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State whether the following is true or false.
Hot isostatic pressing is generally more expensive than ordinary sintering.

  • A.False
  • B.True only at large scales
  • C.False only at small scales
  • D.True

Answer: D

Pressure vessels rated for high temperature and pressure are costly to buy and to run, and the cycle is slow. It is used where the last remnant of porosity genuinely matters, as in cutting tools and some medical implants.

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