- 1 A Describe The Two Main Uses Of Phase Diagrams 2 Marks B Sketch The Lead Tin Phase Diagram And Label And Define 1 (65.15 KiB) Viewed 21 times
1. (a) Describe the two main uses of phase diagrams [2 marks] (b) Sketch the Lead-Tin phase diagram and label and define
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1. (a) Describe the two main uses of phase diagrams [2 marks] (b) Sketch the Lead-Tin phase diagram and label and define
1. (a) Describe the two main uses of phase diagrams [2 marks] (b) Sketch the Lead-Tin phase diagram and label and define the ‘liquidus', 'solidus' and 'eutectic'. Determine the percentage of tin in the alloy when the specimen is at 250°C with 30% liquid and remainder being at solid phase. [14 marks] (c) Explain how the Lead-Tin phase diagram can be used to identify alloy compositions having the best properties for use as a solder in electronics. [4 marks] Total marks: 20
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