Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Faster Test For Checking The Efficiency Of The Paints Used As Protection Against Corrosion In The Automotive Industry

14.07.2004


Researchers from the Area of Materials Science and Metallurgical Engineering at the Universitat Jaume I (UJI), Spain, have devised a quicker method to evaluate the systems used in the automotive industry to protect the metal chassis of vehicles against corrosion. This new technique allows the time required to carry out such tests to be reduced from two months to just one day.

The metal chassis of automobiles are under constant exposure to environmental conditions (high ambient relative humidity, proximity to the sea, and pollution in towns and cities) which cause them to oxidize. To prevent this, until recently, manufacturers coated the metal with primers containing chrome and lead pigments that offered a high degree of protection against corrosion, but were later banned because of their harmful effects on health. To replace these substances, the automotive industry is now searching for compounds that offer the same characteristics as those used up till now and which are harmless. This makes formulating the paints a more difficult task because of the greater complexity involved in finding pigments that are equally efficient and in combining the increased number of components that go to make up the primer.

Until now engineers submitted each formulation to a test lasting between 500 and 2000 hours which allowed them to measure their anticorrosive capacity as well as their adherence to the metallic substrate. Yet, a testing time of almost two months was not at all practical for the automotive industry and a group of researchers at the UJI, led by Professor Julio Suay, has designed a new test that accomplishes the same results in just 24 hours.



The technique uses electrochemical principles to test the permeability of the coating to corrosive agents and its capacity to adhere to the bodywork of the automobile. The findings of the research that gave rise to this new test have recently been published in the journals Progress in Organic Coatings and Journal of Coatings Technology.

Hugo Cerdà | alfa
Further information:
http://www.uji.es

More articles from Automotive Engineering:

nachricht New Headlamp Dimension: Fully Adaptive Light Distribution in Real Time
29.06.2017 | Universität Stuttgart

nachricht 3D scans for the automotive industry
16.01.2017 | Julius-Maximilians-Universität Würzburg

All articles from Automotive Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

Leipzig HTP-Forum discusses "hydrothermal processes" as a key technology for a biobased economy

12.07.2017 | Event News

 
Latest News

Researchers create new technique for manipulating polarization of terahertz radiation

20.07.2017 | Information Technology

High-tech sensing illuminates concrete stress testing

20.07.2017 | Materials Sciences

First direct observation and measurement of ultra-fast moving vortices in superconductors

20.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>