Splat quenching

Further extensions of Madej ski s mod ell4011 may include (a) turbulence effect, (b) Rayleigh instability or Taylor instability and droplet breakup, (c) vibrational energy, and (d) influence of solidification on flow)514 Some issues related to the deformation and solidification of droplets on a flat substrate in splat quenching have been addressed in Refs. 380 and 514. To date, analytical models addressing droplet impingement on a semi-solid surface have not been found in available literature. 

Melt spinning Splat quenching Water quenching Glassy metallic alloy ribbon Fine-grained polycrystalUne bulk solids... 

Whittaker, A.G. Kintner, P.L. Carbon Analysis of spherules and splats formed from the liquid state and of the forms produced by quenching gas and solid. Carbon 1985, 23, 255-262. 

Mesoscopic stresses occur between particle splats inside a lamella and are responsible for reduced coating cohesion. These stresses result principally from frozen-in contraction of the rapidly quenched molten particles at the substrate interface. 

Figure 1. The schematic drawing of the apparatus for quenching in the splat method.

X-ray retifaction patterns for nyionl 1 obtained by the splat method and for the nyionl 1 after heating are shown in Figure 3. It )s clear that the quenched nyionl 1 is glassy, thermodynamically metaslable. and the heal-treat men a I 130 C for 1 hour makes it crysielllze. Figure 4 shows the results of the differential scanning... 

Figure 3. XRD patterns lor the nylonll quenched by the splat method before and after heat treatment al 130°C for 1h.

Figure 4. The DSC curves tor the nylon 11 quenched by the splat method.

---