Hivatkozási szám

MSZ EN ISO 15721:2002

Dokumentumazonosító

121448

Cím

Fémbevonatok. A porozitás vizsgálata. Az arany- vagy a palládiumbevonat porozitásának meghatározása kénessav-/kén-dioxid-gőzben (ISO 15721:2001)

Angol cím

Metallic coatings. Porosity tests. Porosity in gold or palladium coatings by sulfurous acid/sulfur dioxide vapour (ISO 15721:2001)

Alkalmazási terület

This test method covers equipment and methods for determining the porosity of gold or palladium coatings, particularly electrodeposits and clad metals used on electrical contacts. It is designed to show whether the porosity level is less than or greater than a given value which by experience is considered by the user to be acceptable for the intended application. This porosity test involves corrosion reactions in which the products delineate defect sites in coatings. Since the chemistry and properties of these products may not resemble those found in natural or service environments this test cannot be recommended for the prediction of the electrical performance of contacts unless correlation is first established with service experience. This test is intended to be used for quantitative descriptions of porosity (such as number of pores per unit area or per contact) on coatings that have a sufficiently low pore density so 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 100/cm^2ˇ. Above this value the tests are useful for the qualitative detection and comparisons of porosity. A variety of other porosity testing methods are described in the literature ^[5],[6]ˇ. Other ISO porosity test methods are described ISO 10308, ISO 12687, ISO 14647 and ISO 15720.

ICS

25.220.40 Fémbevonatok

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2002-06-01

Forrás

idt EN ISO 15721:2001; idt ISO 15721:2001

Előd

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,

oldalszáma

10 oldal; E kategória

ára

Nettó: 6730 Ft
Bruttó:
Papír formátum esetén (5% Áfával): 8480 Ft