Elsevier S & T

Molybdenum Disulphide Lubrication

Lansdown, A.R.

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Table of contents
  • PageCover
  • Contentsxi
  • Prefacevii
  • List of Figuresxv
  • List of Tablesxxi
  • Chapter 1. History1
  • 1.1 Early Beginnings1
  • 1.2 Recorded History3
  • 1.3 Range of Applications7
  • Chapter 2. Occurrence and Extraction11
  • 2.1 Occurrence11
  • 2.2 Extraction of Molybdenum Disulphide13
  • 2.3 Extraction of Molybdenum17
  • 2.4 Synthesis of Molybdenum Disulphide19
  • Chapter 3. Molybdenum and its Compounds21
  • 3.1 Molybdenum21
  • 3.2 Oxides of Molybdenum24
  • 3.3 Sulphides of Molybdenum26
  • 3.4 Other Compounds of Molybdenum27
  • 3.5 Molybdenum Compounds in Lubrication28
  • 3.6 Chemical Uses of Molybdenum29
  • Chapter 4. Properties of Molybdenum Disulphide31
  • 4.1 Physical Properties31
  • 4.2 Intercalation Compounds34
  • 4.3 Electrical Properties35
  • 4.4 Chemical Properties38
  • 4.5 Effects of Temperature39
  • 4.6 Oxidation40
  • 4.7 Effect of Moisture43
  • Chapter 5. Mechanism of Lubrication47
  • 5.1 Fundamentals of Friction47
  • 5.2 Friction of Molybdenum Disulphide50
  • 5.3 Effect of Contact Load on Friction51
  • 5.4 Effects of Vapours and Other Contaminants56
  • 5.5 Load-Carrying Capacity58
  • 5.6 Summary58
  • Chapter 6. Formation of Molybdenum Disulphide Films61
  • 6.1 Film Formation61
  • 6.2 Burnished Films from Powder62
  • 6.3 Burnishing of Soft Films66
  • 6.4 Film Formation by Transfer69
  • 6.5 Stucture of Burnished or Run-in Films69
  • 6.6 Effects of the Substrate on Film Formation72
  • 6.7 Effects of the Moisture and Other Vapours on Film Formation77
  • Chapter 7. Properties of Molybdenum and Disulphide Films79
  • 7.1 Friction79
  • 7.2 Effects of Moisture and Other Vapours81
  • 7.3 Effects of Temperature85
  • 7.4 Effects of Radiation88
  • 7.5 Effects of Vacuum89
  • 7.6 Effects of Particle Size and Shape90
  • 7.7 Effect of Film Thickness92
  • 7.8 Effects of Sliding Speed97
  • 7.9 Film Life and Mechanism of Failure99
  • 7.10 Effects of Additives104
  • Chapter 8. Transfer in Lubrication107
  • 8.1 General Phenomenon of Transfer107
  • 8.2 Transfer of Molybdenum Disulphide108
  • 8.3 Applications of Transfer115
  • 8.4 Composition of the Transfer Source117
  • 8.5 Nature and Location of the Transfer Source120
  • Chapter 9. Lubrication by Molybdenum Disulphide Alone129
  • 9.1 Different Techniques of Use129
  • 9.2 Use in Free Powder Form131
  • 9.3 Dispersions134
  • 9.4 Compacts136
  • 9.5 In-Situ Formation138
  • 9.6 Burnished Films148
  • Chapter 10. Sputtering and Other Physical Deposition Processes153
  • 10.1 The Sputtering Process153
  • 10.2 Effects of Sputtering Variables on Film Stucture156
  • 10.3 Effect of substrate161
  • 10.4 Structure of the Sputtered Coating163
  • 10.5 Performance of Sputtered Coatings168
  • 10.6 Effects of Co-Sputtering171
  • 10.7 Effects of Ion Bombardment174
  • 10.8 Pulsed Laser Deposition176
  • Chapter 11. Bonded Films179
  • 11.1 Types of Bonded Film179
  • 11.2 Other Components of Bonded Films186
  • 11.3 Substrate Preparation and Pre-Treatment187
  • 11.4 Application of the Bonded Film192
  • 11.5 Curing of Film195
  • 11.6 Plasma Spraying195
  • 11.7 Friction and Wear Properties of Bonded Films196
  • 11.8 Repair and Renewal of Films204
  • Chapter 12. Composites207
  • 12.1 Lubricating Composites207
  • 12.2 Polymer Composites208
  • 12.3 Metallic Composites226
  • 12.4 Ceramic and Inorganic Composites233
  • 12.5 Transfer Lubrication of Rolling Brearings235
  • 12.6 Electrical Brushes and Sliprings239
  • Chapter 13. Use in Oils and Greases245
  • 13.1 Interaction Between Molybdenum Disulphide and Liquids245
  • 13.2 Use in Lubricating Oils255
  • 13.3 Molybdenum Disulphide in Greases265
  • 13.4 Pastes and Dispersions275
  • Chapter 14. Other Lamellar Solid Lubricants283
  • 14.1 Occurrence and Properties283
  • 14.2 Intercalation284
  • 14.3 Graphite287
  • 14.4 Graphite Fluoride291
  • 14.5 Transition Metal Dichalcogenides294
  • Chapter 15. Corrosion and Fretting305
  • 15.1 Background305
  • 15.2 The Chemical Environment307
  • 15.3 Corrosion Protection308
  • 15.4 Fretting310
  • Chapter 16. Selection and Use313
  • 16.1 Selecting the Class of Lubricant313
  • 16.2 Selecting the Type of Solid Lubricant319
  • 16.3 Use of Molybdenum Disulphide321
  • References329
  • Subject Index365
Book details
  • Vendor Elsevier S & T
  • SKU 9780444500328
  • ISBN-13 9780080536927
  • Author Lansdown, A.R.
  • Category Technology & Engineering
  • Subject Machinery

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In the 1970s and the early 1980s there was an enormous volume of research and development into the subject of molybdenum disulphide lubrication, much of which was supported by national governments for the benefit of defence, aviation or space activities. There were already some well-established practical guidelines for deciding when and how to use molybdenum disulphide, but there was still a considerable lack of universally-accepted theoretical understanding of some of the important and fundamental aspects of molybdenum disulphide technology. However, the state of knowledge was growing rapidly.

In the past fifteen years the situation with regard to the technology of molybdenum disulphide lubrication has stabilised in many respects, and a measure of consensus has been reached about some of the mechanisms involved. The use of molybdenum disulphide has become routine in some industries, and there are many well-established and reputable commercial products available. Except in the high-technology field of physical deposition techniques, especially sputtering, the output of new research publications has fallen from perhaps two hundred a year in the 1970s to fewer than ten a year in the 1990s. In spite of this maturing of the subject, it is clear that there are still many aspects in which disagreements persist about the mechanisms involved, and which as a result are unclear or misunderstood among current, and perhaps even more importantly, potential users.
One of the primary objectives of this book is to analyse the various aspects of molybdenum disulphide lubrication technology about which there are still disagreements or controversy, and to attempt to come to firm conclusions about some of the mechanisms involved. In particular, it will place emphasis on the importance and effects of burnishing and film consolidation.