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quiz8fall01

# quiz8fall01 - Answer any 4 Questions Name Quiz 8 ENSC...

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Name ENSC 3313,Fall 20m Quiz 8 gt Answer any 4 Questions only, 1 point each A memorable periodical article heading was "Ceramics are the material of the future. ..and always will be!" The inference is that advanced (structural) ceramics have both wonderfully attractive features and huge drawbacks. Tell 2 attractive characteristics and a liability! high temperature stability @ high melting points '"" low specific gravity high stiffness excellent for high temperature structural applications such as in engines. @ brittle!!!! ...so huge thermal shock and processing problems. Calculate the density of the FCC compound, LiF. The ionic radii are 0.068 and 0.!33 nm, respectively. Avagadro's number is 0.6022 x !024; the amu are 6.94 and !9.00 for Li and F, respectively. Express your answers as g/cm3 or Mg/m3. 2. FCC compound, hence 4 of each per cell and 2R + 2r = a Hence, D = --the 10-'-7 is (nm)3 to m3 D -W Mg/m3 Calculate the polydispersivity index (PDI) for the polymer of the following data.

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