bridge circuit; depositing a first chromium layer on a substrate positioned in a chromium bath, wherein the first chromium layer is deposited by supplying current from a power source that is electrically connected to the substrate and to anodes positioned in the chromium bath; etching the first chromium layer by engaging a current bridge that closes the current bridge circuit; depositing a first intermediate chromium layer, wherein the first intermediate chromium layer is deposited by supplying current from the power source; etching the first intermediate chromium layer, wherein the first intermediate chromium layer is etched by engaging the current bridge; and depositing a final chromium layer, wherein the final chromium layer is deposited by supplying current from the power source.
摘要:
This disclosure provides a method for treating an etching waste liquid from an etching process of indium tin oxide comprising hydrochloric acid, acetic acid, tin ions, indium ions and water, comprising the steps of: distilling the etching waste liquid to obtain a distillate comprising hydrochloric acid and acetic acid and a post-distillation liquid comprising tin ions and indium ions; generating a precipitate by reacting tin ions in the post-distillation liquid with sulfide ions to remove tin ions from the solution so as to obtain a post-precipitation solution containing indium ions; and electrolyzing the post-precipitation solution to obtain crude indium.
摘要:
An electrical probe configured to measure an electrical response from a biological cell includes a microwire having a sharpened tip, a catalyst layer formed on the sharpened tip of the microwire, and an array of nanotube electrodes vertically aligned on the catalyst layer.
摘要:
There is disclosed a method for edge rounding of cutting tool inserts, in combination with a high surface finish over the whole insert, of cemented carbide or titanium-based carbonitride alloys. An electrolytic method is used with an electrolyte which provides an even removal of both binder phase and hard constituent phases. The electrolyte comprises perchloric (HClO.sub.4) or sulphuric (H.sub.2 SO.sub.4) acid, in amounts >15 and
摘要翻译:公开了一种用于在硬质合金或钛基碳氮化物合金上切削刀具刀片的边缘圆化与整个刀片上的高表面光洁度相结合的方法。 电解方法与电解质一起使用,其提供粘结相和硬组分相的均匀去除。 在甲醇或其它合适的有机液体中,电解质包含量大于15和<50体积%的高氯酸(HClO4)或硫酸(H 2 SO 4)酸。 该方法比常规机械方法更容易控制,并且特别适用于提供非常小的边缘半径约10微米,并且在整个插入件上结合高表面光洁度,这不能通过机械或其它电解方法来制造。
摘要:
Tungsten-to-quartz seals are improved by electrochemically etching drawn, ground tungsten rod until some of the original draw lines appear and then using the so treated rod in the seal formation. The etching is carried out in a solution of NaNO.sub.2 ; NaOH; and H.sub.2 O.
摘要:
A method of electrochemically processing the surface of a workpiece of modenum or of an alloy containing a high proportion of molybdenum. The workpiece is connected as an anode in an electrolytic solution comprising 70 to 90% by volume of 2-propanol and 30 to 10% by volume of concentrated sulfuric acid.
摘要:
Apparatus for the electrochemical deburring of metallic workpieces in which a fixture forms a support for the workpieces which, together with carbon particles and/or other abrasive particles, are agitated in an electrolyte.
摘要:
A TUNGSTEN FILM IS ETCHED ELECTROLYTICALLY IN A SOLUTION WHICH ALSO ACTS AS A CHEMICAL ETCHANT. THE CHEMICAL ACTION OF THE ETCHANT REMOVES THE LAST TRACES OF TUNGSTEN AFTER THE ELECTROLYTIC ETCHING ACTION IS TERMINATED BY BREAK-UP OF THE TUNGSTEN LAYER INTO A NUMBER OF THIS ELECTRICALLY ISOLATED "ISLANDS."