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Archives :: Processing & Handling :: Engineering Materials

Displaying 61 - 80 of 142 stories.
October 15, 2008
Feature Report: Part 2: Valves & Specialty Metal Materials
The role of valves in a process is far from insignificant. These components enable engineers to control the vitals of a process: temperature, pressure, concentration, and flow. In some cases, the failure of a valve could be catastrophic and in other cases just a headache, but whatever your situation, your material selection will surely be one of the most important elements in determining the reliability of...
http://www.che.com/processing_and_handling/engineering_materials/Feature-Report-Part-2-Valves-and-Specialty-Metal-Materials_4240.html
October 15, 2008
Chementator: Improving leather
Last month, Lanxess AG (Leverkusen, Germany; www.lanxess.com) launched Levotan X-Cel, an polymer mixture based on expandable microcapsules, for retannage in leather processing. With a diameter of 5 – 20...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Improving-leather_4260.html
August 15, 2008
Chementator: A New Process for Making Solar-Cell-Grade Silicon Slated for Commercialization
Chisso Corp. (Tokyo, Japan; www.chisso.co.jp) has established a new joint-venture (JV) company to produce solar grade silicon using a new process that was first developed by Chisso and subsequently refined, jointly, by the three JV partners: Chisso (50% share), Nippon Mining Holdings Inc. (Tokyo; 30%), and Toho Titanium Co., Ltd. (Chigasaki, both Japan...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-New-Process-for-Making-Solar-Cell-Grade-Silicon-Slated-for-Commercialization_4109.html
August 15, 2008
Chementator: Tiny Buckyball Crystals
Researchers at the University of Surrey (U.K., www.surrey.ac.uk) have discovered a method to make ultra-small, pure crystals of buckminsterfullerene (C60). Lozenge-shaped crystals...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Tiny-Buckyball-Crystals_4114.html
July 15, 2008
Newsfront: Material Marvels
  Much as the chemical process industries (CPI) themselves are always evolving, so too are the engineering materials that play a role behind the scenes. While they may not always make headlines as groundbreaking scientific technologies tend to do, new and improved engineering materials are constantly emerging to enhance and advance the practice of chemistry. A few of the latest materials are...
http://www.che.com/processing_and_handling/engineering_materials/Newsfront-Material-Marvels_4003.html
July 15, 2008
Chementator: A new solvent
The Dow Performance Fluids, a business of Dow Chemical Co. (Midland, Mich.; edlinks.che.com/7374-546) has introduced a new high-temperature cleaning solvent for cleaning polymer-process reactor vessels...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-solvent_4041.html
June 15, 2008
Newsfront: Chemistry for Construction   Â
At 2,064 ft as of this past April, the unfinished Burj Dubai skyscraper in the United Arab Emirates is the tallest man-made structure on earth. "A structure of this kind is only possible if the right [concrete] mixture is guaranteed," as BASF’s executive director for research Stefan Marcinowski has pointed out. In fact, "a chemist with an analytical laboratory is constantly monitoring...
http://www.che.com/processing_and_handling/engineering_materials/Newsfront-Chemistry-for-Construction-A-A_3938.html
June 15, 2008
Chementator: A barrier for PVs
Honeywell Specialty Materials (Morristown, N.J.; edlinks.che.com/7373-546) has launched PowerShield PV325, a material that protects photovoltaic (PV) modules — including the critical components that convert sunlight into electricity...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-barrier-for-PVs_3969.html
June 15, 2008
Zirconium and its Alloys: For Extreme Sulfuric Acid Applications
One of the earliest applications for zirconium in the chemical process industries (CPI) is for sulfuric acid service. Used commonly during the manufacture of chemicals as a catalyst, dehydrating agent, absorbent, or an oxidizing or reducing agent, sulfuric acid is one of the most important and the largest produced inorganic chemicals in the world. Zirconium has been chosen for sulfuric acid environments...
http://www.che.com/processing_and_handling/engineering_materials/Zirconium-and-its-Alloys-For-Extreme-Sulfuric-Acid-Applications_3973.html
May 15, 2008
Chementator: These Heat Exchangers Feature Tantalum as an Alternative to Graphite
Carbone Lorraine (CL; Paris, France; edlinks.che.com/7372-538) is launching a new welded-plate heat exchanger, dubbed Heatex, which features plates made of tantalum CL-Clad. The patented CL-Clad technology involves the brazing of steel onto "reactive" metals, such as tantalum, titanium and zirconium, in order to fabricate columns, reactors and (now) heat exchangers used in corrosive service. Such...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-These-Heat-Exchangers-Feature-Tantalum-as-an-Alternative-to-Graphite_3880.html
May 15, 2008
Chementator: Roll-to-Roll Manufacturing a Breakthrough for OLED Commercialization
A new roll-to-roll manufacturing process promises to overcome the major cost barriers impeding the widespread adoption of high-performance organic light-emitting diodes (OLEDs) for lighting, e-paper and display applications. The culmination of a four-year, $13-million research partnership between GE Global Research (Niskayuna, N.Y.; edlinks.che.com/7372-542), Energy Conversion Devices, Inc. (ECD; Rochester...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Roll-to-Roll-Manufacturing-a-Breakthrough-for-OLED-Commercialization_3882.html
May 15, 2008
Chementator: A Less Expensive Way to Make Boron Carbide Components
Because parts made from boron carbide have a higher rigidity and lower weight compared with those made from silicon carbide and alumina, boron carbide parts are important components for semiconductor manufacturing equipment and other components requiring high-temperature and abrasion resistance, including nozzles, mechanical seals and hard-disc substrates. However, making boron carbide parts with complex...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-Less-Expensive-Way-to-Make-Boron-Carbide-Components_3883.html
May 15, 2008
Chementator: Printing Solar Cells
Photovoltaics manufacturer Konarka Technologies, Inc. (Lowell, Mass; edlinks.che.com/7372-546) has successfully performed the first use of drop-on-demand inkjet printheads for the fabrication of organic solar cells. Using a Dimatix Materials Printer (DMP) provided by Fujifilm Dimatix...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Printing-Solar-Cells_3885.html
May 15, 2008
Chementator: Metal Pretreatment
Last month, Henkel KgaA (Düsseldorf, Germany; edlinks.che.com/7372-552) introduced a new conversion coating process called TecTalis, which replaces zinc...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Metal-Pretreatment_3889.html
May 15, 2008
Chementator: Smart Shoes
IQTex (Hamburg; Germany; edlinks.che.com/7372-553) has developed a ventilation element — integrated into the soles of shoes — that functions like a flower, which closes up in the rain and...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Smart-Shoes_3890.html
April 15, 2008
Chementator: Diamond may be a pump’s best friend
Advanced Diamond Technologies, Inc. (ADT; Romeoville, Ill.; edlinks.che.com/7371-533) has launched a new family of mechanical seals to improve efficiency, save energy and reduce costs in fluid-pumping systems. The patented UNCD (ultrananocrystalline diamond) Seals provide the benefits of a diamond at a cost comparable to silicon carbide face seals, according to ADT, which was formed in 2003 to...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Diamond-may-be-a-pumps-best-friend_3808.html
April 15, 2008
Chementator: This composite combines the unique properties of two new forms of carbon
Of all known materials, carbon nanotubes (CNTs) have the highest thermal conductivity and mechanical strength as well as the ability to withstand the highest electric-current density, making them an attractive material for electric wiring, heat dissipation, field electron emission, and other applications. And graphene — a two-dimensional hexagonal lattice of carbon atoms — has become attractive...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-composite-combines-the-unique-properties-of-two-new-forms-of-carbon_3809.html
April 15, 2008
Chementator: A new polymer set for a commercial launch
Polyglycolic acid (PGA) has good properties: a very high gas impermeability, even under 80% humidity; biodegrability; high mechanical strength; and good moldability, which makes it a promising polymer for applications such as medical devices and barrier films. But up to now, it has been difficult to make large quantities of the material. Kureha Corp. (Tokyo, Japan; edlinks.che.com/7371-536) has developed a...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-polymer-set-for-a-commercial-launch_3810.html
April 15, 2008
Chementator: Sugar-beet pulp may cut the cost of biodegradable plastic
Sugar-beet processors in the U.S. generate approximately 40 million tons of fiber-rich sugar-beet pulp every year as a byproduct of sucrose extraction. Most of it is used as livestock feed or in pet food. Researchers with the U.S. Agricultural Research Service (ARS; edlinks.che.com/7371-542) are working on a process to convert the pulp into a filler for polylactic-acid-based plastics (PLA)...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Sugar-beet-pulp-may-cut-the-cost-of-biodegradable-plastic_3814.html
April 15, 2008
Chementator: Stronger die cast parts
High-pressure die-cast (HPDC) aluminum alloys cannot normally be heated to high temperatures due to the presence of pores containing entrapped gases, which lead to the formation of surface blisters. CSIRO Materials Science and Engineering (Melbourne, Australia; edlinks.che.com/7371-548) has found that blistering can be avoided by using shorter solution-treatment times at lower temperatures. CSIRO says its...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Stronger-die-cast-parts_3820.html
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