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1、STDmJIS H Bb80-3-ENGL 1998 = 4933608 05b50b5 b85 J IS JAPANESE I NDUSTR IAL STANDARD Translated and Published by Japanese Standards Association Test methods for thickness of anodic oxide coatings on aluminium and aluminium alloys- Part 3 : Non-destructive measurement by split-beam microscope ICs 25.
2、220.20 Descriptors : aluminium, aluminium alloys, anodizing, anodic coating, thickness Reference number : JIS H 8680-3 : 1998 (E) measurement, microscopic analysis 4 s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie
3、Not for Resale, 03/10/2007 07:34:23 MSTNo reproduction or networking permitted without license from IHS -,-,- H 8680-3 : 1998 Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of International Trade and Industry through deliberatio
4、ns at the Japanese Industrial Standards Commit- tee in accordance with the Industrial Standardization Law. Thereby, JIS H 8680 : 1993 was withdrawn, and the non-destructive measure- ment by split-beam microscope in the withdrawn standard is replaced by this part 3. In this establishment, in order to
5、 help comparison of JIS with ISO, preparation of JIS conforming to IS0 and proposal for a draft of Inter- national Standard based on JIS, among four kinds of measuring meth- ods which have been specified in the former JIS H 8680 (i) Microscopical method, (2) Eddy current method and (3) Non-destructi
6、ve measurement by split-beam microscope are established as the respective standards of JIS H 8680-1, JIS H 8680-2, JIS H 8680-3, and (4) Determination of mass per unit area of anodic oxide coatings is separated from the series and established as JIS H 8688. Date of Establishment: 1998-11-20 Date of
7、Public Notice in Official Gazette: 1998-11-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Non-Ferrous Metals JIS H 8680-3:1998, First English edition published in 2000-08 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo,
8、 107-8440 JAPAN In the event o f any doubts arising as to the contents, the original JIS is to be the final authority. 4 . . O JSA 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, in
9、cluding photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 07:34:23 MSTNo reproduction or network
10、ing permitted without license from IHS -,-,- L STD-JIS H 8bAO-3-ENGL 1938 = 4733608 05b5067 Y58 JAPANESE INDUSTRIAL STANDARD JIS H 8680-3 : 1998 Test methods for thickness of anodic oxide coatings on aluminium and aluminium alloys- Part 3 : Non-destructive measurement by split-beam microscope Introd
11、uction This Japanese Industrial Standard has been prepared based on IS0 2128, Anodizing of aluminium and its alloys-Determination of thickness of anodic oxide coatings-Non-destructive measurement by split-beam microscope issued in 1976 without changing technical contents. This Standard specifying th
12、e test method re- lated to the coating thickness of anodic oxide coating applied on aluminium and alu- minium alloys comprises three parts of the microscopical method, the eddy current method, and the non-destructive measurement by split-beam microscope, and its ap- plication shall be subjected to t
13、he agreement according to the shape of a product, the kind of a coating, the coating thickness, etc. between the supplier and the purchaser. 1 Scope This Standard specifies the coating thickness test method by the non- destructive measurement by split-beam microscope for anodic oxide coatings (here-
14、 after referred to as “coatings”) applied on the products of aluminium and aluminium alloys (hereafter referred to as “products”). Remarks : The International Standard corresponding to this Standard is as fol- lows. IS0 2128 : 1976 Anodizing of aluminium and its alloys-Determina- tion of thickness o
15、f anodic oxide coatings-Non-de- structive measurement by split-beam microscope 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. If the indication of the year of publication is given to these referred
16、standards, only the edition of indicated year constitutes the provision of this Standard but the revision and amend- ment made thereafter are not applied. The normative references without the indi- cation of publication apply limiting only to the most recent edition. JIS H 0201 : 1998 Glossary of te
17、rms used in the surface treatment of aluminium JIS H 8601 : 1992 Anodic oxide coatings on aluminium and aluminium alloys JIS Z 8401 : 1961 Rules for rounding off of numerical values 3 Definitions H 0201 apply. 4 Summary This is the non-destructive measuring method that a beam is obliquely directed o
18、nto a test piece, the distance between the reflection beam from the coating surface and from the basis metal surface is measured, and the coating thickness is obtained from the relation to the refractive index of the coating. This method is applied to the transparent coating or the coating close to
19、trans- parent, and is not applied to the coating which is low in transparency of light. For the main terms used in this Standard, the definitions in JIS * Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resal
20、e, 03/10/2007 07:34:23 MSTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS H Bb80-3-ENGL 1998 4933608 05b50b8 394 m 2 H 8680-3 : 1998 5 Apparatus As given in Fig. 1, a beam (I) from a light source having passed through a straight line slit is directed onto a test surfac
21、e at 45“ incident angle, and the dis- tance between the reflectied beam (RI) from the coating surface and the reflected beam (R2) from the basis metal surface shall be read in 200 to 400 magnifications. Fig. 1 Optical path 6 Test piece The test piece shall be as follows. a) The sampling position of
22、a test piece shall be the significant surface of a prod- uct. Where the product can not be tested, the test piece made of the same material() and prepared under the same treating condition of the coating(2) as the product may be used. The standard dimensions of a test piece shall be 50 mm x 50 mm. T
23、he test sur- face of the test piece shall be flat. A test piece shall be previously cleaned by using a soft cloth dipped in a suit- able solvent(3) depending on the stain. b) c) 7 Operation The grade, temper grade, and the surface state before treatment of the material shall be the same as those of
24、the product. The pretreatment and the treatment of a coating shall be executed in the same bath and under the same condition as those for the product so that the same performance as that of the product can be obtained. The suitable solvent herein refers to acetone, ethanol, ethyl ether, methyl ethyl
25、 ketone, etc., and those which corrode a test piece or form a protective coating shall not be used. The operation shall be carried out in the following order. a) A test piece is attached to a test base so that the measuring surface is horizon- tal. b) The reflected beam (Rz) from the basis metal is
26、superimposed on the reference line by moving the dial of the micrometer, and the scale of the micrometer is read. c) The reflected beam (Ri) from the coating surface is superimposed on the refer- ence line by moving the dial of the micrometers and the scale of the micrometer is read. Copyright Japan
27、ese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 07:34:23 MSTNo reproduction or networking permitted without license from IHS -,-,- STDOJIS H BbBO-3-ENGL 1998 = 4933b08 05b50b9 220 3. H 8680-3 : 1998 d) Th
28、e operations of b) and c) are repeated at least five times changing the mea- suring positions. 8 Expression of test result Correct the average of the apparent coating thick- nesses which have been measured at least five times the difference between the read value of 7 b) and the read value of 7 c)l
29、by the refractive index of coating using result by the numerical value to the first decimal place. This numerical value cor- responds to the coating thickness at the measuring point specified in JI$ H 8601. I , the following formula, round off in accordance with JI$ Z 8401, and represent the e = e,/
30、- + 2.04e where, e : actual coating thickness (pm) e : average of apparent coating thickness (pm) n : refractive index of anodic oxide coating (generally, n = 1.59 to 1.62) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Be
31、rnie Not for Resale, 03/10/2007 07:34:23 MSTNo reproduction or networking permitted without license from IHS -,-,- STD=JIS H BbBO-3-ENGL 1998 4933b08 05b5070 T42 Errata for JIS (English edition) are printed in Stndadizatin Journal, published monthly by the Japanese Standards Association, and also pr
32、ovided to subscribers of JIS (English edition) in Monthly Information. Errata will be provided upon request, please contact: Standardization Promotion Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 07:34:23 MSTNo reproduction or networking permitted without license from IHS -,-,-