1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 9211-4:2012 Optics and photonics Optical coatings Part 4: Specific test methodsBS ISO 9211-4:2012 BRITISH STANDARD National foreword This British Standard is the UK imp
2、lementation of ISO 9211-4:2012. It supersedes BS ISO 9211-4:2006 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CPW/172, Optics and Photonics. A list of organizations represented on this committee can be obtained on request to its secretary. This pub
3、lication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012 ISBN 978 0 580 71407 8 ICS 37.020 Compliance with a British Standard cannot confer immun
4、ity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012. Amendments issued since publication Date Text affectedBS ISO 9211-4:2012 ISO 2012 Optics and photonics Optical coatings Part 4: Specific test methods
5、Optique et photonique Traitements optiques Partie 4: Mthodes dessai spcifiques INTERNATIONAL STANDARD ISO 9211-4 Third edition Reference number ISO 9211-4:2012(E)BS ISO 9211-4:2012ISO 9211-4:2012(E) ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless oth
6、erwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyrig
7、ht office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 9211-4:2012ISO 9211-4:2012(E) ISO 2012 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 Terms and de
8、finitions . 1 4 Test conditioning 1 5 Abrasion resistance tests (conditioning method 01: abrasion) 1 5.1 General . 1 5.2 Test conditions 2 5.3 Degree of severity (conditioning method 01: abrasion) . 2 5.4 Recovery . 2 5.5 Evaluation 2 6 Adhesion tests (conditioning method 02: adhesion) . 3 6.1 Gener
9、al . 3 6.2 Test conditions 3 6.3 Degree of severity (conditioning method 02: adhesion) 3 6.4 Recovery . 3 6.5 Evaluation 3 7 Crosshatch test (conditioning method 03: crosshatch) . 4 7.1 General . 4 7.2 Test conditions 4 7.3 Conditioning 4 7.4 Recovery . 4 7.5 Evaluation 4 8 Solubility tests (conditi
10、oning method 04: solubility) 5 8.1 General . 5 8.2 Test conditions 5 8.3 Degree of severity (conditioning method 04: solubility) . 6 8.4 Recovery . 6 8.5 Evaluation 6 9 Environmental test code . 7 Annex A (normative) Materials for abrasion testing of optical coatings 8 Annex B (normative) Cheeseclot
11、h pad, pad cover and fixture preparation for moderate abrasion testing of optical coatings 11 Annex C (normative) Visual examination of optical coatings 13 Bibliography .14BS ISO 9211-4:2012ISO 9211-4:2012(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation
12、 of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.
13、International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance wit
14、h the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approv
15、al by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9211-4 was prepared by Technical Committ
16、ee ISO/TC 172, Optics and photonics, Subcommittee SC 3, Optical materials and components. This third edition cancels and replaces the second edition (ISO 9211-4:2006), which has been technically revised. ISO 9211 consists of the following parts, under the general title Optics and photonics Optical c
17、oatings: Part 1: Definitions Part 2: Optical properties Part 3: Environmental durability Part 4: Specific test methods iv ISO 2012 All rights reservedBS ISO 9211-4:2012INTERNATIONAL ST ANDARD ISO 9211-4:2012(E) Optics and photonics Optical coatings Part 4: Specific test methods 1 Scope ISO 9211 desc
18、ribes surface treatments of components and substrates, excluding ophthalmic optics (spectacles), by the application of optical coatings and gives a standard form for their specification. It defines the general characteristics and the test and measurement methods wherever necessary, but it is not int
19、ended to define the process method. This part of ISO 9211 describes specific test procedures for coating environmental durability tests that are identified in ISO 9211-3 but not described in other normative references. They are typically performed in sequence with other environmental durability test
20、s, as shown in ISO 9211-3:2008, Annex A. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the
21、 referenced document (including any amendments) applies. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD). ISO 9211-1, Optics and photonics Optical coatings Part 1: Definitions ISO 29862, Self adhesive tapes Determination of peel adhesion
22、properties 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 9211-1 apply. 4 Test conditioning Before and after subjecting a coated specimen (component or witness sample) to any inspection or test, the specimen shall be thoroughly cleaned as required t
23、o remove dirt, finger marks, smears, etc. Recommended storage time is at least 12 h after the coating process under ambient atmospheric conditions, or as specified between manufacturer and buyer. 5 Abrasion resistance tests (conditioning method 01: abrasion) 5.1 General The purpose of these tests is
24、 to evaluate to what extent the optical and mechanical properties of optical coatings on components and substrates are affected when subjected to specific abrading conditions at ambient atmospheric conditions. ISO 2012 All rights reserved 1BS ISO 9211-4:2012ISO 9211-4:2012(E) 5.2 Test conditions 5.2
25、.1 General Abrasion tests shall be conducted using a coating abrasion tester capable of meeting the requirements of 5.2 and 5.3. The length of stroke of the tester shall be approximately 20 mm when the dimensions of the specimen permit. A stroke is defined as one pass in one direction on the surface
26、 being tested. The tester shall be operated in a cycling mode. A cycle is defined as one stroke in one direction, followed by a return stroke in the opposite direction. The cycle speed shall be in the range of 30 to 90 cycles per minute. The head of the tester shall be approximately normal to the su
27、rface under test during the rubbing operation. The specimen shall be firmly held so that it does not slide during the test. 5.2.2 Moderate abrasion test The rubbing head of the abrasion tester shall be covered with a pad of cotton cheesecloth conforming to A.1, approximately 5 mm thick and 10 mm wid
28、e. Instructions for preparing the cheesecloth pad, cover and fixture are provided in Annex B. 5.2.3 Severe abrasion test The rubbing head of the abrasion tester shall be affixed with a standard eraser, conforming to A.2. The eraser shall be inserted into the holder so that the exposed length does no
29、t exceed 3 mm. It is permissible to clean the eraser with a clean towel but solvents should not be used. Also, the eraser may be conditioned by rubbing it across a clean, smooth or frosted glass surface to wear away some of the rubber if embedded foreign material is suspected. 5.3 Degree of severity
30、 (conditioning method 01: abrasion) The degrees of severity for conditioning method 01 are given in Table 1. Table 1 Degrees of severity for conditioning method 01: abrasion Degree of severity 01 02 03 04 Abrader Cheesecloth Cheesecloth Eraser Eraser Number of strokes 50 100 20 40 Force 5 N 1 N 5 N
31、1 N 10 N 1 N 10 N 1 N A requirement for a greater number of strokes shall be indicated by adding a multiplier to the degree of severity. For example, a requirement for 150 cheesecloth rubs would be indicated as “degree of severity 01 x 3”; a requirement for 100 eraser rubs would be indicated as “deg
32、ree of severity 03 x 5”. 5.4 Recovery Subsequent to the rubbing operation the specimen shall be cleaned as described in Clause 4. 5.5 Evaluation The film on the specimen shall be visually examined in reflected and/or transmitted light, with the unaided eye, for evidence of physical damage to the coa
33、ting. The examination shall be performed using the method specified in Annex C, or that given in ISO 14997, or as agreed between the supplier and the user. The method used shall be stated. The coating shall not show any evidence of damage, such as abrasion or coating removal. If slight sleeking or s
34、cratching is visible and the cheesecloth or eraser and/or coating is suspected of having foreign material embedded in it, another area of the surface shall be retested using a fresh cheesecloth pad or eraser. 2 ISO 2012 All rights reservedBS ISO 9211-4:2012ISO 9211-4:2012(E) 6 Adhesion tests (condit
35、ioning method 02: adhesion) 6.1 General The purpose of these tests is to evaluate to what extent the mechanical properties of optical coatings on components and substrates are affected when subjected to specific tensile or shear stress conditions at ambient atmospheric conditions. 6.2 Test condition
36、s 6.2.1 The adhesive tape used for this test shall be clear in colour with an adhesive strength on steel of at least 9,8 N per 25 mm width when tested in accordance with ISO 29862, Method 1, 180 angle of peel. It shall be 12 mm to 13 mm wide. It shall show no evidence of deterioration and shall be c
37、apable of being unwound from the roll at a normal rate of speed without showing evidence of adhesive offsetting, adhesive splitting, or stringing out of adhesive, nor breakage or splitting of the tape backing. The tape shall be free of bare spots or foreign particles or any defect that may affect se
38、rviceability or appearance. 6.2.2 Apply approximately 25 mm of tape to the coated surface when the dimensions of the specimen permit, with sufficient tape remaining to securely grasp with a thumb and finger. 6.2.3 Press the tape firmly onto the coated surface. Rub the non-adhesive surface of the tap
39、e with a finger to ensure firm contact with the specimen and to work out any air bubbles that may be present. 6.2.4 Unless otherwise required in the relevant specification, do not apply the tape within 2 mm of any rim of the specimen. 6.2.5 Hold the specimen firmly in one hand, and in the other the
40、end of the tape that protrudes beyond the edge of the test specimen. 6.2.6 Remove the tape at an angle perpendicular to the coated surface at one of the rates indicated in T able 2. 6.3 Degree of severity (conditioning method 02: adhesion) The degrees of severity for conditioning method 02 are given
41、 in Table 2. Table 2 Degrees of severity for conditioning method 02: adhesion Degree of severity 01 02 03 Rate of tape removal Slow (approximately 2 s to 3 s per 25 mm) Quick (approximately 1 s per 25 mm) Snap (much less than 1 s per 25 mm)NOTE The “snap” rate of removal refers to a snapping action
42、of the wrist and fingers. 6.4 Recovery Do not clean the specimen prior to evaluation. 6.5 Evaluation The film on the specimen shall be visually examined in reflected and/or transmitted light, with the unaided eye, for evidence of coating removal. The examination shall be performed using the method s
43、pecified in Annex C, or that given in ISO 14997, or as agreed between the supplier and the user. The method used shall be stated. The coating shall not show any evidence of coating removal. ISO 2012 All rights reserved 3BS ISO 9211-4:2012ISO 9211-4:2012(E) Unless otherwise required in the relevant s
44、pecification, visual discolourations of the coating such as stains, smears, streaks or cloudiness shall be acceptable if the specimen conforms to the optical and other environmental durability requirements of the relevant specification. 7 Crosshatch test (conditioning method 03: crosshatch) 7.1 Gene
45、ral The purpose of this test is to evaluate to what extent the adhesion properties of optical coatings on components and substrates are affected after cutting the coating (distorting the stress and influencing the adhesion). 7.2 Test conditions 7.2.1 Use a cutting device e.g. a razor blade (suitable
46、 for soft substrates) or a diamond scribe to make six parallel cuts in the coating, 1,5 mm 0,5 mm apart and approximately 15 mm to 20 mm in length, when the dimensions of the specimen permit. Cut through the coating completely but do not cut too deep into the substrate. Rotate the sample and in the
47、same way make six parallel cuts perpendicular to the first set of cuts. Check the cut pattern for flakes or other irregularities and record the results. 7.2.2 Apply adhesive tape as specified in 6.2.1 over the crosshatch pattern in accordance with 6.2.2 to 6.2.5. 7.3 Conditioning Remove the tape at
48、an angle perpendicular to the coated surface at a snap rate (much less than 1 s per 25 mm). 7.4 Recovery Do not clean the specimen prior to evaluation. 7.5 Evaluation Rate the crosshatch results according to Table 3. Magnification may be used. 4 ISO 2012 All rights reservedBS ISO 9211-4:2012ISO 9211
49、-4:2012(E) Table 3 Rating system for conditioning method 03: crosshatch Classification Picture Description 0 The edges of the cuts are completely unchanged; none of the squares are detached. 1Small flakes of the coating are detached at the intersections; less than 5 % of the total area is affected. 2Small flakes of the coating are detached along the cuts and the intersections; the area affected is 5 % to 15 % of the total area. 3Some parts of the squares are detached; the area affected is 15 % to 3
