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Protecting zirconium dioxide in turbine engines.(COATINGS)
- Article from:
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Advanced Ceramics Report
- Article date:
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June 1, 2008
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Copyright informationCOPYRIGHT 2008 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Damage caused by grains of sand entering the turbine engines of aircraft can cause severe damage by corroding the zirconium dioxide (zirconia) thermal-barrier coatings that insulate and protect engine components from high temperatures. To answer this problem, a team of engineers from Ohio State University, USA, is testing a novel formulation of the material.
Due to zirconia's high insulating properties, it has been used for ceramic coatings in turbines for decades. However, operating at elevated temperatures means that sand and other particles drawn into the turbines stick to the ceramic, turn to molten glass, and erode the protective coating, which is about 250 [mu]m.
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Japanese Inventors Develop Molten Glass Degassing Apparatus
US Fed News Service, Including US State News;
May 31, 2008 ;
314 words
......Ito, all from Yokohama, Japan, have developed a molten glass degassing method. According to the U.S. Patent & Trademark Office: "A conduit for molten glass, a molten glass degassing method and a sub-atmospheric apparatus...
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Zirconia coatings for jet engines.(AEROSPACE)
Advanced Ceramics Report;
July 1, 2008 ;
498 words
......to the ceramic, turn to molten calcium--magnesium--aluminosilicate...researchers, who were led by Nitin Padture, a professor of materials...the zirconia so that the molten glass cannot erode the ceramic...aluminium and titanium turns molten glass into a stable crystal...are ...
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Glass Dancer
Minnesota Monthly;
May 1, 2008 ;
Rosengren, John;
533 words
......Casanova makes magic with heat, light, and molten glass Walk through the door of Pat Casanova...one end in a crucible of honey-like molten glass. Extracting a softball-sized blob, he...earth expressed in a dance with hot molten glass on the end of a hollow pipe." The danger...
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Japanese Inventors Develop Molten Glass Supply Device
US Fed News Service, Including US State News;
November 21, 2006 ;
374 words
......all from Otsu, Japan, have developed a molten glass supply device, a glass formed product...S. Patent & Trademark Office: "A molten glass supply device is provided, which can...in connection with the conventional molten glass supply device for high viscosity glass...
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Japanese Inventors Develop Molten Glass Vacuum Degassing Apparatus
US Fed News Service, Including US State News;
November 18, 2006 ;
298 words
......developed a vacuum degassing apparatus for a molten glass. According to the U.S. Patent &...Office: "A vacuum degassing apparatus for molten glass includes: a vacuum housing which is...in the vacuum housing to vacuum-degas molten glass as the molten glass flows ...
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A TOUCH OF GLASS FOUNDER OF FITCHBURG DESIGN CENTER WAS LOOKING FOR SEA...
The Capital Times (Madison, WI);
April 11, 2006 ;
Williams-Masson, Ellen;
649 words
......Ribbons of fiery orange swirl through molten glass, expanding as life is breathed into...something in a computer. Brooke blows molten glass into functional glassware like pitchers...easier and some people don't, he said. Molten glass just behaves in a certain way and there...
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NSW: Molten glass leak at a western Sydney factory
AAP General News (Australia);
August 3, 2006 ;
88 words
......General News (Australia) 08-03-2006 NSW: Molten glass leak at a western Sydney factory Molten glass is leaking from a tank at a containers...crews are currently working to cool the molten glass in order to stop the flow .. and then...
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Bottle Maker Puts a Cap on Sags.(Brief Article)
Plant Engineering;
September 1, 2001 ;
413 words
......then cut into ingots. The ingots of hot molten glass are gravity-fed into molding machines...controllers to shut down; sometimes, molten glass flowed out of the furnace onto the factory...When this happened, chaos ensued. The molten glass cooled quickly, destroying the sand...
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Georgia, South Carolina Inventors Develop Glass Melter Apparatus...
US Fed News Service, Including US State News;
June 7, 2007 ;
295 words
......that provides enhanced recirculation of molten glass within a glass melter apparatus. According...tube member disposed within a pool of molten glass contained in the melter. The tube member...includes a lower opening through which the molten glass enters and upper slots disposed ...
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Furnace collapse forces evacuation
The Boston Globe;
July 11, 1992 ;
AP);
91 words
......after a furnace containing 250,000 tons of molten glass overheated. About 40 firefighters were sent...and collapsed; the furnace spewed steam and molten glass toward the roof. The molten glass, used to make bottles and other containers...
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Great balls of fire need a cool hand
Western Morning News, The Plymouth (UK);
June 23, 2007 ;
787 words
......to collect a dollop of bright orange molten glass. It isn't a hot day outside, but here...bowl or plate starts with a dollop of molten glass on the end of a blowing iron. Paul puts...in any way, which doesn't happen. The molten glass cools quickly, and as its temperature...
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FROM CAPE GLASS BLOWING TO CONN. BIG RIGSDETOURS
The Boston Globe;
May 18, 2003 ;
ELLEN ALBANESE;
465 words
......2400 degrees, each hold 250 pounds of molten glass - clear, cobalt, ruby, and teal on the...who dripped just the right amount of molten glass onto the vase in a soft, reddish-orange...cobalt blue. Another measured drip of molten glass created a "lip wrap," a blue rim on...
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Japanese Inventors Develop Molten Glass Conduit
US Fed News Service, Including US State News;
June 19, 2008 ;
311 words
......Japan, have developed a conduit for molten glass. An abstract of the invention, released...invention provides a metal conduit for molten glass and a vacuum degassing apparatus are...metal conduit from vibrated even when molten glass is conveyed by the metal conduit. By...
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Reflections in a craftsperson's eye `Pictures in glass' created at studio
The Boston Globe;
December 20, 1998 ;
D. Quincy Whitney, Globe Correspondent;
787 words
......deception only begins there. Working in molten glass, especially, is a study in possibilities...doing nothing but making patterns on molten glass, doing nothing but decorating glass...assistants have to be ready to apply molten glass designs within a relatively short time...
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Firefighters tackle leaking molten glass
The Press;
September 10, 2001 ;
172 words
......central Auckland have spent four hours containing a stream of molten glass leaking from a cracked kiln at the ACI glass plant in south...region commander, operations, Dave Neil said 50 tonnes of molten glass was sitting above the crack in the kiln at the Penrose plant...
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