HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
News
Materials & Assembly
Fruit Juice Guards Against Aluminum Corrosion
10/10/2012

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)
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)

Return to Article

View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 2/2
Dave Palmer
User Rank
Platinum
Re: Effect on corrosion rate?
Dave Palmer   10/10/2012 6:45:32 PM
NO RATINGS
@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.

TJ McDermott
User Rank
Blogger
Re: Effect on corrosion rate?
TJ McDermott   10/11/2012 1:07:08 AM
NO RATINGS
If I understand your statement, the date palm juice is 1/3 as good as an industrial chromate?  That's not a negative statement but simple comparison.

The lower corrosion resistance is possibly more than offset by the ease of handling of the waste.

Beth Stackpole
User Rank
Blogger
Re: Surprise finding
Beth Stackpole   10/11/2012 6:58:06 AM
NO RATINGS
Perhaps parallel to the corn harvest/ethanol scenario from a while back?

Larry M
User Rank
Platinum
Re: Surprise finding
Larry M   10/11/2012 10:10:33 AM
NO RATINGS
Uhhh, Beth, sugars deteriorate teeth because they provide a hospitiable growth environment for bacteria which cause the damage.

Seen any aluminum-eating bacteria lately?

Ann R. Thryft
User Rank
Blogger
Re: Surprise finding
Ann R. Thryft   10/11/2012 11:47:00 AM
NO RATINGS
Beth, yes, that's what I had in mind. I have no evidence there's a parallel here, but am merely wondering, since dates are a food crop.

Ann R. Thryft
User Rank
Blogger
Re: Future use
Ann R. Thryft   10/11/2012 1:59:36 PM
NO RATINGS
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.

William K.
User Rank
Platinum
Fruit Juice fights corrosion?
William K.   10/11/2012 9:06:00 PM
NO RATINGS
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.

Beth Stackpole
User Rank
Blogger
Re: Effect on corrosion rate?
Beth Stackpole   10/12/2012 8:20:39 AM
NO RATINGS
@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.

Scott Orlosky
User Rank
Platinum
Re: Effect on corrosion rate?
Scott Orlosky   10/19/2012 5:20:23 PM
NO RATINGS
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.

<<  <  Page 2/2
Partner Zone
Latest Analysis
A South African startup is combining recycled plastic with solar power to give underprivileged school children a stylish schoolbag that also supplies them with light to study by.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
Technology and global expansion are playing key roles in making manufacturing an attractive field for women to join, more than ever before, said the president of a woman-owned family of companies.
A few years ago, reshoring roared onto the scene as the next great movement in manufacturing, but the data so far reflect otherwise.
In another sign that self-driving cars are on the distant horizon, Ford has been granted a patent for an “autonomous vehicle with reconfigurable seats.”
More:Blogs|News
Design News Webinar Series
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
6/11/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 31 - Sep4, Embedded System Design Techniques™ - Writing Portable and Robust Firmware in C
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service