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Abrasion treatments

Faust (1.3) used die etching rate method on both german-ium and silicon and covered a wide range of abrasive particle sizes. Some of his data are shown in Fig. 5 (14), He found that for a given abrasive treatment the depth of damage on silicon was about one fourth that on germanium. [Pg.114]

Fig. 6 (a) Fhotomagnetoelectric method. Open circuit voltage measurements. Abrasive treatment to be studied is given to illuminated surface. [Pg.116]

Fig. 6 (b) Change of PME voltage with etching after various abrasive treatments on germanium. Normalized curves. [Pg.117]

Post-inflammatory hyperpigmentation PIH may occur with abrasive treatments. The abrasive protocol includes preparing the skin with Blending Bleaching cream... [Pg.128]

Along with laser and abrasion treatment, a full-face phenol peel is certainly one of the best options for treating facial scars. It is not completely effective, however, and it is often necessary to use chemabrasion - that is, a combination of a phenol peel followed (immediately or the next day) by abrasion with a diamond fraise or sandpaper. See Chapter 30 for more information on the treatment of acne scars and phenol peel face lifts. [Pg.162]

Open healing is slower than when the re-epithelializing wound is covered. This does not matter for intraepidermal peels, as the dermis is still covered by several layers of living and protective keratinocytes. On the other hand, when it comes to medium or deep peels, this is of major importance. Peels have an advantage over laser or mechanical abrasive treatments in that they leave a layer of skin in place. This layer of skin is of course dead, but it offers pro-... [Pg.342]

Scratch hardness is particularly important in plastics used for their optical properties and is usually determined by some of mar-resistance test. In one type of test a specimen is subjected to an abrasive treatment by allowing exposure to a controlled stream of abrasive, and its gloss (specular reflection) is measured before and after the treatment. In some tests the light transmission property of the plastic is measured before and after marring. [Pg.331]

Abrasive treatments consist of scouring, machining, hand sanding, and dry and wet abrasive blasting. The abrasive medium can be fine sandpaper, carborundum or alumina abrasives, metal wools, or abrasive shot. Mechanical abrasion is usually preceded and followed by solvent cleaning. The choice is generally determined by available production facilities and cost. [Pg.442]

Mechanical inodifications Included here are simple washes and abrasion treatments of polymer surfaces. Thermal conditioning procedures also fall into this category. [Pg.42]

There are several important steps in this process. Eirstly, the bonding surface should be solvent cleaned to remove all grease and dirt (Degreasing) and then all paint should be removed, taking care not to abrade into the first fibre layer. Paint removal may require a coarser grade of paper than abrasion for surface preparation for bonding (Abrasion treatment), (jrade 150 is approved by some SRMs. Paint strippers are not recommended as they may dissolve the resin in the composite. [Pg.166]

Detailed recipes for pre-treatment of copper, (which are also suitable for some copper alloys) are given in Refs. [1-4]. The simplest treatment consists of abrasion (see Abrasion treatment) with emery cloth followed by Degreasing in a chlorinated hydrocarbon solvent. Most of the treatments recommend a more elaborate routine of (1) degrease (2) etch and (3) dry. Etching solutions for use at ambient temperature include iron(III) chloride in either nitric or hydrochloric acid. Immersion for between 1 and 3 min is advised. Ammonium persulphate solution (1 3 or 1 4 parts by weight) is also used at room temperature perhaps for times as short as 30 s. ... [Pg.371]

Abrasion treatment J F WATTS Removal of loose layers, roughening, improved adhesion... [Pg.648]

Variant 1. GMC+1.5% by mass of the photoinitiator. Plates were prepared by abrasive treatment of their surface and purification with acetone. [Pg.305]


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See also in sourсe #XX -- [ Pg.99 ]

See also in sourсe #XX -- [ Pg.2 ]




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