Test Background
The purpose of the salt spray test of composite and metal assemblies is to evaluate the galvanic corrosion resistance of joints and bonded structures between carbon fiber reinforced polymer matrix composites (CFRPs) and metal materials when accompanied by temporary or temporary insulation current.
Zhongke Testing Reliability Experiment Center has environmental testing capabilities for various composite materials and metal assemblies, and provides professional salt spray testing services for composite materials and metal assemblies.
Type of test
Neutral salt spray test NSS
Acetate salt spray test AASS
Copper Accelerated Acetic Salt Spray Test CASS
Test method
1. In order to check the reproducibility and repeatability of the galvanic corrosion performance test results of the same test equipment or similar equipment in different laboratories, verification should be carried out regularly in accordance with regulations.
2. Metal reference specimens made of steel or aluminum should be used to evaluate the corrosion performance of the salt spray chamber.
3. As a supplement to metal reference samples made of steel or aluminum, high-purity zinc reference samples can also be used to evaluate the corrosion performance of the salt spray chamber.
Test standard:
GB/T 40340-2021 Composite materials and metal assemblies. Galvanic corrosion test in artificial environment for bonded or fastener connection structures of carbon fiber reinforced polymer matrix composites. Salt spray test
ISO 21746: 2019 Composite materials and metal assemblies. Galvanic corrosion test in artificial environment for bonded or fastener connection structures of carbon fiber reinforced polymer matrix composites. Salt spray test
ISO 1514 Paints and Varnishes Standard Test Plate
ISO 2808 Paints and varnishes Determination of paint film thickness
ISO 3574 Commercial and Stamping Grade Cold Rolled Carbon Sheet Steel Plate
ISO 6361-2 Wrought aluminum and aluminum alloys Sheet, strip and plate Part 2: Mechanical properties
ISO 8044 Corrosion of metals and alloys Basic terms and definitions
ISO 8407 Corrosion of metals and alloys Removal of corrosion products from corrosion specimens
