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

### From inside the book

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Page 205

description of alloy phases requires the knowledge of either the

or entropy in addition to thermodynamic activity . Since the three quantities are

related ...

**PARTIAL**ENTHALPY AND ENTROPY To have a complete thermodynamicdescription of alloy phases requires the knowledge of either the

**partial**enthalpyor entropy in addition to thermodynamic activity . Since the three quantities are

related ...

Page 206

Instead of deriving an expression for the

enthalpy , we may take the difference between the enthalpy and activity terms .

Thus , ( S ; - $ 1,6 ) / R = ( H ; - H1,0 ) / RT – In ( a ; / 01,0 ) ( 86 ) The expressions

...

Instead of deriving an expression for the

**partial**entropy as is done for the**partial**enthalpy , we may take the difference between the enthalpy and activity terms .

Thus , ( S ; - $ 1,6 ) / R = ( H ; - H1,0 ) / RT – In ( a ; / 01,0 ) ( 86 ) The expressions

...

Page 210

3.0 ( H2 - H2,0 ) / RT , Q = 0.002 2.0 In 02 / 02,0 CC = 0.002

ENERGY , ENTHALPY AND ENTROPY ( H2 - H2,0 ) / RT , OC = 0.020 2 OC - (

52-520 ) / R , OC = 0.002 In Oz / Ozp , OC = 0.020 1.0 20C ( 52-520 ) / R , OC =

0.020 1 ...

3.0 ( H2 - H2,0 ) / RT , Q = 0.002 2.0 In 02 / 02,0 CC = 0.002

**PARTIAL**FREEENERGY , ENTHALPY AND ENTROPY ( H2 - H2,0 ) / RT , OC = 0.020 2 OC - (

52-520 ) / R , OC = 0.002 In Oz / Ozp , OC = 0.020 1.0 20C ( 52-520 ) / R , OC =

0.020 1 ...

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### Contents

RICHARD W VOOK | 2 |

Epitaxial Monocrystalline Films | 10 |

Polycrystalline Films | 37 |

Copyright | |

6 other sections not shown

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### Common terms and phrases

activity addition alloys applied approximation average beam becomes calculated compaction component composition compression concentration considered 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 specimen strain strengthening stress structure Substituting surface Table temperature theoretical theory thermodynamic thin films tracer twin vacancy values variations volume X-ray yield