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  2. Chemical milling - Wikipedia

    en.wikipedia.org/wiki/Chemical_milling

    Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape. [1] [2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is ...

  3. Etching - Wikipedia

    en.wikipedia.org/wiki/Etching

    ferric chloride may be used for etching copper or zinc plates, whereas nitric acid may be used for etching zinc or steel plates. Typical solutions are 1 part FeCl 3 to 1 part water and 1 part nitric to 3 parts water. The strength of the acid determines the speed of the etching process. The etching process is known as biting (see also spit ...

  4. Surface micromachining - Wikipedia

    en.wikipedia.org/wiki/Surface_micromachining

    Micro-machining starts with a silicon wafer or other substrate upon which new layers are grown. These layers are selectively etched by photo-lithography; either a wet etch involving an acid, or a dry etch involving an ionized gas (or plasma). Dry etching can combine chemical etching with physical etching or ion bombardment. Surface micro ...

  5. Photochemical machining - Wikipedia

    en.wikipedia.org/wiki/Photochemical_machining

    Photochemical machining (PCM), also known as photochemical milling or photo etching, is a chemical milling process used to fabricate sheet metal components using a photoresist and etchants to corrosively machine away selected areas. This process emerged in the 1960s as an offshoot of the printed circuit board industry.

  6. Etching (microfabrication) - Wikipedia

    en.wikipedia.org/wiki/Etching_(microfabrication)

    Etching tanks used to perform Piranha, hydrofluoric acid or RCA clean on 4-inch wafer batches at LAAS technological facility in Toulouse, France. Etching is used in microfabrication to chemically remove layers from the surface of a wafer during manufacturing. Etching is a critically important process module in fabrication, and every wafer ...

  7. Coating - Wikipedia

    en.wikipedia.org/wiki/Coating

    [3] [7] A pipe carrying water for a fire suppression system can be coated with a red (for identification) anticorrosion paint. Most coatings to some extent protect the substrate, such as maintenance coatings for metals and concrete. [8] A decorative coating can offer a particular reflective property, such as high gloss, satin, matte, or flat ...

  8. EPA bans consumer use of a toxic chemical widely used as a ...

    www.aol.com/news/epa-rule-bans-toxic-chemical...

    The chemical council also said it was concerned that the EPA had not fully evaluated the rule's impacts on the domestic supply chain and could end up prohibiting up to half of all end uses subject ...

  9. Ion milling machine - Wikipedia

    en.wikipedia.org/wiki/Ion_milling_machine

    Ion milling is a specialized physical etching technique that is a crucial step in the preparation of material analysis techniques. After a specimen goes through ion milling, the surface becomes much smoother and more defined, which allows scientists to study the material much easier.