Aluminum Nitride Ceramic Heater ramps up to 270°F/sec.
July 28, 2010 -
ULTRAMIC® advanced ceramic heater has monolithic, geometrically stable structure resulting in low-porosity, homogenous assembly. Leakage current is less than 10 µA and high thermal conductivity unit can operate up to 752°F depending on application, heater design, and process parameters. Heater's integrated thermocouple configuration optimizes reliability of sensor/heater interface. Available in rectangle or ring forms, units can be machined to meet specific design requirements.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
|Original Press Release |
12001 Lackland Rd.
St. Louis, MO, 63146
Watlow Introduces ULTRAMIC®, an Advanced Ceramic Heater with High Thermal Conductivity and Clean, Non-Contaminating Material
St. Louis - Watlow, a St. Louis-based provider of thermal solutions, introduces its ULTRAMIC® advanced ceramic heater. The high thermal conductivity aluminum nitride (AIN) ceramic composition is paired with a proprietary, thermally matched, heating element to enable a fast responding heater configured in a low mass package.
"Watlow's R&D team developed the ULTRAMIC heater to meet the requirements found in chip testing and die bonding applicatons," said Dr. Hongy Lin, principal scientist. "Numerous hours of life testing and development of proprietary techniques and practices have made all of this possible."
With high thermal conductivity, it enables the ULTRAMIC heater to be constructed with a high watt density, giving it the ability to ramp as fast as 150°C (270°F) per second. This also allows for fast cooling.
The construction technique of the ULTRAMIC heater is to sinter the ceramic at elevated temperatures to create a monolithic, geometrically stable structure. The result is a very low porosity, homogeneous, robust heater assembly that provides the necessary heat transfer for high temperature and long heater life.
Constructing an electric heater using sintered ceramic materials provides many benefits including high dielectric strength, a leakage current of less than 10 µA, uniform temperatures, high durability at low mass, a rapid ramp rate and an extremely low coefficient of thermal expansion.
Watlow's ULTRAMIC heater can operate up to 752°F (400°C) depending on the application, heater design and process parameters. This heater also contains a unique (patent pending) integrated thermocouple configuration that improves the reliability of the sensor/heater interface to ensure fast responsiveness during high ramp rate applications.
Watlow's ULTRAMIC heater is available in either rectangle or ring forms and can be machined to meet specific design requirements including holes, vacuum grooves or ultra-fine surface finishes.
Since the company's founding in 1922, Watlow has brought its thermal expertise to numerous applications, including power generation, semiconductor, plastics processing, foodservice equipment, life sciences, aerospace and others. Headquartered in St. Louis, Missouri, Watlow is the largest custom designer and manufacturer of industrial heaters, sensors, controllers and software with offices and manufacturing facilities around the world.
User comments about this story
May I ask some question about metallization on AlN
I did not know a heating element of your product.
I am interested in metallization of Moly-manganese paste on AlN substrate.
Untilnow, I have some problme to apply our compstion of Moly-manganese on AlN.
So if you have any product or idea to solve these problem, please let me know.
thank you for your concerns.
Geunhoi, Gu on Dec 12, 2011 01:32
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