Preventing discolouration of stainless steel upon contact with liquid products

5 October, 2016

“My master’s degree thesis was about corrosion resistance of 304L stainless steels. I feel coatings are a good option but it would be more reliable to change the spring material.”

The Problem

We use packaging that contains a 304 grade stainless steel spring. Exposure of springs to various liquid products causes the springs to discolor. Interaction of liquid with the springs results in surface corrosion and slight discoloration of the product in direct contact with the spring.  Liquid products vary in composition but may include water, surfactants, alcohols, fragrance oils, and emulsifiers. We seek to prevent discolouration of stainless steel upon contact with liquid products.

 

Solver response

My master’s degree thesis was about corrosion resistance of 304L stainless steels. Scientists have been trying to increase the corrosion resistance of stainless steels for a number of years. I feel coatings are a good option but it would be more reliable to change the spring material.
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I know of another material with mechanical properties similar to 304 grade but with better resistance to corrosion. Some tests on this material in the same liquid product could help assess if it is the ideal material for this use.

Sneha K RhodePostdoctoral Researcher, Department of Materials

 

A successful connection

After reviewing the researcher’s response to their request, the seeker held a telephone conference with her to learn more about her capabilities and to discuss possible next steps. Imperial CrowdSolve successfully connected the seeker with an appropriate expert for this technical problem, which they were unable to solve internally.