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In physical chemistry and engineering, passivation is coating a material so that it becomes "passive", that is, less readily affected or corroded by the environment. . Passivation involves creation of an outer layer of shield material that is applied as a microcoating, created by chemical reaction with the base material, or allowed to build by spontaneous oxidation
Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing (especially in the metallography field), is an electrochemical process that removes material from a metallic workpiece, reducing the surface roughness by levelling micro-peaks and valleys, improving the surface finish.
Desizing, irrespective of what the desizing agent is, involves impregnation of the fabric with the desizing agent, allowing the desizing agent to degrade or solubilise the size material, and finally to wash out the degradation products. The major desizing processes are: Enzymatic desizing of starches on cotton fabrics; Oxidative desizing; Acid ...
Heat waves are sweaty, uncomfortable, even health-endangering, but scientists have come up with an innovation they say could provide relief.
Bluing only works on ferrous materials, such as steel or cast iron, for protecting against corrosion because it changes iron into Fe 3 O 4. As aluminium and polymers do not rust, they cannot be blued, and no corrosion protection is provided. However, the chemicals from the bluing process can cause uneven staining on aluminium and polymer parts.
Women washing clothes. Scouring is a preparatory treatment of certain textile materials. Scouring removes soluble and insoluble impurities found in textiles as natural, added and adventitious impurities: for example, oils, waxes, fats, vegetable matter, as well as dirt.
Buy: Tide to Go Instant Stain Remover 3 Pack $7.74 . Carbona Pro Care Laundry Stain Scrubber 3 Pack. Carbona has been making stain fighters for everything from clothing to granite for years.
There are four ways to apply a solvent to a fabric for removing stains: [1] Soaking. This is a common method used in households to remove a variety of stains. Depending on the stains composition, the stained material is left to soak in a container of warm or cool water and solvent.
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