Silicon carbide, mainly consisting of SiC, also known as carborundum, is a hard chemical compound containing silicon and carbon.
Download PDF碳化硅(SIC)是一种轻巧的陶瓷材料,具有与钻石相当的高强度特性。
它具有出色的导热率,低热膨胀,是酸的结构。碳化硅陶瓷非常适合需要良好的侵蚀和磨蚀性的应用。因此,它在多种应用中很有用,包括喷嘴,射击喷嘴,陶瓷管和旋风分子组件。
我们产生烧结的SIC管,反应键合的SIC管和重结晶的SIC管。我们的重结晶SIC产物具有很高的纯度,而我们的反应结合和烧结的碳化硅管具有很高的机械强度。我们的碳化硅管具有良好的可穿戴能力,低热膨胀系数,极端耐腐蚀性,耐磨性,耐热性电击性,高硬度和自润滑性能。必威体育哪个是真的
物品 | Recrystallized SiC | Sintered SiC | Reaction Bonded SiC |
Purity of Silicon Carbide | 99.5% | 98% | > 88% |
最大限度。工作温度。(`c) | 1650 | 1550 | 1300 |
散装密度(g/cm3) | 2.7 | 3.1 | > 3 |
外观孔隙率 | < 15% | 2.5 | 0.1 |
弯曲强度(MPA) | 110 | 400 | 380 |
Compressive strength (MPa) | > 300 | 2200 | 2100 |
热膨胀(10^-6/`c) | 4.6 (1200℃) | 4.0(<500℃) | 4.4(<500℃) |
Thermal conductivity (W/m.K) | 35〜36 | 110 | 65 |
主要特征 | High temp. High resistance. High purity |
Fracture Toughness | 耐化学性 |
碳化硅(SIC)陶瓷具有一组独特的物理化学特性,例如高温下的高硬度和机械稳定性,出色的热导率和低热膨胀系数,高耐腐蚀和氧化,宽带范围等。必威体育哪个是真的
Reaction Bonded SiC has the lowest cost production technique with a course grain. Reaction Bonded SiC provides somewhat lower hardness and use temperature, but higher thermal conductivity. Reaction bonded silicon carbide has high strength, high hardness, hig abrasion resistance, high temperature resistance, corrosion resistance, good oxidation resistance, good thermal shock resistance, good thermal conductivity, rapid cooling and rapid heat resistance and high temperature creep resistance, etc. It can be made into beam, roller, cooling air pipe, thermocouple protection pipe, temperature measuring pipe, burner nozzle, wear-resisting parts, corrosion-resisting parts, sealing parts and a variety special-shaped structural parts.
Compared with reaction bonded silicon carbide, pressureless sintered silicon carbide has higher purity, better mechanical properties, more prominent corrosion resistance ( Resistantto strong acid and alkali corrosion, It is also the only ceramic material which can resistant to hydrofluoric acid corrosion ), higher wear resistance, because of there’s no free silicon in the material can be used in other materials can not meet the environment, longer service life.
At present, the use of our company’s high wear-resistant ceramic lined steel pipe dozens of thermal power plant practice shows that: ceramic lined steel pipe anti-wear ability, anti-fluid erosion ability.
And it has developed rapidly. When transporting the materials with the harder abrasion (such as ash dregs, slag, coal powder, mining dregs, the rest mines, cement, etc), it will exit the problem that the abrasion of pipes is too rapid. Especially, the abrasion of bent pipes is greatly more rapid.
在运输特殊的磨损材料或侵蚀材料时,它将消除管道损坏太快的问题。
SIC陶瓷衬里的管道和传统的钢管,耐磨性的合金铸钢管,铸石管和钢,钢和其他橡皮管本质上不同。陶瓷衬里的管道是钢的外层,内层是RBSIC陶瓷。MOH的硬度高达13。耐药性比碳钢管高30倍以上。
In a duct, the elbow wear the fastest, in practice, Ceramic lined pipe used after 1 to 2 years to open the observation and measurement, the composite layer are no obvious wear or tear off, ceramic-coated steel pipe wear Than the thick-walled wear-resistant cast steel pipe increased by nearly 10 times.
碳化硅(SIC)是一种轻巧的陶瓷材料,具有与钻石相当的高强度特性。它具有出色的导热率,低热膨胀,并且对酸性腐蚀具有抗性。
碳化硅是一种出色的陶瓷材料,适用于需要耐腐蚀性和耐磨损性的应用。
碳化硅(SIC)陶瓷具有一组独特的物理化学特性,例如高温下的高硬度和机械稳定性,出色的热导率和低热膨胀系数,高耐腐蚀和氧化,宽带范围等。必威体育哪个是真的
盔甲
碳化硅碳化硅在复合装甲保护系统中作为陶瓷材料表现出了出色的性能记录。当面对高速弹丸时,烧结的碳化硅的性能,例如其高硬度,抗压强度和弹性模量,可提供出色的弹道能力。材料的低特异性密度使其适用于重量需求至关重要的应用。
Heat Exchanger Tubes
化学过程行业的壳和管热交换器中使用烧结的碳化硅管。这些应用中使用的管通常长度超过4 m。
机械密封
Pumps must operate in an infinite variety of demanding environments. Sintered Silicon Carbide offers a high performance seal face material that has proven successful in such diverse pumping applications as chemical processing, refining, mining and pulp and paper processing. The material provides superior corrosion and abrasion resistance; shock resistance; and low sliding friction against a wide range of mating materials.
Bearings
的最先进的magnetically driven pumps, sintered silicon carbide is particularly suited for thrust and journal bearing components. Excellent corrosion resistance provides optimum performance in many chemical environments. High thermal conductivity minimizes the likelihood of failure due to thermal shock, and its specific strength makes it safe to use at high rotational speeds. Bearing components are usually produced as tight tolerance precision ground parts.
Automotive Components and Seal Faces
由于它们对磨损和热休克的耐药性更大,因此烧结的碳化硅密封面用于汽车水泵,它代替了由氧化铝等材料制成的密封面。在许多情况下,该材料已被证明更适合满足美国和欧洲车辆的性能需求 - 即持续车辆的寿命而不会泄漏。这些组件是通过常规的大量压力和注入模制来制造的,以满足应用程序的经济限制。
爆炸和雾化喷嘴
Sintered Silicon Carbide is probably the most popular ceramic alternative to tungsten carbide for blast nozzle applications. Typically providing long life (50% over WC) due to excellent wear and corrosion resistance. The low wear rate maintains the internal nozzle geometry and provides maximum blasting effectiveness, minimum compressor requirements and reduced downtime due to replacement. Sintered silicon carbide is also about one fifth the weight of Tungsten Carbide, so the blasting operation is also easier for the operator. Nozzles are often produced as semi finished (non-ground) components thereby reducing costs.
Process Industry Valve Applications
烧结的碳化硅的出色耐腐蚀性,尤其是在酸中,使其成为阀门和阀饰量应用的理想候选者。典型的苛刻应用,例如浆液闪烁,HF酸处理和稀土加工,使用烧结的碳化硅阀成分。
Paper Industry Applications
The excellent corrosion and wear resistance of sintered silicon carbide provides hard surfaces that can be machined to smooth, highly polished finishes. These finishes offer low coefficients of friction and compatibility with forming fabrics. Tiles, inserts and palm guides are available in finished and semi-finished forms.
Centrifuge Tiles and Wear Parts
Often used in applications where tungsten carbide and alumina fail to provide optimum lifetime performance.
Semiconductor Production
The benefit of using silicon carbide for semiconductor components includes; the thermal expansion match to silicon, the resistance to wear and chemical corrosion which leads to reduced maintenance and component recycling. The material is well suited as a structural material for low mass silicon wafer handling components and rigid, dimensionally stable platforms due to its lightness in weight and high elastic modulus. Typical applications include vacuum chucks, chemical mechanical polishing blocks, wafer carriers, and thermocouple protection tubes.
碳化硅陶瓷不仅在行业,而且在其他领域都广泛使用。那么,使用碳化硅陶瓷时应该注意什么?
碳化硅陶瓷的硬度非常强大,尽管它看起来不像其他陶瓷那样引人注目,但是装饰陶瓷的使用是无与伦比的。在使用过程中,只要您遵循说明,就无需特别注意。只要保持清洁。
If the method used is not correct, the silicon carbide ceramics will be damaged. We can extend its service life by regular maintenance.
仔细处理我们的碳化硅管和固定装置,以最大程度地减少存储和运输过程中的损坏,并在其原始状态下保留产品的质量。我们保证在运输,装载和卸载过程中完整完整,并采取措施减少振动和影响,以确保在运输过程中产生产品的完整性。
Our Silicon Carbide Tubes (SiC Tubes) are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
典型的碳化硅特征包括:
Typical silicon carbide applications include:
与高温行为相比,它们在低温下使用更多的磨损操作。SIC的应用是诸如使用高硬度,耐磨性和硅碳化物耐腐蚀性的喷砂喷油器,汽车水泵密封,轴承,泵组件和挤压模具。
冶金和电力行业原因:这两个行业together is mainly because the two industries have a large number of metal pipes for the transmission of coal powder, ash, mud, and the like. After using the wear-resistant elbow pipe, the advantages of strong wear resistance, long life and easy installation are immediately highlighted.
Mining industry: If the wear-resistant elbow pipe is not used, the ordinary pipe is used for the transportation of the ore powder. Due to the filling of the mine and the transportation of the concentrate powder, the wear of the pipe is relatively large, so that the life of these pipes is only about one year. After wearing elbow pipes, the life of such pipes will be extended by a factor of five.
Coal industry:如果需要煤的长距离湿运输,则管道具有良好的耐磨性和高腐蚀性的要求,并且具有耐磨损的肘部管道可以很好地满足这些要求。
Silicon carbide, mainly consisting of SiC, also known as carborundum, is a hard chemical compound containing silicon and carbon.
稀土合金耐磨管has the characteristics of fast velocity and high flow rate.
The ceramic sleeves lined pipe as a whole part, and then assemble it into the steel pipe with our high-strength-temperature-resistant epoxy adhesive.
陶瓷瓷砖衬里的管道和弯曲是用模具消失的真空吸力铸造过程铸造的。
铸玄武岩是一种产生和加工后的硅酸盐结晶材料
陶瓷衬里的管道是通过自传播高温合成(SHS)技术制造的。
Bimetal clad pipe is cast with mold vanishing vacuum suction casting cladding process.
试管侵蚀罩用于保护锅炉管免受高温的高度侵蚀作用。
UHMWPE非常适合需要高耐磨性和低摩擦的管道应用。