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Unformatted text preview: 1 mm is to be be made from spherical powder particles each with a diameter of 10 m. Estimate the volume fraction of porosity in the powder ball-bearing specimen prior to any compaction and sintering. State any assumptions. Then, assuming a fully dense piece after compaction and sintering, calculate the percent shrinkage experienced along the ball bearing diameter assuming isotropic shrinkage. Briefy list some advantages and disadvantages for using a ceramic ball bearing in place of a metal ball bearing. Problem 4.6 glass transition temperature Problem 4.8 glass viscosity Problem 4.13 Silicon/silica band gap....
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- Spring '09