Mirror-like finish

Preparation of the Pt(lll) Single-Crystal Electrode. The Pt single-crystal electrode was prepared according to the procedure developed by Clavilier (7) and oriented using the methodology of Hamelin (8). It was subsequently polished with alumina to a mirror-like finish. The quahty of the Pt(l 11) surface was verified by recording CV... 

Allow the resin to cure for 24 h. Polish off the excess resin with sand paper to expose the gold surface. Once the surface is exposed, continue polishing with 1.0 pm alumina slurry, followed by 0.3 and 0.05 pm alumina slurry on microcloth pads (from Buehler, IL, USA) to a mirror-like finish (about 3 min each). 

Dewars. Dewars are the best and most commonly used cryogenic containers in the laboratory. Their ability to maintain a temperature is exceptional. They are used in most labs where dry ice is found and in all labs where liquid nitrogen is found. Dewars are also found in many lunch boxes as Thermos bottles. Dewars are typically identifiable as a hollow-wall glass container with a mirror-like finish. That mirror finish is a very accurate description because the silver coating on Dewars is the same as is used on mirrors. 

In 2004, Treofan GmbH developed a metallised version of its PLA biodegradable film that reduces permeability aromas, oxygen and water. The metallised Biophan PLA film is said to be suitable for packaging fatty foods such as butter and cheese, as well as for confectionery, where the mirror-like finish adds a decorative feature to the barrier properties. The metallised film meets both EU and US, Food Drug Administration food contact requirements. 

Fig. 6.5 a Photograph of an as-deposited nontemplated Ni film showing a bright mirror-like finish (a), while the as-deposited DG Ni film is pitch black (b) that turns semi-transparent when oxidized (c). b As-deposited (a) and thermally oxidized (b) templated nickel pattern, c XRD pattern (Cu Ka radiation) for an as-deposited DG (a), a thermally annealed 520 nm thick DG (b), and two thermally annealed nontemplated films with a thickness of 210 and 70nm (c and d) on FTO-coated glass. The observed indexed peaks are matched with the corresponding tetragonal SnOi (PDF number 046-1088), cubic Ni (PDF number 004-0850), and cubic NiO (PDF number 047-1049). While the thinner nontemplated nickel deposit was fully oxidized, the nickel peaks are still present for the thicker film... 

Another practical apphcation of electrolysis is electroplating—the coating of one metal, which is made the cathode in an electrolysis cell, with another metal, which is made the anode. For example, dull iron or steel surfaces are electroplated with chromium to provide a mirror-like finish and also to protect against corrosion. 

Grinding materials for which mirror-like finish carmot be obtained through constant feed grinding... 

ELID-lap grinding of silicon with JK 4000 wheel outputs a mirror-like finish at roughness of 3.8 nm, as compared with 7.4 nm roughness outputted by a conventional lap-grinding. 

Mirror-like finish is accompanied by a homogenization mechanism by grinding heat and chip smearing. 

Mould release agents and processing additives are engineered to improve the production process and product quality. They facilitate optimum demoulding of the contents from the mould and the release agent should not transfer from the mould surface to the moulded part. Parts that are easily removed from the mould exhibit an attractive mirror-like finish and with less mould maintenance and wear, less cleaning of the part is required. 

The results showing the effect of the slip coefficient on the final shape of the extrudate are shown in Fig. 10. As in the two-dimensional case, die swell is reduced by wall slip and approaches 1 in the limit of perfect slip (i.e., P(i/H = 00). These results demonstrate that slip will reduce the distortion of the extrudate from that of the channel from which it emerges. Dies with wall slip would also exhibit less pressure drop than those without slip. For these reasons, die manufacturers have attempted to promote slip where possible. Internal die surfaces are ground to mirror like finishes, and in some cases, slip-enhancing coatings are applied near the exit of the die. Even so, introducing perfect slip is not achievable in practice. Therefore, the effects of die swell should be considered in the design of extrusion dies. 

The membrane should not only be dense but also as smooth as possible. A mirror-like finish without pores is desirable. Otherwise, sluggish response can be expected since all the concentration differences close to the interface should be in equilibrium. Concentration gradients must be balanced out by diffusion, and diffusion into and out of narrow pores is a slow process. 

Specular Gloss Mirror-like finish (usually 60 degrees on a 60-degree meter). 

Crocus Cloth n An iron-oxide coated abrasive cloth, used as a polishing agent after most of the work has been done with emery or aluminum oxide, capable of giving a mirror-like finish to metal. 

As another factor in determining the quality of the electrode material for electroanalysis, the absence of surface defects [45] is important. Polished polycrystalline BDD electrodes, which have a mirror like finish, can exhibit low background currents in voltammetric measurements, which lead to high S/B ratios, as for single-crystal homoepitaxial BDD electrodes. However, in the CV for serotonin (Fig. 8.6), one of the important bioamines, there is a... 

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