Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Laminates, deposition

Spray guns are available for gelcoat, chopper, saturator and flow coater, at outputs of 3.6-9 kg (8-20 lb)/min resin, 1.8 kg (41b)/min glass two-strand chopper, or 1.1 kg (2.61b)/min one-strand chopper, giving a total laminate deposition of 5.4 kg (12 lb)/min with two strands. Air consumption is 9-10 ft /min. For higher volumes, four- and six-strand choppers are also available, dispensing 17-19 kg/min resin and 33% glass content. [Pg.296]

The Fe, Co, and Ni deposits are extremely fine grained at high current density and pH. Electroless nickel, cobalt, and nickel—cobalt alloy plating from fluoroborate-containing baths yields a deposit of superior corrosion resistance, low stress, and excellent hardenabiUty (114). Lead is plated alone or ia combination with tin, iadium, and antimony (115). Sound iasulators are made as lead—plastic laminates by electrolyticaHy coating Pb from a fluoroborate bath to 0.5 mm on a copper-coated nylon or polypropylene film (116) (see Insulation, acoustic). Steel plates can be simultaneously electrocoated with lead and poly(tetrafluoroethylene) (117). Solder is plated ia solutioas containing Pb(Bp4)2 and Sn(Bp4)2 thus the lustrous solder-plated object is coated with a Pb—Sn alloy (118). [Pg.168]

Thin-film media can be made by various technologies, eg, sputtered deposited Co—Cr—X films for longitudinal appHcations, laminated media for hard disk apphcation, metal evaporated tape, and multilayers for possible appHcations in magnetooptic recording. [Pg.184]

Tubercles consisted of hard, hlack oxide shells overlaid with friable carbonate-containing deposits. In places, several laminate black magnetite shells existed. The outer crust could be crushed by gentle pressure with a finger. Tubercles were riddled with white crystalline fibers. Other detritus was incorporated into the tubercle core and crust. Metal loss was less than 0.030 in. (0.076 cm) below each tubercle. Wall thickness was almost 0.25 in. (0.64 cm). [Pg.64]

Figure 15.13 Cracking in weld deposit caused by lamination in steel base metal. (Reprinted with permission from Helmut Thielsch, Defects and Failures in Pressure Vessels and Piping, New York, Van Nostrand Reinhold, 1965.)... Figure 15.13 Cracking in weld deposit caused by lamination in steel base metal. (Reprinted with permission from Helmut Thielsch, Defects and Failures in Pressure Vessels and Piping, New York, Van Nostrand Reinhold, 1965.)...
Spray molding is the modification of the hand-lay process where the resin and glass fiber are deposited simultaneously on the molding tool. The fibers are mixed with the resin at the spray head before being deposited on the mold surface. Subsequent consolidation of the laminate is achieved by rolling in a similar manner to the hand-lay process. This method is suitable for large components. Here the capital cost is higher and the process is very operator sensitive. [Pg.817]

Silver is often preferred as an undercoat for rhodium by reason of its high electrical conductivity. A further advantage of silver in the case of the thicker rhodium deposits (0-0025 mm) applied to electrical contacts for wear resistance is that the use of a relatively soft undercoat permits some stress relief of the rhodium deposit by plastic deformation of the under-layer, and hence reduces the tendency to cracking , with a corresponding improvement in protective value. Nickel, on the other hand, may be employed to provide a measure of mechanical support, and hence enhanced wear resistance, for a thin rhodium deposit. A nickel undercoating is so used on copper printed connectors, where the thickness of rhodium that may be applied from conventional electrolytes is limited by the tendency of the plating solution to attack the copper/laminate adhesive, and by the lifting effect of internal stress in the rhodium deposit. [Pg.561]

The Onnagawa Formation conformably overlies the Nishikurosawa Formation and is composed of siliceous shale and shale. The rocks are characterized by organic-rich laminated diatomaceous deposits, siliceous microfossils, and fish bones, while foraminiferal fossil is poor in amounts. The total thickness is about 3(X) m. The age of base of the Onnagawa Formation is estimated to be 12.9 Ma based on diatoms (Koizumi and Matoba, 1989). The age of the top of the Formation is 5.8 Ma. [Pg.215]

Figure 6.17. Scheme, according to Roman etal. (1997), of the deposition of nano-laminate coatings via the pulsed laser ablation technique. 1 Vacuum, chamber, 2 Ti-6A1-4V substrate holder and heater, 3 deposit (nanometer range), 4 laser-induced plasma, 5 target (TiB2/TiN),... [Pg.596]


See other pages where Laminates, deposition is mentioned: [Pg.185]    [Pg.194]    [Pg.124]    [Pg.589]    [Pg.185]    [Pg.194]    [Pg.124]    [Pg.589]    [Pg.114]    [Pg.382]    [Pg.389]    [Pg.514]    [Pg.310]    [Pg.184]    [Pg.528]    [Pg.154]    [Pg.129]    [Pg.137]    [Pg.388]    [Pg.393]    [Pg.95]    [Pg.102]    [Pg.475]    [Pg.195]    [Pg.112]    [Pg.112]    [Pg.660]    [Pg.6]    [Pg.19]    [Pg.20]    [Pg.439]    [Pg.562]    [Pg.153]    [Pg.451]    [Pg.153]    [Pg.125]    [Pg.126]    [Pg.251]    [Pg.508]    [Pg.255]    [Pg.179]    [Pg.225]    [Pg.50]    [Pg.595]   
See also in sourсe #XX -- [ Pg.126 ]




SEARCH



© 2024 chempedia.info