Good quality Refractory Alumina /Ceramic /Carbon Sulfur /Graphite /Clay Melting Crucible

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Ningbo VET Energy Technology Co., Ltd. is a high-tech enterprise established in China. We are a professional manufacturer and supplier of Graphite silicide products.


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We are proud of the superior customer gratification and wide acceptance due to our persistent pursuit of top of the range both of those on merchandise and service for Good quality Refractory Alumina /Ceramic /Carbon Sulfur /Graphite /Clay Melting Crucible, Our main objectives are to offer our buyers globally with high quality, competitive cost, glad delivery and exceptional solutions.
We are proud of the superior customer gratification and wide acceptance due to our persistent pursuit of top of the range both of those on merchandise and service for China Crucible and Ceramic Crucible, We are going to initiate the second phase of our development strategy. Our company regards “reasonable prices, efficient production time and good after-sales service” as our tenet. If you are interested in any of our solutions or would like to discuss a custom order, make sure you feel free to contact us. We have been looking forward to forming successful business relationships with new clients around the world in the near future.

Siliconized graphite is a composite material in which silicon carbide is attached to the surface of a graphite substrate. It has the characteristics of high hardness, high mechanical strength and wear resistance of silicon carbide, as well as the self-lubricating properties and thermal shock resistance of graphite. It is an ideal friction materials and mechanical seal materials, suitable for mechanical sealing of various water pumps, oil pumps, chemical pumps, and bearings of various high-speed and high-load main pumps. In addition, siliconized graphite has good oxidation resistance, thermal shock resistance, low porosity, and certain electrical conductivity, and can be used as materials such as metal smelting crucibles and draft tubes.

Siliconized Graphite (1)

The composition of siliconized graphite is uniform, the surface is consistent with the inside, and the composition ratio of silicon carbide and graphite is adjustable. The higher the content of silicon carbide, the greater the density of the material, the higher the compressive strength, and the resistivity increases.

图片1

Metallographic picture of siliconized graphite

(the black part is graphite, the gray part is silicon carbide, and the white part is silicon)

硅化石墨主要技术指标
Main parameters of Siliconized graphite

类别 Item 指标 Value
密度 Density 2.4-2.9g/cm³
孔隙率 Porosity <0.5%
抗压强度Compressive strength >400MPa
抗折强度 Flexural strength

Flexural strength

>120MPa
热导率 Thermal conductivity 120W/mK
热膨胀系数Thermal expansion coefficient 4.5×10-6
弹性模量Elastic modulus 120GPa
冲击强度Impact strength 1.9KJ/m²
水润滑摩擦系数 Water lubricated friction 0.005
干摩擦系数Dry friction coefficient 0.05
化学稳定性

Chemical stability

各种盐,有机溶剂,强酸(HF,HCl,H₂SO4,HNO₃)

Various salts, organic solvents,

strong acids (HF,HCl,H₂SO4,HNO₃)

长期稳定使用温度

Long-term stable use temperature

800℃(氧化气氛), 2300℃(惰性或真空气氛)

800℃(oxidizing atmosphere),

2300℃(inert or vacuum atmosphere)

电阻率 Electrical resistivity 120×10-6Ωm

We are proud of the superior customer gratification and wide acceptance due to our persistent pursuit of top of the range both of those on merchandise and service for Good quality Refractory Alumina /Ceramic /Carbon Sulfur /Graphite /Clay Melting Crucible, Our main objectives are to offer our buyers globally with high quality, competitive cost, glad delivery and exceptional solutions.
Good quality China Crucible and Ceramic Crucible, We are going to initiate the second phase of our development strategy. Our company regards “reasonable prices, efficient production time and good after-sales service” as our tenet. If you are interested in any of our solutions or would like to discuss a custom order, make sure you feel free to contact us. We have been looking forward to forming successful business relationships with new clients around the world in the near future.


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