Tribochemistry

Gerhard Heinicke

• Publisher: De Gruyter
• Year: 1984
• eBook ISBN: 9783112765418
• Edition: 0
• Topic: Technology & Engineering
• Subtopic: Physical & Theoretical Chemistry
• Index: Technology & Engineering

No detailed description available for "Tribochemistry".

Table of contents

• Table of contents
• 1. Preface
• 2. Introduction
• 3.1. Transmission of mechanical energy to solids
• 3.1.1. Tribomechanics
• 3.1.2. Effects of different triboreactors
• 3.2. Changes of the solid structure by mechanical treatment
• 3.2.1. Principle of imperfection classification
• 3.2.2. Zero-dimensional imperfection
• 3.2.3. One-dimensional imperfection
• 3.2.4. Two-dimensional imperfection
• 3.2.5. Three-dimensional defect
• 3.2.6. Primary crystallite size and lattice distortions
• 3.2.8. The influence of the structural imperfections on the solid reactivity
• 3.2.9. Methods for the measurement of imperfections
• 3.3. Physical elementary processes in the mechanical activation of solids
• 3.3.1. Introduction and formulation of the problem
• 3.3.2. Mechanical activation
• 3.3.3. Occurrence of high temperatures
• 3.3.4. Tribo-induced luminescence
• 3.3.5. Tribo-induced electron emission
• 3.3.6. Electric charging processes
• 3.3.7. The release of lattice components
• 3.3.8. Summary
• 4. Kinetics and thermodynamics of tribochemical reactions
• 4.1. Tribochemical excitation model
• 4.2. Experimental arrangement for kinetic and thermodynamic measurements
• 4.3. General course of triboehemical reactions
• 4.4. The influence of the treatment intensity on tribochemical reactions
• 4.4.1. Relationships between reaction velocity and intensity of the treatment
• 4.4.2. On the efficiency of tribochemical reactions
• 4.5. The dependence of tribochemical reactions on temperature
• 4.6. The pressure-dependence of tribochemical reactions
• 4.7. Kinetics of the tribosorption
• 4.7.1. The detection of the triboabsorption
• 4.7.2. Kinetics of the triboabsorption
• 4.7.3. Factors influencing the tribosorption
• 4.7.4. Penetration profile of triboabsorbed gases
• 4.7.5. Desorption of the tribosorbate
• 4.7.6. Relations between triboabsorption and triboreaction
• 4.7.7. Tribokinetic model
• 4.8. The thermodynamics of tribochemical reactions
• 4.8.1. Thermodynamic characterization of mechanically disturbed solids
• 4.8.2. Application of irreversible thermodynamics to tribochemical processes
• 4.8.3. Tribochemical equilibrium
• 4.9. Tribochemical modification transformation
• 5. On the causes of reactions in tribochemistry
• 5.1. Chemical effects of triboplasma
• 5.2. The role of elastic stresses in tribochemical reactions
• 5.2.1. Tribochemical reactions influenced by constant stresses
• 5.2.2. Tribochemical reactions influenced by altering mechanical stresses
• 5.3. The role ot temperature in tribochemical processes
• 5.4. Chemical effects of triboelectric processes
• 5.4.1. On supercharging disperse substances in milling equipment
• 5.4.2. ' The influence of tribo-induced electrostatic charges on chemical processes
• 5.4.3. The release of chemical reactions by tribo-induced discharges
• 5.4.4. The release of chemical reactions by fast electrons
• 5.5. The dependence of tribochemical reactions on the surface area
• 5.5.1. The importance of the surface area for the solid reactivity
• 5.5.2. Several kinds of solid surfaces
• 5.5.3. Change in primary crystallite sizes by mechanical treatment and its importance for the solid reactivity
• 5.5.4. Change in the inner and outer surface through mechanical stress
• 5.5.5. The importance of the outer and inner surfaces for solid reactivity
• 5.6. Fresh surface and transport effects as factors accelerating tribochemical reactions
• 5.6.1. Sorption and reaction of gases on mechanically developed fresh surfaces
• 5.6.2. The sorption of gaseous mixtures to mechanically developed fresh surfaces
• 5.6.3. Tribomechanically induced displacement sorption
• 5.6.4. Fresh surface, reactions in liquid phase
• 5.6.5. Fresh surface reactions caused by the transport effect between solid phases
• 5.7. The tribodiffusion mechanism of gases
• 5.8. The influence of top layers on tribochemical reactions (top-layer effect)
• 5.9. The effect of tribomechanically caused structural changes on the solid reactivity
• 5.9.1. The influence of crystal imperfections on the solid reactivity
• 5.9.2. Correlations between individual structural imperfections and reactivity of solids
• 6.1. Tribochemical reactions in solids with different bond character
• 6.1.1. Tribochemistry of silicon carbide
• 6.1.2. Tribochemistry of quartz
• 6.1.3. Tribochemistry of apatites
• 6.2. Tribocatalysis
• 6.2.1. Catalysts by means of tribochemical reactions
• 6.2.2. The influence oftribomechanical treatment on the catalytically active surface area
• 6.2.3. The relation between disorder and catalytic activity of tribomechanically stressed catalysts
• 6.2.4. Changes in catalytic activity by tribomechanically effected secondary structural changes
• 6.2.5. Summary
• 6.3. Tribochemistry of polymers
• 6.3.1. Introduction
• 6.3.2. Kinds of mechanical influences on polymers
• 6.3.3. Changes in polymer structure and texture by the action of mechanical energy
• 6.3.4. Mechanism of tribochemical degradation
• 6.3.5. Modification reactions at tribochemical dégradation
• 6.4. Triboanalysis
• 6.5. Tribochemical reactions for preparation purposes
• 6.6. Tribochemistry of solid state electrode
• 6.6.1. Introduction
• 6.6.2. Thermodynamics
• 6.6.3. Kinetics
• 6.6.4. Tribochemistry of solid state electrodes in engineering Metals as important construction materials are frequently exposed
• 6.6.5. Final remarks
• 7. Application of tribochemistry in technology
• 7.1. Introduction
• 7.2. Tribochemical processes in the material-changing industry
• 7.2.1. Process engineering aspects in tribochemical processes
• 7.2.2. The importance of tribochemistry in the chemical and metallurgical industries
• 7.2.3. Tribochemistry of building materials
• 7.3. The ignition of metal fires by tribochemical reactions
• 7.3.1. Metal fires in engineering
• 7.3.2. The mechanism of metal fires
• 7.3.3. Reasons for the ignition of metal fires
• 7.3.4. Tribochemical fire ignition
• 7.3.5. Conclusions on the prevention of metal fires
• 7.4. The importance of tribochemical reactions in friction, lubrication, and wearing processes
• 7.4.1. The technical importance of friction, lubrication, and wear
• 7.4.2. Tribochemistry as a subsection of tribology
• 7.4.3. The tribochemical dissipation model
• 7.4.4. The effect of tribochemical reactions on friction and wearing processes
• 7.4.5. The effect of tribochemical reactions on energy exchange processes
• 7.5. Final remarks
• 8. Tribochemical reactions by geomechanical processes
• 8.1. Geomechanics
• 8.2. The role of tribochemical reactions in the origin of life on earth
• 8.3. The importance of tribochemical reactions in the development of deposits
• Acknowledgements
• Subject Index