An extract of juice from the fruit of date palms like the ones shown here in Morocco could be used as the basis of a nontoxic anti-corrosive agent for aluminum alloys commonly used in aircraft structures. (Source: Wikimedia Commons/Erg Chebbi)
@Ann: Thanks for the data. It looks like this coating will reduce the corrosion rate by a factor of about 3.5 at the highest concentration.
I agree with you that a dismissive attitude towards natural products is a prejudice we can ill afford. That being said, it looks like, in this case, the performance of the natural product doesn't match the performance of industrial products.
Chuck, at present it's a potential OEM or aftermarket anti-corrosive coating on aluminum alloys used on automotive and aerospace components. Whether it could be incorporated into other materials hasn't been determined yet.
This is an interesting development indeed. But my question is how well does it prevent corrosion in an evironment of saturated salt solution, which is more typical of the road salt contamination in this southeast corner of Michigan. Our salt is more brutal than seawater, and it is present about half of the year, until it all washes away.
My other question is about the economics of the process as compared to other methods of protection.
@Dave: You are absolutely right that taking a dismissive attitude towards exploration of natural products as substitutes for industrial products is short sighted. Maybe this particular strain doesn't stand toe to toe with the industrial offering, but hopefully over time, with some research and exploration, it will.
I sense a bit of a recurring theme. Often mechanical designers turn to natural design to solve complicated physical problems. It seems "natural" that a chemist would turn to nature for clues to chemical problems. When considering all the lifecycle costs (including byproducts, disposal and toxicity issues) some "natural" solutions just might be better than existing "artificial solutions" in the long run.
Altair has released an update of its HyperWorks computer-aided engineering simulation suite that includes new features focusing on four key areas of product design: performance optimization, lightweight design, lead-time reduction, and new technologies.
At IMTS last week, Stratasys introduced two new multi-materials PolyJet 3D printers, plus a new UV-resistant material for its FDM production 3D printers. They can be used in making jigs and fixtures, as well as prototypes and small runs of production parts.
In a line of ultra-futuristic projects, DARPA is developing a brain microchip that will help heal the bodies and minds of soldiers. A final product is far off, but preliminary chips are already being tested.
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