Vitrification quench cooling

Figures 10 and 11 show two extreme morphologies developed for PP/EPR by the isothermal unmixing at Tx and the subsequent diffusion-limited crystallization (14). The morphology shown in Fig. 10 was developed by unmixing at 200 C for 5 min. and subsequent crystallization at 125 C for 5 min., followed by an eventual rapid cooling below the vitrification temperature of the mixture. On the other hand the morphology shown in Fig. 11 was developed by unmixing at 200 C for 20 min. and subsequent crystallization by quenching the mixture in an ice-water bath.

Massive amorphous alloys of Feg3 Co ZrjgMo5W2Bj5 composition are produced by suction arc melted alloys to a water-cooled copper form (form of rods or tubes) or one-way rapid quenching on spinning copper dmm (tape). With increase of Co content in the alloy composition the improve of alloy vitrification ability is observed. Another consequence of greater cobalt percentage content is the temperature Curie increase of amorphous materials [2]. However, the disadvantage results from the cobalt content increase is lower corrosion resistance in sulphate environments [2]. 

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