Featured Research

from universities, journals, and other organizations

Precious Coatings For Plastic Parts

Date:
January 28, 2009
Source:
Fraunhofer-Gesellschaft
Summary:
Bearings are universal components. Few devices can do without them. A diamond-like coating reduces friction in ball and slide bearings: The carbon layer can be applied to the plastic cage using a special process, and increases the components’ resilience and life span.

Plastic cage coated with diamond-like carbon: Bearings achieve much higher engine speeds with parts coated in this way.
Credit: Copyright Fraunhofer IWM

Bearings are universal components. Few devices can do without them. A diamond-like coating reduces friction in ball and slide bearings: The carbon layer can be applied to the plastic cage using a special process, and increases the components’ resilience and life span.

Related Articles


Be they ball bearings in bicycles, slide bearings in the crankshafts of ships, or high-performance bearings in motor sports – bearings fulfill a wide range of functions. In many cases, they have to withstand enormous engine speeds and thermal loads, which places extremely high demands on the material from which the bearings and the associated bearing cages are made.

Research scientists at the Fraunhofer Institute for Mechanics of Materials IWM in Freiburg are working on the bearings of the future. They are equipping them with a very special coating that makes high-performance roller bearings, for example, even more durable and reliable than they already are. The coating consists of diamond-like carbon (DLC). “Thanks to this coating, we can produce components that are much more robust than conventional elements, such as those made of uncoated plastic,” says IWM division director Dr. Sven Meier. “The coated bearings remain sturdy even if they are not sufficiently lubricated or if they run dry.”

Applying the DLC coatings to the parts requires a special process developed by the scientists at the IWM. “Our coating method is also suitable for geometrically complex parts, such as bearing cages,” Meier explains. The engineers have optimized the technique in such a way that even very thick DLC coatings – thicker than 20 micrometers – can be applied. “Our process enables us to generate targeted micro-structured coating systems, which in turn makes it possible to optimize the effect of lubricants and minimize friction and wear in the bearings. If required, we can also produce ultra-smooth surfaces.” The researchers achieved the best coating results on components made of special plastic. Bearings made of this material achieve much higher engine speeds, develop less heat, and reach a much better service performance with the new coating than in uncoated form.

At present, the researchers are working on methods of developing coating processes specifically optimized for particular applications with the help of mathematical models. Their aim is to reduce the high costs currently required to develop such complex processes.


Story Source:

The above story is based on materials provided by Fraunhofer-Gesellschaft. Note: Materials may be edited for content and length.


Cite This Page:

Fraunhofer-Gesellschaft. "Precious Coatings For Plastic Parts." ScienceDaily. ScienceDaily, 28 January 2009. <www.sciencedaily.com/releases/2009/01/090126082355.htm>.
Fraunhofer-Gesellschaft. (2009, January 28). Precious Coatings For Plastic Parts. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2009/01/090126082355.htm
Fraunhofer-Gesellschaft. "Precious Coatings For Plastic Parts." ScienceDaily. www.sciencedaily.com/releases/2009/01/090126082355.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Who Will Failed Nuclear Talks Hurt Most?

Who Will Failed Nuclear Talks Hurt Most?

Reuters - Business Video Online (Nov. 25, 2014) With no immediate prospect of sanctions relief for Iran, and no solid progress in negotiations with the West over the country's nuclear programme, Ciara Lee asks why talks have still not produced results and what a resolution would mean for both parties. Video provided by Reuters
Powered by NewsLook.com
Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Flying Enthusiast Converts Real-Life Aircraft Cockpit Into Simulator

Reuters - Innovations Video Online (Nov. 25, 2014) A virtual flying enthusiast converts parts of a written-off Airbus aircraft into a working flight simulator in his northern Slovenian home. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Car Park Solution for Flexible Green Energy

Car Park Solution for Flexible Green Energy

Reuters - Innovations Video Online (Nov. 24, 2014) A British solar power start-up says that by covering millions of existing car park spaces around the UK with flexible solar panels, the country's power problems could be solved. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Newsy (Nov. 23, 2014) Microsoft has robotic security guards working at its Silicon Valley Campus. Video provided by Newsy
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