Discussion
Assertion (A): Debinding is the longest stage in ceramic injection moulding.
Reason (R): The large quantity of binder must be removed without disrupting the fragile compact.
Answer: A
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. Half the volume of the moulded part is binder, and once it begins to leave the part is held together by very little. It must therefore be removed slowly - days rather than hours - by solvent extraction, catalytic decomposition or careful thermal cycles, and debinding dominates the process time.
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