The cold water closed loop is built from pipes, flanges, and fittings. The problem is that pH reduces. The corrosion is observed on some flanges as shown in the picture:
Use Cause and Effect Chain analysis to understand the root cause of the problem and find a solution.
The corrosion is related to the pH drop - metal corrosion results in the generation of H(+) ions
This occurs due to the electrochemical process:
There are at least two main reasons for this:
pH drop is observed
Replace the water when the parameters (pH and conductivity) got out of the spec limits
Corrosion occurs between metal parts (flanges)
Connect the flanges with wire to ensure equal potential
Electrical current occurs through the cooling water between the parts (flanges)
Replace the water continuously to ensure low conductivity of the water
Electrical potentials difference exists between the parts (flanges)
Ground all the metallic parts (pipes, flanges) to ensure equal electrical potentials
Parts made from different materials
Replace all the metal pipes with plastic pipes
In past decades, polymeric micropillar devices have gained a great deal of attention in micro and nano technology research as the result of their potential and practical usage in many applications. This project is going to deal with the process of how to fabricate the magnetic micropillars, from the beginning â the planning and design, improving the existing process, lithography to create the base silicon mold and then creating the PDMS pillars that contains nano magnetic particles of Fe_3 O_4, the process today is not efficient enough in terms of cost and time and we are wishing to improve it, in the end we will have a device with micro-pillars that can move correspondingly to external magnetic field which will help us to do many advanced experiments in the biology field like using the device for cell stimulation.