Verkkokauppa
SFS-EN ISO 15720:en
Metallic coatings. Porosity tests. Porosity in gold or palladium coatings on metal substrates by gel-bulk electrography (ISO 15720:2001)
Soveltamisala
Suomenkielistä soveltamisalaa ei ole saatavissa.
This test method covers equipment and techniques for determining porosity in noble metal coatings, particularly electrodeposits of gold, palladium and palladium-nickel alloy (70 % to 90 % palladium) and clad metals used on electrical contacts.
The gel-bulk procedure is not as sensitive to small pores and is more complex than porosity tests involving gaseous corrodants (see ISO 14647 and ISO 15721). It also involves more chemicals, preparation and auxiliary equipment.
This test is intended to be used for quantitative descriptions of porosity (such as number of pores per unit area or per contact) only on measurement areas where coatings have a sufficiently low pore density such that the corrosion sites are well separated and can be readily resolved. As a general guideline this can be achieved for pore densities up to about 25/cm2.
Other porosity testing methods are outlined in ISO 10308. Detailed critical reviews of porosity testing are also available. Other porosity test methods are described in ISO 12687, ISO 14647 and ISO 15721.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
This test method covers equipment and techniques for determining porosity in noble metal coatings, particularly electrodeposits of gold, palladium and palladium-nickel alloy (70 % to 90 % palladium) and clad metals used on electrical contacts.
The gel-bulk procedure is not as sensitive to small pores and is more complex than porosity tests involving gaseous corrodants (see ISO 14647 and ISO 15721). It also involves more chemicals, preparation and auxiliary equipment.
This test is intended to be used for quantitative descriptions of porosity (such as number of pores per unit area or per contact) only on measurement areas where coatings have a sufficiently low pore density such that the corrosion sites are well separated and can be readily resolved. As a general guideline this can be achieved for pore densities up to about 25/cm2.
Other porosity testing methods are outlined in ISO 10308. Detailed critical reviews of porosity testing are also available. Other porosity test methods are described in ISO 12687, ISO 14647 and ISO 15721.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Tuoteryhmä(t)
Sidokset
Velvoittavat viittaukset
ISO 10308:1995 Metallic coatings -- Review of porosity tests
ISO 2079:1981 Surface treatment and metallic coatings -- General classification of terms
ISO 2080:1981 Electroplating and related processes -- Vocabulary
ISO 2079:1981 Surface treatment and metallic coatings -- General classification of terms
ISO 2080:1981 Electroplating and related processes -- Vocabulary
Tekninen komitea
Vahvistuspäivä
12.11.2001
Julkaisupäivä
09.11.2001
Painos
1
Sivumäärä
20
Julkaisun kieli
englanti