Chapter 15

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Which of the following design features would be difficult or impossible to achieve by conventional pressing and sintering (three best answers)

outside rounded corners, side holes, threaded holes

Impregnation refers to which of the following (two best answers)

putting polymers into the pores of a PM part, soaking oil by capillary action into the pores of a PM part

In cold isostatic pressing, the mold is most typically made of which one of the following

rubber

Which of the following most closely typifies the sintering temperatures in PM

0.8 Tm

As particle size increases, interparticle friction

decreases

Which of the following processes combines pressing and sintering of the metal powders (three best answers)

hot isostatic pressing, hot pressing, spark sintering

For a given weight of metallic powders, the total surface area of the powders is increased by which of the following (two best answers)

smaller particle size, higher shape factor


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