Electrical Contacts, 2nd Edition

7

Tribology of Electronic Connectors: Contact Sliding Wear, Fretting, and Lubrication

Roland S. Timsit

Adde parvum parvo magnus acervus erit (Add little to little and there will be a great heap)

– Ovid

CONTENTS

7.1      Introduction

7.2      Sliding Wear

7.2.1      Early Studies

7.2.2      Adhesion

7.2.2.1      “Wiping” Contaminant from Contact Surfaces

7.2.2.2      Mild and Severe

7.2.2.3      Prow Formation

7.2.2.4      Rider Wear

7.2.2.5      Gold Platings: Intrinsic Polymers and Junction Growth

7.2.2.6      Electroless Gold Plating

7.2.3      Abrasion

7.2.4      Brittle Fracture

7.2.5      Delamination and Subsurface Wear

7.2.6      Effect of Underplate and Substrate

7.2.6.1      Hardness

7.2.6.2      Roughness

7.2.7      Electrodeposited ...