For solid stste reaction, the starting powders should be heated to its melting point to react?

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S. Gunabalan

solid state reaction - So definitely not more than the melting point

you have to refer powder metallurgy process

consists of 3 steps:

1. powder blending (pulverisation) - at room temperature,

2. die compaction - at room temperature,

3. Sintering - is a solid state reaction under a high heat for a long period of time - below melting point - that depends on reaction temperature of the composition