Phase diagram lead-antimony

The lead-antimony system has the simple eutectic type of phase diagram (Fig. 15.7). The regions are labeled L signifies liquid, Sb or Pb signifies pure solid antimony or pure solid... 

Ecjuilibrium Phase Diagram and Microstructure of the Lead—Antimony Alloy System... 

In the liquid state (melt) antimony is fully soluble in lead. On cooling the melt, formation of an a-Pb solid—solution starts whose composition depends on temperature and Sb content in the melt. Figure 4.3 presents the equilibrium phase diagram of the Pb—Sb system [13]. It reflects the thermodynamic state of the system when the phases are in equilibrium. 

Per] Perbix, G., On Thermodynamics and Technology of Removing of Copper, Tin and Antimony from Iron and Lead (in German), Thesis, Aachen, 1-145 (1959) (Phase Diagram, Experimental, Morphology, Themodyn., 163)... 

The problem occuring in zinc antimony materials is due to difficulties in the crystal growth of materials. Having initially a high figure of mait, those T.E. materials could have better properties with some achievement in the metallu cal processes (15). These difficulties are easily understood by a complicated phase diagram. Up to our recent paper (16) die Afferent phase equilibria determinations lead to six different ersions of this phase diagram. These differences were due to real difficulties in the phase stabilities and consequenUy to the phase equilibria determination. 

Examples of lead-antimony and lead-calcium alloys show the phase diagrams in Figures 9.4 and 9.5. In practice the influences are substantially more complex, because of additional alloy compounds beyond binary alloys. 

Figure 9.4 Phase diagram of a lead antimony alloy.

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