《JIS-H-8688-1998-R2004-ENG.pdf》由会员分享，可在线阅读，更多相关《JIS-H-8688-1998-R2004-ENG.pdf（7页珍藏版）》请在三一文库上搜索。
1、STDeJIS H BbBB-ENGL 1998 9 4933b08 05b82b0 b37 m J IS JAPANESE I NDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Test method for determination of mass per unit area of anodic oxide coatings on aluminium and aluminium alloys- Gravimetric method ICs 25.220.20 Descriptors
2、: aluminium, aluminium alloys, anodizing, anodic coating, thickness measurement, mass spectrometry, mass Reference number : JIS H 8688: 1998 (E) 4 s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/
3、10/2007 19:41:30 MSTNo reproduction or networking permitted without license from IHS -,-,- H 8688 : 1998 Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of International Trade and Industry through deliberations at Japanese Indust
4、rial Standards Committee in accordance with the Industrial Standardization Law. Consequently, JIS H 8680 : 1993 was withdrawn, and the gravimetric method, specified in the withdrawn JIS H 8680, has been replaced in JIS H 8688 : 1998. This establishment, for the purpose of making it easy to compare J
5、apanese Industrial Standards with International Standards, to prepare the Japanese Industrial Standard which conforms to International Standards, and to propose the original plan for International Standard on a basis of Japanese Industrial Standard, has adopted (i) microscopical method, (2) eddy cur
6、rent method, and (3) split-beam microscope, which were specified in JIS H 8680, as divisions to make them separately independent standards, and (4) gravimetric method has been prepared to have independent standard number in consideration of its content as standard property. Date of Establishment: 19
7、98-11-20 Date of Public Notice in Official Gazette: 1998-11-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Non-Ferrous Metals JIS H 8688 : 1998, First English edition published in 2000-12 Translated and published by: Japanese Standards Association 4-1-24, Akasaka,
8、Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. 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 mech
9、anical, including 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 19:41:30 MSTNo reproduction
10、or networking permitted without license from IHS -,-,- STD-JIS H 8bAA-ENGL 1998 Y933b08 05b82b2 40T m JAPANESE INDUSTRIAL STANDARD JIS H 8688 : 1998 Test method for determination of mass per unit area of anodic oxide coatings on aluminium and aluminium alloys- Gravimetric method Introduction This Ja
11、panese Industrial Standard has been prepared based on the first edition of IS0 2106 Anodizing of aluminium and its alloys-Determination of mass per unit area (surface density) of anodic oxide coatings-Gravimetric method, published in 1982, without any modification in the technical contents. 1 Scope
12、This Standard specifies the gravimetric method by which the mass per unit area (surface density) of anodic oxide coatings (hereafter referred to as “coatings“) on the products (hereafter referred to as “products“) manufactured of aluminium and alu- minium alloy is measured. This method can be applie
13、d to the almost all aluminium alloys except those in which the copper content is greater than 6 %. Remarks : The International Standard corresponding to this Standard is as fol- lows. IS0 2106 : 1982 Anodizing of aluminium and its alloys-Determina- tion of mass per unit area (surface density) of an-
14、 odic oxide coatings-Gravimetric method 2 Normative reference The following standard contains provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent edition of the standard indicated below shall be applied. JIS H 0201 Glossary of terms used in t
15、he surface treatment of aluminium 3 Definitions For the purpose of this Standard, the definitions in JIS H 0201 apply. 4 Summary Dissolve the coatings, weigh the mass difference between before and after dissolving, and express the amount of anodized coatings per unit area in mass. When the density o
16、f coating is known, the average thickness (pm) of coating obtained by its conversion is also obtainable. 5 Test specimen Test specimen shall be as follows. a) Sample out the test specimen from the significant surface of products. When no product can be submitted, the test specimen, which was prepare
17、d from the same material(9 as that of the product and under the same treating conditions(2) as those for the same coatings, may be used. The standard size of test specimen is 50 mm x 100 mm. Even if the standard dimensions cannot be taken out, it is recommendable to take out the test speci- men meas
18、uring 0.08 to 1.0 dm2 in surface area and 100 g or less in its mass. Additionally, when the surface of coating has nonsignificant surface which was covered with film, either remove it by mechanical or chemical measures in ad- vance, or perform coating it with film protective against acid. 4 b) Copyr
19、ight Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:41:30 MSTNo reproduction or networking permitted without license from IHS -,-,- STDmJIS H 8688-ENGL 3998 4933608 0568263 346 W 2 H 8688 : 1998
20、c) Test specimen shall be previously cleaned with soft cloth moistened with sol- vent(3) which is suitable to its dirt. Notes (1) The kind, temper grade, or surface condition before treatment of the material shall be the same as the product. (2) Pre-treatment and the treatment of coatings shall be c
21、arried out in the same bath and under the same condition as those of the product in order to achieve the same performance as that of the product. (3) The solvents here mentioned are acetone, ethanol, ethyl ether, me- thyl ethyl ketone, and so on, and they shall not corrode test speci- men and not co
22、ver it with protective film. 6 Test solution Test solutions shall be as follows. Phosphoric acid Density 1.7 g/cm3 (85 %): 35 ml Chromium trioxide anhydrous: 20 g Add deionized water(4) to make 1 O00 ml. Note (4) Use deionized water having 2 pS/cm or less conductivity. Remarks : This test solution c
23、an be used repeatedly, but its dissolving power diminishes with use. The 1 O00 ml of test solution in which about 12 g of coating was dissolved may give influence to the test value, therefore it is recommendable to renew it. 7 Test apparatus Test apparatus shall be as follows. a) Chemical balance Li
24、mit for reading 0.1 rng b) 1 litre beaker c) Heating device 8 Procedures Carry out the procedures in the following sequence. a) b) c) Measure the surface area of test specimen. Weigh the mass of the test specimen to the nearest 0.1 mg. Immerse the test specimen into the test solution beforehand heat
25、ed at 95 to 100 O C for 10 min. d) Draw out the test specimen, rinse it with water, dry it, and measure its mass to find its decreased weight. e) Repeat the procedures of c) and d) until the mass decrement of the test speci- men does not show more than a specified value. 9 Calculation Calculation sh
26、all be as follows. a) Mass of coating The mass of coating per unit area shall conform to the fol- lowing formula. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:41:30 MSTNo reproduction
27、 or networking permitted without license from IHS -,-,- STDOJIS H 8688-ENGL 1778 = 4933bDB 05b82b4 282 9 3 H 8688 : 1998 P A = mi:mz x1000 A where, PA : mass of coating per unit area (mg/dm2) ml : mass of test specimen before test (g) m2 : mass of test specimen after test (g) A : area of dissolved c
28、oating (dm2) b) Average thickness of coating(5) When apparent density of the coating is known, the average thickness of coating shall conform to the following formula. t = - m2 x 100 P X A where, t : average thickness of coating (pm) m l : mass of test specimen before test (g) m2 : mass of test spec
29、imen after test (g) p : apparent density of coating (g/cms) A : area of dissolved coating (dm2) Note (5) Because of inaccurate value of density, the value of average thickness is approximate. 10 Expression of results Test results shall be expressed with the coating mass obtained by the formula in 9
30、a) and/or the average thickness of coating obtained by the formula in 9 b ) . 11 Record The test report shall include the following information. a) Procedures adopted b) c) d) Results and the employed formulas Particulars specially recognized while measuring Operations not included in Standard and i
31、tems regarded as optional Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:41:30 MSTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS H b-ENGL 1798 m 4733608
32、05b82bC 119 = 5 005 4. H 8688 : 1998 J ?60 30 2.46 60 30 2.37 20 20 2.65 7075(*) 20 20 2.37 Annex (informative) Example for apparent density of anodic oxide coating by sulfuric acid on various aluminium or aluminium alloys 60 30 2 . 4 5 This Annex shows examples(?) of apparent density which are requ
33、ired when test results are expressed by the average thickness of coating, and is not a part of the Standard. Treatment conditions for anodic oxidation Electrolytic solution 150 g / Z HzS04, 20 O C Current density 1.3 Ndm2 60 30 2.06 1 099 1100 2 024 (*) 3 003 Time for electroly- sis (min) 20 60 20 6
34、0 20 60 20 60 I I, I I I Notes (1) Document quoted: The Aluminium Association ; ?Stan- dards for Anodically Coated Aluminium Alloys for Archi- tectural Applications (second edition)?, 12( 1965) (2) These are not applicable to temper grade ?O?. Copyright Japanese Standards Association Provided by IHS
35、 under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:41:30 MSTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS H BbBB-ENGL 1798 4733b08 05b82bb 055 Errata for JiS (English edition) are printed in Srandardization Journ
36、al, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly Information. Emta will be pvided upon request, please contact: Stanarization Promotion Department, Japanese Standards Association 4-1-24, Aicada, 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 19:41:30 MSTNo reproduction or networking permitted without license from IHS -,-,-