solution1-1 - 106.4 g mol-1 . a1) Calculate the atomic...

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MATERIALS101 INTRODUCTION TO STRUCTURE AND PROPERTIES Winter 2010 Problem Set 1 Due: January 19, 8:00 AM 1. Bonding Why do ionically bonded materials have bonds with little directionality whereas covalent bonds can have high directionality? 2. Bonding i) Which of these objects are crystalline? And which is polycrystalline? ii) What are the constituents of each object above. iii) Rank the materials in terms of thermal expansion coefficient, from smallest to largest (hint: type ±coefficient of thermal expansion² into a web search engine) iv) Find the thermal expansion coefficient for iron or steel (steel is an alloy of Fe and C). Consider a Fe (steel) component with a linear dimension of 1 m. What is the length change on heating from room temperature to 525 °C.
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3. Density and Packing Pd (Palladium) has an FCC crystal structure, a density of 12.0 g cm -3 , and an atomic weight of
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Unformatted text preview: 106.4 g mol-1 . a1) Calculate the atomic radius of a Pd atom. b1) Calculate the unit cell dimension for Pd. W (Tungsten) has a BCC crystal structure, a density of 19.3 g cm-3 , and an atomic weight of 183.85 g mol-1 . a2) Calculate the atomic radius of a W atom. b2) Calculate the unit cell dimension for W. 4. Crystal Directions and Planes Callister (7 th Edition) Problem 3.24. 5. Crystal Directions and Planes (a) Index the a , b , g , and d vectors shown in the cubic cell below: (b) For a cubic lattice, draw the ) 200 ( and ) 1 1 1 ( ), 1 21 ( ), 112 ( planes. (c) Sketch a close-packed plane for BCC and FCC crystal structures and show the close packed direction. Write a specific close packed direction for a specific close-packed plane for BCC and FCC. Write the full set of close-packed planes and close packed directions for BCC and FCC. Closed packed directions...
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solution1-1 - 106.4 g mol-1 . a1) Calculate the atomic...

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