1、 SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA)
4、Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org AMS 2451/11A AEROSPACE MATERIAL SPECIFICATION Issued OCT 2001 Revised JUL 2007 Superseding AMS 2451/11 Plating, Brush, Cobalt RATIONALE This specification was issued as part of the SAE Five Year Review process. 1. SCO
5、PE 1.1 Purpose This specification covers the requirements for brush plating of cobalt by electrodeposition. 1.2 Application This process has been used typically to improve corrosion and wear resistance of steel parts and to repair damaged, worn, or mismachined parts, but usage is not limited to such
6、 applications. This process is particularly useful for plating localized areas on-site, especially on large parts or assemblies, and for minimizing masking. 1.3 Safety - Hazardous Materials See AMS 2451. 2. APPLICABLE DOCUMENTS See AMS 2451. 3. TECHNICAL REQUIREMENTS See AMS 2451. 3.1 Properties 3.1
7、1 Hydrogen Embrittlement The plating process shall not cause hydrogen embrittlement in steel parts, determined in accordance with 4.2. 4. QUALITY ASSURANCE PROVISIONS See AMS 2451. 4.1 When specified by the cognizant engineering organization, the hydrogen embrittlement relief testing of 4.3 may be
8、waived. See 8.5. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS 2451/11A - 2 - 4.2 Hydrogen Embrittlement Test Test shall be in accordance with the requirements of ASTM F 519 using three Typ
9、e 1a.1 notched specimens stressed in tension under constant load, unless a different specimen is specified by the purchaser. For test purposes, the plating thickness shall be 0.0003 to 0.0006 inch (8 to 15 m) measured on the smooth section of the specimen, but with visual plating at the root of the
10、notch. 4.3 Periodic Tests Hydrogen embrittlement (4.2) is a periodic tests and shall be performed at least once each month that parts are processed. Tests of cleaning and plating solutions are periodic tests and shall be performed at a frequency established by the processor unless frequency of testi
11、ng is specified by the cognizant engineering organization. 5. PREPARATION FOR DELIVERY See AMS 2451. 6. ACKNOWLEDGMENT See AMS 2451. 7. REJECTIONS See AMS 2451. 8. NOTES See AMS 2451. PREPARED BY AMS COMMITTEE “B” Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
