Featured Research

from universities, journals, and other organizations

UMR Researchers Work To Remove Toxic Components From Aluminum Coatings

Date:
November 16, 1998
Source:
University Of Missouri-Rolla
Summary:
Researchers at the University of Missouri-Rolla, working to remove toxic materials from aluminum components used in the aerospace industry, got a boost recently through $1.5 million in federal funding from the 1999 Defense Appropriations Bill. The funding is for a joint research project between UMR and Boeing Co. to develop more environmentally acceptable corrosion protection for metallic parts of aircraft.

ROLLA, Mo. -- Researchers at the University of Missouri-Rolla, working toremove toxic materials from aluminum components used in the aerospaceindustry, got a boost recently through $1.5 million in federal funding fromthe 1999 Defense Appropriations Bill.

Related Articles


The funding is for a joint research project between UMR and Boeing Co. todevelop more environmentally acceptable corrosion protection for metallicparts of aircraft. This research should also be applicable to otheraluminum products.

"We have proven in our laboratories at UMR that our research efforts toremove toxic materials from aluminum components work," says Dr. James O.Stoffer, director of the Graduate Center for Materials Research at UMR andproject director.

Aluminum used in the construction of aircraft and cars is treated bydipping the metal in chromic acid, one of the most toxic materials knownand one that is targeted for elimination from the workplace by the U.S.Environmental Protection Agency. The chromic acid coats the aluminum with athin layer of chromate material, making it resistant to corrosion.

"The aluminum is then painted with an epoxy paint that has strontiumchromate components in the paint," says Stoffer, who also is a professor ofchemistry at UMR. "The strontium chromate is also toxic."

The interdisciplinary research effort at UMR is helping the U.S. Air Forceuse an alternative to chromate in its aircraft aluminum. "Our research teamhas developed a system to replace chromate conversion coatings by using athin layer, known as a cerium conversion coating, to be used as a firstcoating on the aluminum," Stoffer says. This process also includes painting a non-toxic material known asE-coat on top of the aluminum, providing added protection. "This processreplaces all the toxic materials used on the aluminum," Stoffer says.

The crucial test for the new process system is that the conversion coatingshave to survive 336 hours in a salt fog chamber with no signs of corrosion.And a painted aluminum surface with an X scribe down to base metal, mustsurvive 2,000 hours, Stoffer says. "Our system does both," he adds.

"But a lot still has to be done related to optimization, scale up andimplementation of the technology within Boeing," Stoffer says. Thisincludes part development and sizing and fitting the parts.

The tests, which have been conducted at UMR and at Boeing, will continueuntil the completion of military specifications, Stoffer says.

The research project began in 1994 as part of a grant to UMR fromMcDonnell Douglas (which Boeing later purchased), Monsanto and the MissouriResearch Training Center at UMR. "The initial grant was for $150,000, butwe have received continuous funding for this project since then," Stoffersays. "The Air Force and Boeing also funded this project with a $459,000grant to UMR in 1996.

"In addition," Stoffer says, "the Office of Naval Research, with additionalfunding from TDA Research Inc. of Denver, Colo., presented UMR with a$300,000 grant for three years in 1996."

The research team from UMR is being led by Stoffer, Dr. Thomas J. O'Keefe,Curators' Professor of metallurgical engineering, and Dr. Harlan U.Anderson, Curators' Professor of ceramic engineering. "We have also had anumber of graduate students working with us as a team on this researchproject for the last five years, and efforts to increase the number ofgraduate students are now in process," Stoffer says.


Story Source:

The above story is based on materials provided by University Of Missouri-Rolla. Note: Materials may be edited for content and length.


Cite This Page:

University Of Missouri-Rolla. "UMR Researchers Work To Remove Toxic Components From Aluminum Coatings." ScienceDaily. ScienceDaily, 16 November 1998. <www.sciencedaily.com/releases/1998/11/981116044007.htm>.
University Of Missouri-Rolla. (1998, November 16). UMR Researchers Work To Remove Toxic Components From Aluminum Coatings. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/1998/11/981116044007.htm
University Of Missouri-Rolla. "UMR Researchers Work To Remove Toxic Components From Aluminum Coatings." ScienceDaily. www.sciencedaily.com/releases/1998/11/981116044007.htm (accessed October 25, 2014).

Share This



More Matter & Energy News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
Real-Life Transformer Robot Walks, Then Folds Into a Car

Real-Life Transformer Robot Walks, Then Folds Into a Car

Buzz60 (Oct. 24, 2014) Brave Robotics and Asratec teamed with original Transformers toy company Tomy to create a functional 5-foot-tall humanoid robot that can march and fold itself into a 3-foot-long sports car. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Police Testing New Gunfire Tracking Technology

Police Testing New Gunfire Tracking Technology

AP (Oct. 24, 2014) A California-based startup has designed new law enforcement technology that aims to automatically alert dispatch when an officer's gun is unholstered and fired. Two law enforcement agencies are currently testing the technology. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins