Db Type Sic Heating Element
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Product Specifications
| Features | Antioxidant Property, Longer Life, Stable Oxidation, High Strength, Heat Conductivity |
Product Overview
Key Features
Density: 2.5 +/-0.1 g/cm3
Bending strength: 50 +/-10 Mpa at 20C
Porosity rate: 23 +/-2 %
Specific heat: 1.0 kj/kg.C at 20C~1300C
Heat conductivity: 14~19 W/m.C at 1000C
Linear expansion coefficient: 4.5 x 10^-6/C
Chemical Properties
1. Antioxidant property of elements
The element start to being oxidized when heat to 800? in air; a SiO2 protect film will be generated in surface of hot zone when temperature get to 1000~1300?; cristobalite will be crystallized at 1300?; the protect film get to a certain thickness when the temperature get to 1500? which make the oxidation speed being very slowly to stable. If continue to heat to over 1627?, the protect film will be damaged and oxidation speed will be more rapid evidently and make the element damaged earlier.
Thought the element will be oxidized very slowly in course of application, it also will make the resistance increased following long time application, this phenomenon calls ?ageing?. In order to lower the ageing speed, we use special technology to spread a protect film on the surface of hot zone in the course of production, which enhance the Antioxidant property of element evidently and lengthen the service life.
2. The effects of alkali and alkaline metal oxide to elements
The alkali & alkaline metal oxide will react with SiC at about 1300? and generate silicate, which calls alkali-chemical corrosion, and can influence the glowing of element.
3. Some metals, such as cobalt, nickel, chrome and so on,
Company Details
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Business Type
Exporter, Manufacturer, Distributor, Supplier, Trading Company
Employee Count
100
Establishment
1997
Working Days
Monday To Friday
Payment Mode
Telegraphic Transfer (T/T)
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Seller Details
RatingLiaoyang, Liaoning
Ceo
Mr Bai Ye David
Members since
2 Years
Address
No.231, Zhonghua Street, Liaoyang, Liaoning, 111000, China
silicon carbide heating elements in Liaoyang
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