ISRO Mechanical & Aerospace 2025 - Question 66

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Topic: Manufacturing Processes

In metal diffusion bonding, which are the process variables?

  • A. Pressure and temperature
  • B. Pressure and Time
  • C. Pressure, temperature and time
  • D. Temperature and time

Answer: C. Pressure, temperature and time

Explanation: Diffusion bonding is a solid-state joining process that relies on the solid-state diffusion of atoms across the interface of the materials being joined. The primary process variables that govern this atom movement and interface coalescence are the applied Pressure, the elevated Temperature, and the holding Time.

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