Woods alloy

A mixture of 0.16g of lutetium monophthalocyaninate acetate and 0.3g of dicyanobenzo-15-crown-5 (DCBC), dried in vacuo, was rafted (melted) in a vacuum glass ampoule, immersed in Wood alloy, at successive increases of temperature from 240 to 260°C. The melted phase was kept at 260°C for 0.5 hr. The molar ratio of the initial reagents Lu salt DCBC was chosen as... 

Wood alloys (examples 14-18, Table 8). This class includes soft alloys that can absorb a large amount of lithium at relatively low potentials and low voltammetric changes. 

The related curves are given in Vol. Hi, pp. 250, 251,262 and reproduced now in Fig. I. Both curves (T -sensitivity to elevated temperature, Af-sensitivity to impact) are clearly composed of two parts and II. (Curve T was established by determining the temperature of ignition of the samples of 5 g in test tubes placed in wood alloy at 150 C by increasing the temperature of the alloy at the rate of lO C/min. The sensitivity to impact is expressed in ordinates as the work in kg/cm produces 50% of explosion). The sensitivity to impact is manifest by a shape where fraction I of the curve M indicates the increase of the sensitivity of compound A by adding a less sensitive compound B, This is rationalized in terms of the friction between two foreign solid particles. 

An article by Kormosh et al. compares the properties of various electrodes for determination of indomethacin a classic electrode with a polymer membrane, a solid-state electrode, and a Wood alloy in PVC tube, in which membranes were prepared using PVC and graphite [81]. The active ingredient applied was an ion-pair type complex of indomethacin with Rhodamine B. The optimum sensor turned out to be the solid-state one based on PVC. By comparing it with another solid-state sensor (BMSA type electrode)... 

On the other hand, Woods alloy or Indium once heated to its liquid form can be poured into the cavity of a sample holder. 

Imbedding the grains of interest along with a suitable reference sample on the surface of the support used (epoxy. Woods alloy. Indium, etc.) before it cures/cools. Note These should all be in close proximity to each other with their locations well characterized. 

In ancient India, a steel called wootz was made by placing very pure kon ore and wood or other carbonaceous material in a tightly sealed pot or cmcible heated to high temperature for a considerable time. Some of the carbon in the cmcible reduced the kon ore to metallic kon, which absorbed any excess carbon. The resulting kon—carbon alloy was an excellent grade of steel. In a similar way, pieces of low carbon wrought kon were placed in a pot along with a form of carbon and melted to make a fine steel. A variation of this method, in which bars that had been carburized by the cementation process were melted in a sealed pot to make steel of the best quaUty, became known as the cmcible process. 

Wood is widely used as a stmctural material in the chemical industry because it is resistant to a large variety of chemicals. Its resistance to mild acids is far superior to that of steel but not as good as some of the more expensive acid-resistant alloys. Wood tanks used to store cold, dilute acid have a relatively long service life. However, increasing concentration or temperature causes the wood tank to deteriorate rapidly (6). 

The commercial uses of arsenic compounds in 1988, measured in terms of elemental arsenic, are wood (qv) preservatives, 69% agricultural products (herbicides (qv) and desiccants (qv)), 23% glass (qv), 4% nonferrous alloys and electronics, 2% and animal feed additives and pharmaceuticals (qv), 2% (see Feeds AND feed additives). Chromated copper arsenate (CCA) [11125-95-4] is the most widely used arsenic-based wood preservative. The Environmental Protection Agency has, however, restricted the use of arsenical wood preservatives to certified appHcators. 

Although metals and alloy substrates account for much of the volume ia electroplating, there is a large and growing amount of plastic surfaces being plated, both for decorative trim and for electronic shielding appHcations. On a smaller scale, other materials that ate plated iaclude wood (qv), plaster, fibers (qv) and cloth materials, and plant and animal tissue, such as leaves, leather (qv), paper (qv), and seasheUs. 

Materials of Construction A wide variety of materials is available for tanks, as indicated earlier. Most mechanisms are made of steel however, submerged parts may be made of wood, stainless steel, rubber-covered or coated steel, or special alloys. 

Other than the wear problems, actual in-plant maintenance usually involves removal of wood, pieces of blasting wire, and other trash from the ports. When a reagentized feed is used, layers of oily reagents can build up on the spiral surface and sometimes require scrubbing for removal. With feeds containing oily reagents that attack rubber, ra-sion-resistant alloy spiral sections are used. 

The properties of wood are generally inferior to those of metals. But the properties per unit weight are a different matter. Table 26.4 shows that the specific properties of wood are better than mild steel, and as good as many aluminium alloys (that is why, for years, aircraft were made of wood). And, of course, it is much cheaper. 

Oils, grease, hydrogen, flammable liquids, solids or gases Acetic anhydride, bismuth and its alloys, alcohol, paper, wood, grease, oils Acids (organic or mineral), avoid friction, store cold Air, oxygen... 

Acetic anhydride, bismuth and its alloys, alcohol, paper, wood, grease, oils. 

Combustible dusts include metal dust (e.g., aluminum, magnesium, and their commercial alloys), carbonaceous dust (e.g., carbon black, charcoal, and coal), flour, grain, wood, plastics, and chemicals. 

Knet-gummi, n. a soft cleaning composition, art gum. -holz, Ti. plastic wood, -legienmg, /. wrought alloy, -maschine, -mUhle,/. kneading machine, malaxator masticator (Ceram.) pug mill. 

The shell may be of metal (steel, alloy, or non-ferrous), plastic, wood or some combination which may require the addition of liners or inner layers of rubber, plastic or brick. The mechanical problems of attaching inner nozzles, supports and brick require considerable attention that is not an integral part of sizing the equipment. Figures 9-2A-C show a typical large steel brick-lined-membrane lined tower with corbeled brick support locations. In these towers, temperature and/or corrosive conditions usually dictate the internal lining, and the selection of the proper acid- (or alkali-) proof cements. 

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