Silicon Carbide Ceramic Tube

Gorgeous silicon carbide tubes are made of high-quality SiC and are available in a variety of custom purities and sizes.

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High Quality SiC Tube

カスタム加工サプライヤー

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With a Mohs hardness of 9, its high wear resistance extends its lifespan several times longer than metal pipes, significantly reducing the likelihood of replacements and downtime.
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Dual heat and corrosion resistance allows a single pipe to withstand extreme industrial environments (stable operation at high temperatures, capable of temporarily reaching 2000°C in an inert atmosphere).
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High thermal conductivity and low thermal expansion make it ideal for rapid heating or cooling applications.
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OEM customization is available, from small-batch trials to large-scale production (with a minimum order of one).

SiC Tube Description

GORGEOUS offers a variety of silicon carbide ceramic tubes, including sintered, reaction-bonded, and recrystallized silicon carbide tubes.

Reaction-bonded and sintered silicon carbide tubes offer superior mechanical strength and wear resistance, making them ideal for high-load and demanding applications. Recrystallized silicon carbide tubes, on the other hand, boast higher purity and high-temperature resistance, making them suitable for long-term, stable operation in extreme temperature environments.

 

Supply Various Shapes of Silicon Carbide Ceramic Tubes

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Silicon carbide ceramic tube with both ends open
Silicon carbide protection tube closed at one end
Square-shaped SiC ceramic tube
Customizable SiC shaped ceramic tube
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Supply Silicon Carbide Tubes for Various Purposes

GORGEOUS can customize various types of silicon carbide tubes for customers, including: protection tubes, high-temperature furnace tubes, filter membrane tubes, etc.

Standard Silicon Carbide Tube

Standard silicon nitride tubes, accept customization, can be shipped quickly, send a request to get a quote.

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SiC Thermocouple Protection Tube

Single-ended closed protection tube, specially designed for thermocouple protection, can be customized. Send your request to get a quote.

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Silicon Carbide Furnace Tube

It can be used in high-temperature furnaces and is designed for high-temperature environments. Send us your request to get a quote.

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Silicon Carbide Membrane Tube

For filtration and separation processes, choose a custom process based on your needs. Send us an inquiry to get a quote.

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Advantages of Silicon Carbide Ceramic Tubes

高硬度

耐腐食性

高い熱伝導性

耐高温性

Pressureless sintered Silicon Carbide

Ultrafine silicon carbide powder with a particle size of 0.5 to 1.0 µm is used as raw material, B4C-C is used as a sintering aid, the density of the extruded green body is optimized through solvent degreasing + two-step sintering process, and sintering is carried out under vacuum or argon protection.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥98.3
平均粒径 - μm 4-10
密度 - kg/dm³ 3.00-3.10
見かけ多孔度 - Vol% ≤0.5
ビッカース硬度 - kg/mm2 2100-2300
3点曲げ強度 20℃ MPa 380-450
3点曲げ強度 1300℃ MPa 500-580
圧縮強度 20°C MPa 3800-4200
弾性係数 - GPa 410-440
破壊靭性 20°C MPa/m1/2 4.5-5.5
熱伝導率 20°C W/(m*K) 140-170
熱伝導率 1300℃ W/(m*K) 30-45
体積抵抗率 - Ω·cm 106 -108
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.5-5.2
最大動作温度 酸化雰囲気 ℃ 1700
耐食性 50%NaOH,100°C,15d Mg/(cm2 ·y) 0.5-1.0
耐食性 10%HF:65%HNO3=1:1,25°C,30d Mg/(cm2 ·y) 0.001-0.005
耐食性 10%HF:65%HNO3=1:1,100°C,30d Mg/(cm2 ·y) 0.8-1.2

Ultrafine silicon carbide powder (0.5–1.0 µm) is used as raw material, B4C-C is added as sintering aid, and green embryos are prepared by gel injection molding process. Silicon carbide powder is evenly mixed with monomers, crosslinking agents, water, dispersants, defoamers, toughening agents, pH regulators, retarders and other additives to make slurry, and then a catalyst is added to initiate polymerization to form a three-dimensional polymer skeleton, so that the powder can be locked in situ, and finally two-step degreasing (solvent degreasing + thermal degreasing) is performed, and pressureless sintering is performed under vacuum/argon protection.

パフォーマンス指標 状態 ユニット NumericSilicon Carbide Content
炭化ケイ素含有量 - % ≥98.0
平均粒径 - μm 3-8
密度 - kg/dm³ 3.03-3.10
見かけ多孔度 - Vol% ≤0.8
ビッカース硬度 - kg/mm2 2100-2300
3点曲げ強度 20℃ MPa 350-420
3点曲げ強度 1300℃ MPa 480-550
圧縮強度 20℃ MPa 3700-4100
弾性係数 - GPa 380-420
破壊靭性 20℃ MPa/m1/2 4.7-5.3
熱伝導率 20℃ W/(m*K) 150-170
熱伝導率 1300℃ W/(m*K) 30-45
体積抵抗率 - Ω·cm 106 -108
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.7-5.1
最大動作温度 酸化雰囲気 ℃ 1750

Ultrafine silicon carbide powder is used as raw material, compounded with less than 15% graphite material, formed by dry pressing and isostatic pressing, and sintered under vacuum or argon protection.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % 80-90
平均粒径 - μm 2.4-2.8
密度 - kg/dm³ 10000-1400
見かけ多孔度 - Vol% 8-15
ビッカース硬度 - kg/mm2 10000-1400
3点曲げ強度 20°C MPa 250-350
3点曲げ強度 1300℃ MPa 300-400
圧縮強度 20℃ MPa 2000-2500
弾性係数 - GPa 280-320
破壊靭性 20°C MPa/m1/2 3.0-4.0
熱伝導率 20°C W/(m*K) 100-150
熱伝導率 1300℃ W/(m*K) 50-80
体積抵抗率 - Ω·cm 5-200
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.0-5.0
最大動作温度 酸化雰囲気 ℃ 1100-1300

Silicon carbide submicron powder is used as raw material, and oxide is used as auxiliary agent system. It is formed by dry pressing or cold isostatic pressing and then sintered in liquid phase at 1800–2000 °C.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % 92
平均粒径 - μm 4-10
密度 - kg/dm³ 3.20-3.22
見かけ多孔度 - Vol% ＜0.8
ビッカース硬度 - kg/mm2 2200
3点曲げ強度 20°C MPa 550
圧縮強度 20°C MPa 3900
弾性係数 - GPa 400
破壊靭性 20°C MPa/m1/2 5
熱伝導率 20°C W/(m*K) 20-30
体積抵抗率 - Ω·cm (1-3)*108
熱膨張係数 (RT*-1300°C) ×10-6 /K 3.73-5.45
最大動作温度 酸化雰囲気 ℃ 1700

反応焼結シリコンカーバイド

Select extrusion grade silicon carbide powder of different particle sizes as raw materials, add carbon source, binder, emulsifier and other additives, mix, Knead, extrude, and then react and sinter. It is suitable for producing wires, pipes, plates, etc. with uniform cross-section and long sizes.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥83
密度 - kg/dm³ ≥3.03
見かけ多孔度 - Vol% ≤0.3
ビッカース硬度 - kg/mm2 2300
3点曲げ強度 20°C MPa 260
3点曲げ強度 1300℃ MPa 282
圧縮強度 20℃ MPa 3500
弾性係数 - GPa 360
破壊靭性 20℃ MPa/m1/2 3.5
熱伝導率 20℃ W/(m*K) 100
熱伝導率 1200℃ W/(m*K) -
体積抵抗率 - Ω·cm ＜100
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.2
最大動作温度 酸化雰囲気 ℃ 1350

Silicon carbide powder of different particle sizes is selected as raw material, organic carbon source and inorganic carbon source are introduced, and dispersed ball milling is carried out with deionized water, dispersant, binder, etc. The prepared silicon carbide slurry is injected into the designed gypsum mold and siliconized in a vacuum atmosphere at 1600–1700 °C. The free silicon content of the product is less than 15%.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥85
密度 - kg/dm³ ＞3.05
見かけ多孔度 - Vol% ≤0.5
ビッカース硬度 - kg/mm2 2572
3点曲げ強度 20°C MPa 290
圧縮強度 20℃ MPa 2322
弾性係数 - GPa 350
破壊靭性 20℃ MPa/m1/2 3.7
熱伝導率 20℃ W/(m*K) 100
熱伝導率 1200℃ W/(m*K) 33.5
体積抵抗率 - Ω·cm ＜100
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.6
最大動作温度 酸化雰囲気 ℃ 1350

Silicon carbide powders of different particle sizes are used as raw materials, different activated carbon sources are added as the second phase, and then dispersants, binders, pressure aids, etc., are added to make high-solid-phase slurry, which is molded and sintered by high-temperature reaction siliconization in a vacuum atmosphere. The free silicon content is 15–20%.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥85
密度 - kg/dm3 ＞3.05
見かけ多孔度 - Vol% ≤0.3
ビッカース硬度 - kg/mm2 2500
3点曲げ強度 20°C MPa 260
圧縮強度 20°C MPa 3500
弾性係数 - GPa 360
破壊靭性 20°C MPa/m1/2 3.5
熱伝導率 20°C W/(m*K) 200
体積抵抗率 - Ω·cm ＜100
熱膨張係数 (RT*-1300°C) ×10-6/K 3.14-4.66
最大動作温度 酸化雰囲気 ℃ 1350

様々な粒径の炭化ケイ素粉末を原料として、モノマー、架橋剤、水、分散剤、消泡剤、強化剤、pH調整剤、遅延剤などの添加剤と炭素源を混合した予混合液に直接添加し、触媒と開始剤で触媒作用を及ぼします。モノマー架橋剤は固化して三次元ネットワーク構造を形成し、セラミック粉末をゲルネットワークに閉じ込めます。このプロセスで製造された材料は、極めて高い曲げ強度と破壊靭性を有します。

Performance indicators 状態 ユニット 数値
炭化ケイ素含有量 - % ≥85
密度 - kg/dm3 ＞3.05-3.10
見かけ多孔度 - Vol% ≤0.3
ビッカース硬度 - kg/mm2 2200-2500
3点曲げ強度 20°C MPa 400-450
圧縮強度 20°C MPa 3000-3500
弾性係数 - GPa 380-420
破壊靭性 20°C MPa/m1/2 3.5-4.5
熱伝導率 20°C W/(m*K) 120-180
体積抵抗率 - Ω·cm ＜100
最大動作温度 酸化雰囲気 ℃ 1350

3D Printing Silicon Carbide Ceramics

Silicon carbide powder with different particle sizes is used as raw material, and is formed using a binder injection process. It is sintered at high temperature under vacuum or argon protection. The free silicon content is usually 10–30%.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥75
F.Si - % 10-25
密度 - kg/dm3 2.90-3.05
見かけ多孔度 - Vol% ≤1.0
ビッカース硬度 - kg/mm2 1800-2200
Three-Point Bending strength 20°C MPa 200-300
弾性係数 - GPa 280-320
破壊靭性 20°C MPa/m1/2 3.5-4.5
熱伝導率 20°C W/(m*K) 120-150
熱伝導率 1300℃ W/(m*K) 25-35
体積抵抗率 - Ω·cm 100
熱膨張係数 (RT*-1300°C) ×10-6 /K 4.0-4.8
最大動作温度 酸化雰囲気 ℃ 1350

Silicon carbide powders of different particle sizes (50–100 µm) are used as raw materials, and the raw materials are modified and formed by binder injection process, special reinforcement process, reaction sintering under vacuum or argon protection, and the free silicon content is less than 15%.

パフォーマンス指標 状態 ユニット 数値
炭化ケイ素含有量 - % ≥85%
F.Si - % <15%
密度 - kg/dm3 3.00-3.12
見かけ多孔度 - Vol% ≤0.3
ビッカース硬度 - kg/mm2 2400-2700
3点曲げ強度 20°C MPa 300-400
弾性係数 - GPa 330
破壊靭性 20°C MPa/m1/2 3.84
熱伝導率 20°C W/(m*K) 140-170
熱伝導率 1300℃ W/(m*K) 30-40
体積抵抗率 - Ω·cm 100
熱膨張係数 (RT*-1300°C) ×10-6/K 3.14-4.56
最大動作温度 酸化雰囲気 ℃ 1350

Silicon Carbide Tube Use

Pyrometallurgy & Metal Processing

Silicon carbide ceramic tubes can operate stably at high temperatures of 1400–1700°C for extended periods. As thermocouple protection tubes, they offer high thermal conductivity and fast temperature response, enabling more accurate temperature measurement. As furnace tubes, their corrosion resistance allows them to withstand the erosion of molten metal, slag, and chemical atmospheres.
Commonly used in:Thermocouple protection tubes, solution transmission tubes, furnace components

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Chemical and Corrosive Media Transportation

Silicon carbide tubes have excellent chemical inertness to almost all inorganic acids and alkalis, and will not peel or be contaminated due to long-term exposure to corrosive media.
Commonly used in:Corrosion-resistant pipes, reactor liners, high-pressure corrosive medium protection pipes

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Semiconductor & Solar Industry

High-purity silicon carbide material can prevent metal contamination of silicon wafers, and silicon carbide has strong thermal shock resistance and can withstand rapid temperature cycles.
Commonly used in:Wafer heat treatment furnace tubes, photovoltaic industry heating tubes and support tubes.

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Environment and Energy

Silicon carbide tubes can withstand long-term exposure to oxidizing, reducing, and mixed atmospheres, maintaining strength and structural stability in these extreme conditions. They are also used for transporting hazardous waste gases and liquids for high-temperature incineration.
Commonly used in:Incinerator tube、nuclear fuel cladding tube.

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Mechanical and Wear Parts

Silicon carbide has a Mohs hardness of nearly 9, making it second only to diamond in wear resistance. It can be used as a highly wear-resistant mechanical component, capable of long-term operation even in high-velocity fluids containing sand and solid particles. Common applications include various pump shafts and mechanical seals.
Commonly used in:Wear-resistant tube, wear-resistant linings, guide tube.

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MOQ について心配ですか?

少量生産のお客様のニーズにお応えするため、1個からの最小注文数量（MOQ）も承っております。まずはお気軽に当社のサービスをお試しください。

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GORGEOUSを選ぶ理由

GORGEOUS focuses on quality control to ensure that every alumina tube product meets customer requirements. Our quality inspection process is strict and meticulous. From raw materials to ceramic products, every step of the process is precisely inspected and tested.

In addition, GORGEOUS is a factory that has passed IATF16949:2016 automotive industry quality management system certification ISO9001:2015 quality management certification, which can provide customers with the best customized services.

パス成功例 お客様の声

We have worked with GORGEOUS more than once and the quality of the ceramic products they provide is excellent.

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James Walker

Technical Director

GORGEOUS's custom-made ceramic tubes are a perfect fit for our experimental setup.

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マイケル・アンダーソン

エンジニア

GORGEOUS is a reliable supplier of ceramic components. Our custom-made ceramic tubes were delivered on time, met all technical specifications, and integrated seamlessly into our components.

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David

Product Manager

よくある質問

What are the main benefits of using silicon carbide tubes?

GORGEOUS silicon carbide is inert to a wide range of corrosive chemicals, including strong acids and bases, and is temperature-resistant up to 200°C.
Silicon carbide tubing can replace most materials, such as graphite, metals, and alloys, which can introduce contamination over time due to corrosion. Other key advantages include high heat transfer, excellent mechanical strength, and low thermal expansion.

Types of SiC Tubes？

There are mainly reaction bonded SiC tubes, sintered SiC tubes, recrystallized SiC tubes, etc.

What are the advantages of SiC tubes?

Silicon carbide tubes have extremely high hardness (equivalent to diamond grade), excellent thermal shock resistance and thermal stability, strong chemical corrosion resistance, low thermal expansion coefficient, high heating/cooling efficiency, longer life, and low maintenance costs.

How to Choose the Right Type?

If you are looking for extreme corrosion resistance, then recrystallized SiC is recommended; if you want high mechanical strength, then sintered SiC is optional; if you need cost-effectiveness, you can consider reaction-bonded SiC.