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GE Introduces Two New Grades of Boron Nitride Coatings, Offering Enhanced Release Capabilities in High Temperature, Corrosive Environments

Published on 2006-11-17. Author : SpecialChem

STRONGSVILLE, OH -- The Ceramics division of GE Advanced Materials announced the introduction of two new boron nitride (BN) coatings, grades LPC and TPC, complementing the existing coating product line. Boron nitride coatings protect surfaces from damage caused by exposure to corrosive environments, such as those found in molten aluminum, other non-ferrous metals, and glass.

Grades LPC and TPC are water-based boron nitride coatings that are excellent candidates for use on surfaces that experience extreme corrosion in metal-processing environments, such as during the manufacture of aluminum, magnesium, and other non-ferrous metals. Unlike existing boron nitride coatings from GE, grades LPC and TPC are unique because they feature a high concentration of boron nitride powder and a strong binder system for even longer coating life. Both grades share the same formula, with the exception of a green pigment, which is included in grade TPC to act as a wear indicator.

The new BN coatings help aluminum and other processors reduce their cost of operations in several ways. They protect the transport surfaces from attack by damaging molten metal, thereby extending the life of dies and molds. They provide excellent metal release properties, minimizing the time and expense of removing metal build-up during and after a cast. Additionally, these high-purity coatings offer processors protection against contamination in their products. Grades LPC and TPC both contain boron nitride powder that remains chemically inert to 850° C, preventing contamination in metals and thus improving finished metal quality.

LPC and TPC coatings may be shipped undiluted to reduce weight and associated shipping costs. The customer may then dilute the coatings with water, in up to a four-to-one ratio. The two products offer flexible application, providing good adhesion when applied to almost all substrates, regardless of whether they are clean, unclean, or have previously been treated with other protective coatings. LPC and TPC coatings can be applied to either hot or cold surfaces.

"In benchmark testing conducted by an independent metallurgist, LPC and TPC coatings demonstrated excellent refractory protection and molten metal release properties, when compared to the leading competitive boron nitride coating," said Cynthia Andersen, industry manager, Polymers and Coatings, GE Advanced Materials, Ceramics. "We're confident that LPC and TPC coatings can deliver numerous performance and cost advantages for aluminum and other processors."

About GE - Advanced Materials

The Advanced Materials business of General Electric Company is part of the Industrial business group and is headquartered in Wilton, Conn. Comprised of Silicones and Quartz, GE - Advanced Materials is a global leader in providing a range of high-technology materials solutions. The GE - Advanced Materials, Silicones' portfolio includes silicone-based products and technology platforms, silanes, sealants and adhesives. The Quartz portfolio includes high-purity fused quartz and ceramics materials. These materials solutions are used as springboards for innovation in hundreds of consumer and industrial applications ranging from car engines and integrated circuits to biomedical devices and cosmetics. Industries served include aerospace, agriculture, appliances, automotive, construction, electronics, furniture and furnishings, healthcare, home care, industrial, lighting, packaging, personal care, plastics, semiconductor, telecommunications, tire, transportation, and water purification. As a Worldwide Partner of the Olympic Games, GE is the exclusive provider of a wide range of innovative products and services that are integral to a successful Games.

Source: GE - Advanced Materials

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