_STP_1148-1992.pdf

STP 1148 Corrosion of Electronic and Magnetic Materials Phillip J.Peterson,editor ASTM Publication Code Number(PCN)04-011480-27 AsTM 1916 Race St.Philadelphia,PA Copyright by ASTM Intl(all rights reserved);Thu Dec 31 02:12:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Library of Congress Cataloging in Publication Data Corrosion of electronic and magnetic materials/Phillip J.Peterson.editor.p,cm.-(STP;1148)Contains papers presented at the symposium held in San Francisco.Calif.,May 22,1990,and sponsored by the ASTM Committee G-1 on Corrosion of Metals.ASTM publication code number(PCN)04-011480-27.Includes bibliographical references and index.ISBN 0-8031-1470-2 1.Electronics-Materials-Corrosion-Congresses.2.Magnetic materials-Corrosion-Congresses.I.Peterson,Phillip J.I1.ASTM Committee G-1 on Corrosion of Metals.TK7871.C67 1991 91-42686 621.381-dc20 CIP Copyright()1992 AMERICAN SOCIETY FOR TESTING AND MATERIALS,Phila-delphia,PA.All rights reserved.This material may not be reproduced or copied,in whole or in part,in any printed,mechanical,electronic,fim,or other distribution and storage media,without the written consent of the publisher.Photocopy Rights Authorization to photocopy items for internal or personal use,or the internal or personal use of specific clients,is granted by the AMERICAN SOCIETY FOR TEST-ING AND MATERIALS for users registered with the Copyright Clearance Center(CCC)Transactional Reporting Service,provided that the base fee of$2.50 per copy,plus$0.50 per page is paid directly to CCC,27 Congress St.,Salem,MA 01970;(508)744-3350.For those organizations that have been granted a photo-copy license by CCC,a separate system of payment has been arranged.The fee code for users of the Transactional Reporting Service is 0-8031-1470-2/92$2.50+.50.Peer Review Policy Each paper published in this volume was evaluated by three peer reviewers.The authors addressed all of the reviewers comments to the satisfaction of both the tech-nical editor(s)and the ASTM Committee on Publications.The quality of the papers in this publication reflects not only the obvious efforts of the authors and the technical editor(s),but also the work of these peer reviewers.The ASTM Committee on Publications acknowledges with appreciation their dedication and con-tribution to time and effort on behalf of ASTM.Printed in Phfladephia 1992 Copyright by ASTM Intl(all rights reserved);Thu Dec 31 02:12:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Foreword This publication,Corrosion of Electronic and Magnetic Materials,contains papers pre-sented at the symposium of the same name held in San Francisco,California on 22 May 1990.The symposium was sponsored by ASTM Committee G-1 on Corrosion of Metals.Phillip J.Peterson,IBM Corporation,San Jose,California,presided as symposium chairman.Copyright by ASTM Intl(all rights reserved);Thu Dec 31 02:12:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Contents Overview Corrosion-Resistant Outdoor Electronics-RUDOLF SCHUBERT,ANGELO VECA,AND ELIZABETH FISCHER Electrical Resistance of Wires Used as a Corrosion Rate Monitor-EDWARD S.SPROLES,JR.Formation of Copper Sulfide in Moist Air-Sulfur Dioxide-SANDEEP K.CHAWLA,BRETTON I.RICKETT,AND JOE H.PAYER The Effect of Conversion Coated and Plated Components on the Corrosion of Cobalt Alloy Magnetic Disks-KEITH GOODSON AND ROBERT CORMIA Accelerated Environmental Testing of Magnetic Recording Disks-JOHN SETCHELL The Effect of Temperature,Humidity,and Silicon Content on the Oxidation of Fine Iron Particles-ALLAN S.HADAD AND PATRICK P.PIZZO Corrosion Mechanism of Nd-Fe-B Magnets in Humid Environments-ANDREW s.KIM,FLOYD E.CAMP,AND STEVE CONSTANTINIDES Corrosion of Soft Magnetic,Controlled Expansion,and Glass Sealing Alloys-TERRY A.DEBOLD,MILLARD S.MASTELLER,AND THOMAS N.WERLEY The Influence of a Magnetic Field on Corrosion of Steel-sZE-SHING WALTER YEE AND S.A.BRADFORD Electrochemical and Structural Characterization of Permalloy-CUUEN H.LEE,DAVID A.STEVENSON LICHUNG C.LEE,RICHARD D.BUNCH,ROBERT G.WALMSLEY MARK D.JUANITAS,EDWARD MURDOCK AND JAMES E.OPFER vii 11 21 36 46 53 68 80 90 102 Copyright by ASTM Intl(all rights reserved);Thu Dec 31 02:12:14 EST 2015Downloaded/printed byUniversity of Washington(University of Washington)pursuant to License Agreement.No further reproductions authorized.Overview Modern civilization has an insatiable appetite for ever faster and improved communication plus a never-ending desire to store,retrieve,and manipulate information no matter where we are,whether in our offices,stuck in a traffic jam on the freeway,or sunning ourselves on the beach.This desire and appetite has driven the use of electronic and magnetic materials to dimensions th