MACOR Lighting & Materials Corning Incorporated Lighting & Materials Houghton Park CB-08 Corning, New York 14831 tel: 607-974-4331 fax: 607-974-7618 www.corning.com MACOR is a registered trademark of e-mail: macor corning.com Corning Incorporated, Corning, NY 14831 MACOR 01 Printed in the U.S.AMACOR Applications Machinable Glass Ceramic With MACOR Machinable Glass Ceramic Ultra-High Vacuum Environments (MGC), fabrication is fast because it can is MACHINABLE with ordinary metal working tools MACOR Machinable Glass Ceramic is used as an insulator be machined into complicated shapes or coil support and for vacuum feed-throughs. In these applications, allows FAST TURNAROUND, no post firing required and precision parts with ordinary metal the conductive materials are supported by the MACOR MGC part working tools, quickly and inexpensively, holds TIGHT TOLERANCES, up to .0005 and a compatible sealing glass is used to produce a vacuum-tight, and it requires no post firing after withstands HIGH TEMPERATURE, up to 1000C (no load) hermetic seal. machining. That means no frustrating is CLEAN, no outgasing and zero porosity delays, no expensive hardware, no post fabrication shrinkage, and no costly Constant Vacuum Applications diamond tools to meet specifications. MACOR MGC parts are found in spacers, headers and windows for microwave tube devices and as sample holders in field ion microscopes. MACOC R Properties Aerospace Industry MACOR Machinable Glass Ceramic has a continuous use temperature Over 200 distinctly shaped MACOR MGC parts can be found on of 800C and a peak temperature of 1000C. Its coefficient of thermal Americas reusable Space Shuttle Orbiter. Retaining rings of MACOR expansion readily matches most metals and sealing glasses. It is MGC are used at all hinge points, windows and doors. nonwetting, exhibits zero porosity, and unlike ductile materials, wont deform. It is an excellent insulator at high voltages, various frequencies, Also, large pieces of MACOR glass ceramic are used in a NASA and high temperatures. When properly baked out, it wont outgas in spaceborne gamma radiation detector. For this application, frame vacuum environments. corners are joined by a combination of machined (butt-lap) mechanical joints and a sealing glass. Machining Nuclear-Related Experiments Machining tolerances are surprisingly tight, up to .0005 . It can be machined to a surface finish of less than 20in. and polished to a Since MACOR MGC is not dimensionally affected by irradiation, smoothness of 0.5in.-AA. Configurations are limited only by available small cubes of the material are machined to a tolerance of one equipment and the experience of the machinist. micron and used as a reference piece to measure dimensional change in other materials. Sealing, Joining and Metalizing Welding Nozzles MACOR MGC can also be joined or sealed - both to itself and to other materials - in a number of ways: metalized parts can be soldered Welding equipment manufacturers are using MACOR MGC together and brazing has proven an effective method of joining the as a nozzle on the tips of oxyacetylene torches. The materials material to various metals epoxy produces a strong joint, and sealing nonwetting characteristic means molten particles wont adhere glass creates a vacuum tight seal. Even a straight-forward mechanical to and decrease the effectiveness of the nozzle. The Point is this: joint is possible. When you need the performance of a Fixtures It can be thick film metalized using metal inks, technical ceramic (high use temperature, or thin film metalized by sputtering. MACOR MGC is used as an electrode support and burner block in electrical resistivity, zero porosity) and several industrial high heat, electrical cutting operations due to its low your application demands the ready thermal conductivity and excellent electrical properties. fabrication of a complicated shape (quickly, precisely, privately), look at Medical Equipment MACOR MGC. It will lower costs and substantially reduce the time between Producers of medical components are intrigued by MACOR MGCs design and actual use. inertness, precise machinability and dimensional stability. 2 3 MACOR Applications