The standard EN ISO 15721-2001 metallic coatings porosity test, determining the porosity of gold or palladium coatings by sulfurous acid and sulphur dioxide vapors specifies a method for determining the porosity of gold or palladium metallic coatings by treating them with sulphurous acid and sulphur dioxide vapors. This test assesses the porosity of coatings by observing changes in the coating by exposing it to a specific gaseous environment. Porosity is an important factor affecting the corrosion resistance and durability of coatings, especially in noble metal coating applications, ensuring surface compactness is critical to performance. The standard elaborates the test conditions, operation steps, equipment requirements and result determination methods in detail, providing a scientific basis for metallic coating quality control.
| Status | Active |
|---|---|
| CCS | ICS | (25.220.40) 金属镀层 |
| Release Date | 2001-03-31 00:00:00 | Implementation Date | 2001-04-01 00:00:00 |