Lead-Tin Phase Diagram

Paper Summary:

The experiment discussed in this paper aims to generate experimentally the lead-tin phase diagram from various proportions of the two metals in this binary system. It involves the preparation and heating in a test tube of mixtures containing 90%Pb-10%Sn, 80%Pb-20%Sn, 60%Pb-40%Sn, 40%Pb-60%Sn, and 20%Pb-80%Sn. The paper explains that the experiment requires the use of a thermocouple to monitor the temperature reading every 5 seconds until it drops off to 160 degrees C. Five cooling curves (temperature versus time), 1 for each mixture are generated, taking notes on the points of arrest and the critical temperatures. The paper shows that the integration of all the cooling curves produces the lead-tin phase diagram. The paper includes diagrams.

Paper Outline:
Abstract
Introduction
Experimental Section
Preparation of Set up and Samples
Experiment Proper
Results and Discussion
Conclusion
Recommendations
References
Appendix

From the Paper:

"The simplest phase diagrams are those of the binary alloys, a binary alloy being one that contains two components. In this type of phase diagram, temperature and composition are the variable parameters, the temperature usually being relegated to the y-axis and the composition to the x-axis (where the two composition scales of the two components run opposite to each other in magnitude, the 100% composition of each component coinciding with the 0% composition of the other component, and vice versa)."

Sample of Sources Used:

• Callister, W.D.Jr. Materials Science and Engineering: An Introduction. New York, John Wiley & Sons, Inc., 1997.

More papers on Lead-Tin Phase Diagram:

• Essay # 1971 : "Solid-Liquid Phase Diagram"
• Analytical Essay # 52966 : "The Steadfast Tin Soldier"
• Analytical Essay # 142260 : "Poverty and Gender in "The Tin Flute"

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