SIST EN ISO 7668:2012
(Main)Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss of anodic oxidation coatings at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees (ISO 7668:2010)
Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss of anodic oxidation coatings at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees (ISO 7668:2010)
This International Standard specifies methods for the measurement of specular reflectance and specular gloss of flat samples of anodized aluminium using geometries of 20° (Method A), 45° (Method B), 60° (Method C) and 85° (Method D), and of specular reflectance by an additional 45° method (Method E) employing a narrow acceptance angle. The methods described are intended mainly for use with clear anodized surfaces. They can be used with colour-anodized aluminium, but only with similar colours.
Anodisieren von Aluminium und Aluminiumlegierungen - Messung des gerichteten Reflexionsgrades und des Spiegelglanzes von anodisch erzeugten Oxidschichten bei Winkeln von 20°, 45°, 60° oder 85° (ISO 7668:2010)
Diese Internationale Norm legt Verfahren zur Messung des gerichteten Reflexionsgrades und des Spiegelglanzes von ebenen Proben aus anodisch oxidiertem Aluminium unter Anwendung der geometrischen Messbedingungen unter 20° (Verfahren A), 45° (Verfahren B), 60° (Verfahren C) und 85° (Verfahren D) sowie ein weiteres Verfahren zur Messung des gerichteten Reflexionsgrades unter 45° (Verfahren E) fest, bei dem ein kleiner Empfängerwinkel verwendet wird.
Die beschriebenen Verfahren sind hauptsächlich für farblos anodisierte Oberflächen vorgesehen. Sie können für farbig anodisiertes Aluminium verwendet werden, aber nur bei gleichen Farben.
Anodisation de l'aluminium et de ses alliages - Mesurage des caractéristiques de réflectivité et de brillant spéculaires des couches anodiques à angle fixe de 20 degrés, 45 degrés, 60 degrés ou 85 degrés (ISO 7668:2010)
L'ISO 7668:2010 spécifie des méthodes de mesure de la réflectivité spéculaire et du brillant spéculaire d'échantillons plats d'aluminium anodisé sous des angles de 20° (Méthode A), 45° (Méthode B), 60° (Méthode C) et 85° (Méthode D), plus une autre méthode à 45° (Méthode E) à petit angle d'ouverture pour le mesurage de la réflectivité spéculaire.
Les méthodes décrites sont principalement utilisables sur des surfaces plates anodisées claires. Elles peuvent être utilisées sur de l'aluminium anodisé coloré, mais dans ce cas, uniquement pour des couleurs semblables.
Anodizacija aluminija in aluminijevih zlitin - Merjenje odbojnosti in sijaja anodizirane plasti pod koti 20°, 45°, 60° ali 85° (ISO 7668:2010)
Ta mednarodni standard določa metode za merjenje odbojnosti in sijaja ploščatih vzorcev anodiziranega aluminija z uporabo geometrij 20° (metoda A), 45° (metoda B), 60° (metoda C) in 85° (metoda D) in odbojnosti z dodatno metodo 45° (metoda E) z uporabo ozkega kota sprejemljivosti. Opisane metode so namenjene predvsem uporabi s prozornimi anodiziranimi površinami. Lahko se uporabljajo z barvno anodiziranmi aluminijem, a le podobnih barv.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 7668:2012
01-januar-2012
1DGRPHãþD
SIST EN 12373-11:2002
Anodizacija aluminija in aluminijevih zlitin - Merjenje odbojnosti in sijaja
anodizirane plasti pod koti 20°, 45°, 60° ali 85° (ISO 7668:2010)
Anodizing of aluminium and its alloys - Measurement of specular reflectance and
specular gloss of anodic oxidation coatings at angles of 20 degrees, 45 degrees, 60
degrees or 85 degrees (ISO 7668:2010)
Anodisieren von Aluminium und Aluminiumlegierungen - Messung des gerichteten
Reflexionsgrades und des Spiegelglanzes von anodisch erzeugten Oxidschichten bei
Winkeln von 20°, 45°, 60° oder 85° (ISO 7668:2010)
Anodisation de l'aluminium et de ses alliages - Mesurage des caractéristiques de
réflectivité et de brillant spéculaires des couches anodiques à angle fixe de 20 degrés,
45 degrés, 60 degrés ou 85 degrés (ISO 7668:2010)
Ta slovenski standard je istoveten z: EN ISO 7668:2010
ICS:
25.220.20 Površinska obdelava Surface treatment
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
SIST EN ISO 7668:2012 de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 7668:2012
---------------------- Page: 2 ----------------------
SIST EN ISO 7668:2012
EUROPEAN STANDARD
EN ISO 7668
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS 25.220.20 Supersedes EN 12373-11:2000
English Version
Anodizing of aluminium and its alloys - Measurement of specular
reflectance and specular gloss of anodic oxidation coatings at
angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees
(ISO 7668:2010)
Anodisation de l'aluminium et de ses alliages - Mesurage Anodisieren von Aluminium und Aluminiumlegierungen -
des caractéristiques de réflectivité et de brillant spéculaires Messung des gerichteten Reflexionsgrades und des
des couches anodiques à angle fixe de 20 degrés, 45 Spiegelglanzes von anodisch erzeugten Oxidschichten bei
degrés, 60 degrés ou 85 degrés (ISO 7668:2010) Winkeln von 20°, 45°, 60° oder 85° (ISO 7668:2010)
This European Standard was approved by CEN on 30 October 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7668:2010: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 7668:2012
EN ISO 7668:2010 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 7668:2012
EN ISO 7668:2010 (E)
Foreword
This document (EN ISO 7668:2010) has been prepared by Technical Committee ISO/TC 79 “Light metals and
their alloys” in collaboration with Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the
latest by May 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12373-11:2000.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 7668:2010 has been approved by CEN as a EN ISO 7668:2010 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 7668:2012
---------------------- Page: 6 ----------------------
SIST EN ISO 7668:2012
INTERNATIONAL ISO
STANDARD 7668
Second edition
2010-11-01
Anodizing of aluminium and its alloys —
Measurement of specular reflectance
and specular gloss of anodic oxidation
coatings at angles of 20°, 45°, 60° or 85°
Anodisation de l'aluminium et de ses alliages — Mesurage des
caractéristiques de réflectivité et de brillant spéculaires des couches
anodiques à angle fixe de 20°, 45°, 60° ou 85°
Reference number
ISO 7668:2010(E)
©
ISO 2010
---------------------- Page: 7 ----------------------
SIST EN ISO 7668:2012
ISO 7668:2010(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2010
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, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2010 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 7668:2012
ISO 7668:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Terms and definitions .1
3 Principle .1
4 Apparatus and geometric conditions.2
5 Optical standards .7
5.1 Reference standards.7
5.2 Working standards.7
6 Preparation and calibration of apparatus .7
7 Measurement of specular reflectance and specular gloss .8
7.1 General .8
7.2 Measurement of specular reflectance.8
7.3 Measurement of specular gloss.8
8 Expression of results.11
8.1 General .11
8.2 Specular reflectance .11
8.3 Specular gloss .11
9 Test report.11
Annex A (normative) Specular reflectance and specular gloss of black glass.12
Bibliography.13
© ISO 2010 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 7668:2012
ISO 7668:2010(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation 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. 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 with 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 approval 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 7668 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee
SC 2, Organic and anodic oxidation coatings on aluminium.
This second edition cancels and replaces the first edition (ISO 7668:1986), which has been technically revised.
iv © ISO 2010 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 7668:2012
ISO 7668:2010(E)
Introduction
Specular reflectance and specular gloss are not unique physical properties of a surface. They vary with the
angle of measurement, and with the aperture dimensions that define the incident and the reflected beams,
such that measurements of these properties are not independent of the apparatus being used.
The specular reflectance of most surfaces increases with the angle of measurement and accounts for the use
of reflectometers with various angles as, for example, for painted surfaces. The specular reflectance
characteristics of anodized aluminium, however, do not always behave in the normal manner and, because of
its property of double reflection, reflected light comes partly from the film surface and partly from the
underlying metal. It is advisable to measure the specular reflectance characteristics at 20°, 45°, 60°, and 85°
to obtain a complete understanding of the specular reflectance properties of the anodized surface, and careful
thought should be given to which method or methods are most relevant in any particular situation. The
specular reflectance of bright-anodized aluminium with a mirror finish is best measured using 45° or 20°
geometry.
© ISO 2010 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 7668:2012
---------------------- Page: 12 ----------------------
SIST EN ISO 7668:2012
INTERNATIONAL STANDARD ISO 7668:2010(E)
Anodizing of aluminium and its alloys — Measurement
of specular reflectance and specular gloss of anodic oxidation
coatings at angles of 20°, 45°, 60° or 85°
1 Scope
This International Standard specifies methods for the measurement of specular reflectance and specular gloss
of flat samples of anodized aluminium using geometries of 20° (Method A), 45° (Method B), 60° (Method C)
and 85° (Method D); and of specular reflectance by an additional 45° method (Method E) employing a narrow
acceptance angle.
The methods described are intended mainly for use with clear anodized surfaces. They can be used with
colour-anodized aluminium, but only with similar colours.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
specular reflectance
ratio of the luminous flux, reflected in the specular direction for a specified source and receptor angle, to the
luminous flux of the incident light, normally expressed as a percentage
2.2
specular gloss
ratio of the luminous flux, reflected from an object in the specular direction for a specified source and receptor
angle, to the luminous flux reflected from glass with a refractive index of 1,567 in the specular direction
NOTE To set the specular gloss scale, polished black glass with a refractive index of 1,567 is assigned the value of
100 for geometries of 20°, 45°, 60° and 85° (see Table 5). The phenomenon of light reflectance by anodized aluminium is
very different to that of black glass and the choice of a black-glass standard is arbitrary and made to allow comparison of
different qualities of anodized aluminium.
3 Principle
The specular reflectance and specular gloss of anodized aluminium surfaces are measured under defined
conditions using, as required, geometries of 20°, 45°, 60° and 85°.
© ISO 2010 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 7668:2012
ISO 7668:2010(E)
4 Apparatus and geometric conditions
Usual laboratory apparatus and in particular the following.
4.1 General. Approximate comparisons between surfaces of the same colour can be made, but an
accurate measurement requires the combination of light source, photoelectric cell and associated colour filters
to give a spectral sensitivity, approximating to the CIE photopic luminous efficiency function, weighted for CIE
[1]
standard illuminants C (see CIE 38:1977 ) or D65.
NOTE Since specular reflection is in general spectrally non-selective, the spectral characteristics of the light
source (4.2) and the detector (4.4) need not be critically controlled for the measurement of normal uncoloured anodized
surfaces.
4.2 Polychromatic light source and housing, with a lens that directs a parallel, or very slightly converging,
beam of light onto the surface under test.
4.3 Means for locating the specimen surface, in the correct position for measurement.
4.4 Receptor housing containing a lens, a receptor aperture and a photoelectric cell, to receive the
cone of reflected light.
4.5 Sensitivity control, for setting the photocell current to any desired value on the instrument scale or
digital indicator.
4.6 Receptor meter, capable of giving an indication proportional to the light flux passing the receptor
aperture within 1 % of the full-scale reading. Spectral corrections are not usually required (see Note to 4.1).
4.7 Geometric conditions
The incident angle, ε , which is the angle between the axis of the incident beam and the perpendicular to the
1
surface under test, shall have the following values and tolerances:
⎯ for Method A: 20° ± 0,1°;
⎯ for Method B: 45° ± 0,1°;
⎯ for Method C: 60° ± 0,1°;
⎯ for Method D: 85° ± 0,1°;
⎯ for Method E: 45° ± 0,1°.
There shall be no vignetting of rays that lie within the angles specified above.
The axis of the receptor shall, as far as possible, coincide with the mirror image of the axis of the incident
beam; the receptor angle, ε , which is the angle between the axis of the receptor and the perpendicular to the
2
surface under test, shall be for all meth
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.