Electrical Contacts, 2nd Edition

1

Electrical Contact Resistance: Fundamental Principles

Roland S. Timsit

Only connect!

Howards End, E M Forster

CONTENTS

1.1      Introduction

1.2      Electrical Constriction Resistance

1.2.1      Circular a-spots

1.2.2      Non-Circular and Ring a-Spots

1.2.3      Multiple Contact Spots

1.2.4      Effect of the Shape of Contact Asperity on Constriction Resistance

1.3      Effect of Surface Films on Constriction and Contact Resistance

1.3.1      Electrically Conductive Layers on an Insulated Substrate

1.3.1.1      Calculation of Spreading Resistance in a Thin Film

1.3.2      Electrically Conducting Layers on a Conducting Substrate

1.3.2.1      Electrically Conducting Layers and Thin Contaminant Films

1.3.3      Growth of Intermetallic Layers ...