MAGNETIC MOUNTING SYSTEMS
FOR MUSEUMS AND CULTURAL INSTITUTIONS
Acknowledgements
Introduction
Disclaimer
CHAPTER 1:
EARLY HISTORY OF MAGNETS
Early Magnet Developments
A Silent Revolution
Units Of Measure
CHAPTER 2:
PERMANENT MAGNETS
Important Terms And Definitions:
Alnico Magnets (C. 1930)
Ferrite / Ceramic Magnets (Fe2O3) (1951)
Lanthanides Rare Earth Magnets
Manufacturing Methods
CHAPTER 3:
COMPONENTS OF A MAGNETIC SYSTEM FOR
USE IN CONSERVATION
Strength Of The Magnet
Receiving Component (The Ferromagnetic Material)
Magnetic Field Distance (The Gap)
CHAPTER 4:
TYPES OF MAGNETIC SYSTEMS
Types Of Magnetic Systems
Magnet-To-Magnet Attachment: A Two-Part System
Magnet-To-Ferromagnetic Material Attachment:
A Two-Part System
Magnet-To-Ferromagnetic Material Attachment: A Three-Part System
Continuous Large Area Pressure Magnetic System
CHAPTER 5:
A VOCABULARY FOR DESCRIBING MAGNETIC MOUNTING SYSTEMS
Recording A System Used
CHAPTER 6:
THE BEHAVIOR OF GAP MATERIALS
Topography Of The Materials
Friction
Static Charge
Adhesion And Cohesion
Using A Barrier Layer6
Compression
What Does This All Mean? – Practical Significance
CHAPTER 7:
PUTTING IT ALL TOGETHER, PRACTICAL ISSUES
Does The Magnetic System ‘Replace’ A Traditional Mounting
Magnets On The Surface And The Visitor’s Experience7
The Wide Variety Of Artifacts’ Needs
Attaching Auxiliary Material To An Artifact0
Designing An Overall Support Mount
Materials In Direct Contact With The Magnet
Installation And Deinstallation Of Artwork Using Magnets
Designing A Magnetic System For Multiple Uses And Components
CHAPTER 8:
USEFUL TOOLS WHEN WORKING WITH MAGNETS
Tools For Assessing Magnetic Properties
Tools For Fabricating Magnet Covers And Embedding Materials
Tools For Preparing Ferromagnetic Materials
Separating Strong Magnets From One Another
Magnetic Strength And Handling Strategies
Demagnetizing Or Degaussing Tools
CHAPTER 9:
TESTING A MAGNETIC SYSTEM
The Risks Of A Magnetic System
What Does It Mean For A Magnetic System To Fail?
Types Of Tests
Performing Your Test
CHAPTER 10:
CARING FOR YOUR MAGNETS
What Makes Magnets Fail
How To Store Magnets
Physical Safety
CHAPTER 11:
CONSIDERATIONS WHEN SHIPPING AND
TRAVELING WITH MAGNETS
Mailing Magnets Separately
Traveling Exhibition
CHAPTER 12:
THE SCIENCE BEHIND FERROMAGNETIC MATERIALS
The Hysteresis Loop
Remanence
Coercivity
Permeability
Susceptibility
CHAPTER 13:
THE EFFECT OF MAGNET’S ON COLLECTIONS
THAT ARE FERROMAGNETIC
What If The Artifact Is Ferromagnetic?
Mechanical Devices
Electronic Media
Contemporary Art
Crt Monitors And Recording Tape Head
CHAPTER 13:
MAGNETIZED DUST
Types Of Dust
Particulate Material
The Urban Environment – Metallic Dust And Its Sources
Mitigation
Summary
CHAPTER 15:
RARE EARTH MAGNETS AND THE GLOBAL ENVIRONMENT
World Production And Trade
Mining Of The Minerals
China’s Rise
Environment A nd Mining
New Technologies
Recycling
CHAPTER 16:
A VOCABULARY FOR DESCRIBING MAGNETIC MOUNTING SYSTEMS
The Future
APPENDIX: TEST TABLES
A. Gap Materials
B. Magnetic System Test Tables
APPENDIX C
IRON OXIDES AND THEIR PROPERTIES
Iron Oxides
Magnetite
Maghemite (γ-Fe2O3)
Hematite (α-Fe2O3) (Haematite)
Chrome Dioxide (CrO2)
Table D: Steel Gauge
CASE STUDIES
Glossary
Reference / Bibliography
Index