Does Alloying Element B Increase the Melting Point of Element A?

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Discussion Overview

The discussion revolves around the effects of alloying element B with element A on the melting point of the resulting alloy. Participants explore theoretical implications, particularly focusing on the solubility of the elements in different states and the behavior of the alloy upon cooling. The context includes aspects of materials science and phase diagrams.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants question whether alloying a small amount of B with A will increase the melting point of A, given that A and B are completely soluble in the liquid state but completely insoluble in the solid state.
  • There is a request for clarification on what happens to the alloy constituents upon cooling, indicating a focus on the phase behavior of the alloy.
  • One participant notes that the question is part of a homework assignment and mentions the lack of additional data provided.
  • A separate inquiry is made about the concept of a maximum melting eutectic and why the melting point at the eutectic point is always at a minimum, suggesting a potential exploration of thermodynamic principles.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the melting point will increase with the addition of B, and multiple viewpoints regarding the behavior of the alloy and eutectic concepts are presented.

Contextual Notes

The discussion is limited by the absence of specific data regarding the properties of elements A and B, as well as the lack of detailed thermodynamic analysis related to the eutectic point.

cruz_johann
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A and B are completely soluble in the liquid state but completely insoluble in the solid state. Will A, alloyed with a small amount of B, have a higher melting point than pure A? Explain.
 
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cruz_johann said:
A and B are completely soluble in the liquid state but completely insoluble in the solid state. Will A, alloyed with a small amount of B, have a higher melting point than pure A? Explain.
What would happen to the alloy constituents (elements) upon cooling? Note - the problem states "small amount of B" in A.
 
Its a homework question given to us. No more data is provided...
 
Is there such thing as maximum melting eutectic? Why is the melting point of the eutectic point always minimum? Is that because its not thermodynamically feasible?
 

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