## Treatise on Materials Science and Technology, Volume 4 |

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Page 182

...

case is impossible at any finite temperature . Let us also introduce the symbol x to

denote a departure from

...

**stoichiometric**composition and show from thermodynamic reasoning that thiscase is impossible at any finite temperature . Let us also introduce the symbol x to

denote a departure from

**stoichiometry**on the B - rich side such that X = XB – 0 .Page 196

Accordingly , S varies from 1 for perfect order to 0 for complete randomness in

contrast to the disorder parameter z which increases from 0 to 0 . 25 in the case

of a

Accordingly , S varies from 1 for perfect order to 0 for complete randomness in

contrast to the disorder parameter z which increases from 0 to 0 . 25 in the case

of a

**stoichiometric**alloy . Making the appropriate substitutions for An , Aa , and ...Page 198

From Eqs . ( 55 ) , ( 56a ) , and ( 56b ) we have Vab = - 2RT / [ ZN ( 1 – 4x2 ) ] ( 57

) At

increasing deviation from the

From Eqs . ( 55 ) , ( 56a ) , and ( 56b ) we have Vab = - 2RT / [ ZN ( 1 – 4x2 ) ] ( 57

) At

**stoichiometry**, x = 0 . ... that the critical transition temperature decreases withincreasing deviation from the

**stoichiometric**composition as is to be expected .### What people are saying - Write a review

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### Contents

RICHARD W VOOK | 2 |

Epitaxial Monocrystalline Films | 10 |

Polycrystalline Films | 37 |

Copyright | |

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### Common terms and phrases

activity addition alloys applied approximation average beam becomes calculated compaction component composition compression concentration considered constant copper correlation corresponding crystal cubic curve decreases defined deformation density dependence determined diffraction diffusion direction discussed dislocation disorder distribution effect electron elements energy enthalpy entropy equations example experimental expression factor fault field Figure forged function given gives increases influence interaction jump lattice material measurements mechanism metal method neighbor observed obtained occurs oriented parameter partial pattern phases Phys plane polycrystalline position possible powder present probability production properties random ratio reflections region relative respectively shown in Fig shows single crystals sintered solid solution solute atoms solvent strain strengthening stress structure Substituting surface Table temperature theoretical theory thermodynamic thin films tracer twin vacancy values variations volume X-ray yield