Water-quenching method

The thermal shock resistance ofunidirectionally reinforced SiC/RBSN composites was evaluated using the water quench method. Both room temperature flexural (Fig. 8) and tensile properties (Fig. 9) of 1-D SiC/RBSN composites were measured before and after quenching and compared with the flexural properties of quenched unreinforced RBSN under similar conditions. 

DIN 51068-1-1976. Testing of ceramic materials determination of resistance to thermal shock water quenching method for refractory bricks. 

Intbe present work, the thermal shock resistance of the ZrB -SiC-ZrC ceramic was investigated by the water quenching method, and the mierostrueture of the speeimen before and after water qnenching was observed. Furthermore, the temperature and thermal stress distribntions in the speeimen during instantaneous water quenehing were simulated and analyzed in detail by finite element analysis. 

NEW FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER (II) IN WATER... 

Fluorescence quenching methods wits ai omatic complexing reagents are often recommended for copper (II) determination in water. 

The pretreated metalwork to be coated is heated in an oven to a temperature of between 260 and 360°C, depending on the metal thicknesses and the coating to be applied. It is then withdrawn from the oven and dipped into the fluidised powder. Here the fine powder particles are blown onto the hot metal where they melt. After a few seconds (5-lOs is normal), the item is removed from the powder and the unfused outer particles are allowed to fuse. Then either the item is allowed to air cool or it is water quenched. The cooling method can affect crystal structure and hence surface finish and... 

As an example for the specific case of vanadium alloys with palladium, the trend of the average atomic volume of the alloys is shown in Fig. 4.20 and compared with the phase diagram. These data were obtained by Ellner (2004) who studied the solid solutions of several metals (Ti, V, Cr, Mn, Fe, Co and Ni) in palladium. The alloys were heat treated at 800°C and water-quenched. From the unit cell parameters measured by X-ray diffraction methods, the average atomic volume was obtained Vat = c 14 (see Table 4.3). These data together with those of the literature were reported in a graph, and the partial molar (atomic) value of the vanadium volume in Pd solid solution (Fv)... 

Absi, J., Glandus, J.C. (2004), Improved method for severe thermal shocks testing of ceramics by water quenching , J. Eur. Ceram. Soc., 24(9), 2835-2838. 

The blown film process involves extruding a relatively thick tube that is then expanded or blown by the usual internal air pressure or the water quench process to produce a relatively thin film (Figure 5.6). The tube can be collapsed to form double-layer layflat film or can be slit to make one or two single-layer film webs. The water quench process is the generally preferred method of producing blown PP type film. 

The structural dimension at a water/DCE interface is d — 2.48, while short-range structural information about the interface obtained by the fluorescence dynamic anisotropy experiments suggests that the interface is three-dimensional-like. Taking the results obtained by molecular dynamics simulations into account, these results can be understood only by the fact that the water/DCE interface is thin ( 1 nm), but is rough with respect to the spatial resolution of the excitation energy transfer quenching method ( 7 nm), as shown in Figure 12.7. 

This method proceeds as follows A suspension of 100 grams of cuprous bromide (CuBr) in anhydrous ether is treated with 670 ml of 1 molar phenyllithium. The CuBr becomes yellow and dissolves to give a brownish-red solution which then turns green. Phenylcopper precipitates as a white powder in 90% yield. The phenylcopper is then separated and reacted with a molar equivalent of allylbromide to give allylbenzene in 99% yield after water quenching and usual Grignard workup. 

Al-Zn-Mg-Cu alloys with additions of Fe, as well as with combinations of Fe, Mn, Zr and Sc, were produced by induction melting using ceramic crucibles and supplementary methods of melt purification, which included ceramic filters and blowing the melt with argon. Rods of 6 mm in diameter were manufactured by extrusion at 400 C with extrusion ratio A.=84. The T6 treatment consisted in water quenching from 465 °C and aging at 120 °C for 24 h. The alloy compositions and the properties of rods in the T6 condition are given in Table 1. 

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