The formation of Al4Si intermetallic phase was detected by XRD analysis due to the addition of Al as a sintering aid in an ultrahigh temperature ceramic composite. I want to know the melting temperature of such in-situ formed phase.
Dear Meysam Paar ,
Thank you for your answer. But as I mentioned in the question, I need the melting point of Al4Si which a chemical (intermetallic) compound, not an alloy. Moreover, it seems that such a material is not a thermodynamically stable phase that can be found in the binary phase diagram of Al-Si. Hence, I think its melting temperature is higher than the values you proposed.
Aluminium-silicon alloys form a eutectic at 11.7 wt% silicon, the eutectic temperature being 577 oC. This represents a typical composition for a casting alloy because it has the lowest possible melting temperature. Al-12Si wt% alloys are therefore common.
And other references about 600-700 difference by components weight
Dear Meysam Paar ,
Thank you for your answer. But as I mentioned in the question, I need the melting point of Al4Si which a chemical (intermetallic) compound, not an alloy. Moreover, it seems that such a material is not a thermodynamically stable phase that can be found in the binary phase diagram of Al-Si. Hence, I think its melting temperature is higher than the values you proposed.
Dear Dr. Aziz Babapoor ,
Would you please explain more?
It should be noted that Al4Si is not a stable phase.
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