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MTL 200 Chapters 12-17 Final exam review | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions CA$19.58   Add to cart
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MTL 200 Chapters 12-17 Final exam review | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
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MTL 200 Chapters 12-17 Final exam review | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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  • August 4, 2024
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MTL 200 Chapters 12-17 Final exam review | Questions & Answers (100 %Score) Latest
Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions



Ceramics - composed of two elements, more complex structures than metals



Ceramics bonding - purely ionic to totally covalent



Ion sizes and arrangment in ceramics - size of anion is much greater than the cation. anions want to
touch as many cations as possible (to be most stable)



Crystal structure influence - electrical charge of ion (must be 0, neutral) and relative sizes of anion and
cation (rc/ra is less than 1)



Coordinate number is based on - ratio of radii (rc/ra)



Most common coordination numbers in ceramics - 4,6,8



Coordination #12 - rc/ra > 1



Size of ion depends - coordination number increasing (radius increases with the number of the
neighbour the opposite charge), charge of ion (radius increases with the ions of number of e-)



AX ceramic - #cations = # anions



Rock salt structure - 4 atoms (similar to FCC), a = 2(rc+ra)



Cesium chloride - 1 formula unit, a = 2/sqrt3(rc+ra), anions at the corner and cation in the middle



Zinc blend structure - FCC structure, highly covalent, a = 2sqrt(2)(rc+ra)

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