Mu-metal is a soft alloy of two important metals that are nickel and iron. This alloy has the characteristic function as a low frequency ferromagnetic material in the different applications like Mu-metal etching. The percentage of the metals in this alloy are 80% nickel and 20% iron. Moreover, other metals may also present in the alloy that depends upon the composition and formula of the alloy.
When there is a magnetic field around this metal, the metal arranges its domains in a particular manner. However, this aligning produces a new field around this field. When there is a superposition of these two fields, the overall effect of the fields diminishes. Therefore, we can observe the lower magnetic field around the metal.
The process of etching in chemistry is the technique for the engraving on the metal. This is a technical process that occurs at the high temperature and pressure. There is a spray that we can apply on the surface of the material in order to remove the material. This process of removing the material with the help of the spray helps in the engraving of specific designs on the alloy.
An etching machine is a helpful tool in the process of Mu-metal etching. It encompasses the process of the etching on the surface of the metal by making a corrosive reaction between the material and the chemical. The machine sprays the chemical at the high pressure at temperature by heating the used chemical in the process.
In this process, there is a resist that we use in the etching of the chemical. This resist helps in the removing of the material from the surface of alloy selectively. This helps in the formation of the specific design on the surface of the alloy. The chemical sprayed by the etching machine forms the special designs by dissolving it atom by atom and making the specialized design on it.
In the terms of engineering, etching is process of engraving the specific designs on the surface of the metal. We implement these designs on the surface of metal with the help of a chemical solution. The chemical for the process of etching is usually an acid. This process dissolves the material from the metal and thus engraves a specific design on the surface of the metal.
Therefore, the process of etching in the engineering purposes is defined as the technique to etch the designs and engravings on the surface of the metal piece. This is a controlled process that is corrosive in nature. We use a specific chemical solution in this process. This chemical helps in the removal of the material from the surface of the metal.
The process of the Mu-metal etching has the certain steps in the way. These steps for this process are as follows.
The first step of the etching is the cleaning and rinsing of the material before doing the etching on that material. The process of cleaning and rinsing removes the scratches and dirt from the surface of the material. The process of the etching however shows the slight tooth in the process. Therefore, it allows the ink to go deep in the material during the process of Mu-metal etching.
After finishing the metal surface, the next step is the finishing of the metal surface. However, the finishing of the surface occurs with the help of the scrub or the rubbing process. Therefore, it completes the first step of the etching with the cleaning and finishing.
The process of drawing and writing on the surface of the finished metal is the second step of the etching. In this step, we engrave the specific design on the surface of the metal with the help of the tools. There are different sizes and shapes for the purpose of the drawing and writing. However, the manufacturers prefer the pens with the fine and wide pins.
This step of the process is particularly helpful in the creation and production of the resist on the surface of the cleaned metal. The ink of the pen tool acts as the resist on the surface of the metal. Thus, the process of the drawing and writing is the basic step the etching process for the development of the design. This step is very essential in the accurate production of the design during the process of Mu-metal etching.
The brown packing tape is a very useful material that can act as the resist on the surface of the metal. Therefore, we can use it as the resist for the etching purposes. It can produce the resist properties on the surface. The advantage of this material as a resist is that it can remain for the longer time and has quite greater efficiency as compared to the ink.
The use of the brown packing tape is also beneficial in the process of creating the geometric shapes on the surface of the metal alloy. The manufacturers use this tape to stick on the surface of the alloy in the process of Mu-metal etching. After sticking it, they cut the tape according to the design of the surface of the metal alloy with the help of a special knife.
The last and final step of the etching process is the protection of the surface of metal alloy from the ink. We can use the tan tape for the purpose of the protection of the metal surface. This tan tape prevents the damage and assists in the protection of the metal surface from the ink. In the most cases, the manufacturers apply this tan tape on the edges and back of the metal surface.
In addition to the protection of the metal surface, this step is helpful in the prevention of the wastage of the ink. After this methodology, put the etchant in the plastic container. The piece of the MU-metal in the etchant is present and has the face of it downward facing the design. After putting the piece into the etchant, agitate the container by holding the sides of the container in the last step of the Mu-metal etching.
There are two basic types of the etching process based on the type of substrate used in the process. These two types are wet etching and dry etching. In the wet etching, the process of dissolution of the metal accomplishes with the help of the chemical solution. While the process of the dry etching is the technique in which the metal dissolves with the help of the vapor phase etchant.
The wet Mu-metal etching is a process of etching that is the simplest method. The requirement of the process is a container that has the chemical solution in it. This chemical solution dissolves the material under consideration.
The dry etching is a process in which the material dissolves in the form of the vapor phase etchant. There are further three divisions of the dry etching. These three classifications are reactive ion etching (RIE), sputter etching (SE) and vapor phase etching (VPE).
