강렬한 열과 가혹한 환경을 견딜 수 있는 소재의 경우, 내화 등급 탄화붕소의 기능과 일치할 수 있는 제품은 거의 없습니다.. 이 뛰어난 세라믹 화합물은 열에 대한 내성이 있는 산업에서 중요한 틈새 시장을 개척했습니다., 화학적인, 기계적 스트레스가 가장 중요합니다..

내화 등급 붕소 탄화물이란 무엇입니까??

탄화붕소 (B4C) is an incredibly hard and lightweight covalent ceramic material renowned for its refractory properties. 그만큼 “refractory grade” designation refers to a highly purified form that exhibits superior performance at extreme temperatures compared to standard industrial grades.

The unique atomic structure of boron carbide, with its strong covalent bonds and highly cross-linked rhombohedral lattice, endows it with remarkable thermal stability and hardness, second only to diamond and cubic boron nitride. This makes it an ideal candidate for applications where durability and heat resistance are critical.

Application of Boron Carbide in Harsh Environments

Refractory grade boron carbide finds extensive use in industries that push the limits of materials science.

1. 항공우주 및 국방
   The aerospace and defense sectors rely heavily on refractory grade boron carbide for its ability to withstand the intense heat and abrasion encountered in rocket nozzles, leading edges of hypersonic vehicles, and armor plating for military vehicles and personnel.
2. Nuclear Industry
   그만큼 원자력 산업 benefits from the exceptional neutron absorption properties of boron carbide, making it an essential component in nuclear reactors, 제어봉, and shielding materials.
3. Metallurgy and Foundry Operations
   In metallurgy and foundry operations, refractory grade boron carbide is used to line furnaces, 도가니, 및 기타 고온 장비, ensuring prolonged service life and resistance to molten metal corrosion.
4. 연마재 및 절단 도구
   탄화붕소는 경도가 매우 높아 연삭에 탁월한 연마재입니다., 랩핑, 및 폴리싱 애플리케이션, 내마모성 절삭 공구 및 드릴 비트 제조에도 사용됩니다..

탄화붕소의 놀라운 특성

내화 등급 탄화붕소의 탁월한 성능은 고유한 특성 조합에 기인합니다.:

고융점 (2,450°C / 4,442°F)

탄화붕소는 비산화물 세라믹 중 녹는점이 가장 높은 것 중 하나입니다., allowing it to retain its structural integrity and mechanical properties at temperatures where most materials would fail.

높은 경도 (9.3 – 9.8 모스 척도에서)

With a hardness surpassed only by diamond and cubic boron nitride, refractory grade boron carbide is incredibly resistant to abrasion, 입다, and erosion, even under extreme conditions.

저밀도 (2.52 g/cm³)

Despite its exceptional hardness, boron carbide has a relatively low density, making it an attractive lightweight option for applications where weight is a critical factor, such as aerospace and defense.

높은 열전도율

Boron carbide’s high thermal conductivity allows for efficient heat dissipation, making it suitable for applications involving intense thermal cycling or high heat flux.

화학적 불활성

Refractory grade boron carbide exhibits excellent chemical inertness, resisting attack from various molten metals, slags, and aggressive chemical environments.

중성자 흡수

Boron-10, a naturally occurring isotope of boron, has a high cross-section for absorbing thermal neutrons, making boron carbide an essential material in nuclear applications for control rods and shielding.

Boron Carbide for Magnesium-carbon Bricks

Boron carbide is used as an antioxidant additive in low carbon magnesium-carbon bricks and castables. In the iron and steel industry is used in the key parts of high temperature resistance and scouring resistance. Such as ladle, iron outlet (water outlet), slide plate, plug bar and so on. With the iron and steel industry energy saving and smelting of low carbon steel, ultra-low carbon steel needs, research and development of excellent performance of low carbon magnesium carbon bricks (carbon content is generally ﹤8 ﹪) is increasingly by the domestic and foreign industry’s attention.

현재, the performance of low carbon magnesium carbon bricks is generally improved by improving the combined carbon structure, optimizing the matrix structure of magnesium carbon bricks, increasing efficient antioxidants and other measures to improve the performance of low carbon magnesium carbon bricks, 공업용 B4C와 흑연화 카본블랙으로 구성된 흑연화 카본블랙 복합분말의 일부를 사용하는 것, 저탄소 마그네슘 탄소벽돌의 탄소원 및 항산화제로 사용되는 물질입니다., 그리고 아주 좋은 결과를 얻었습니다. B4C가 첨가된 저탄소 마그네슘 탄소 벽돌은 기존의 우수한 물리적 특성을 가지고 있습니다., 항산화 및 열충격 안정성.

형질

Boron carbide in carbon refractory materials in the role of antioxidant can make the product densification to prevent the oxidation of carbon in carbon refractory materials at the same time in the 1000 ℃ ~ 1250 ℃ reaction occurs, the generation of (9AL2O3-2B2O3) columnar crystals distributed in the refractory matrix and interstitial space, thus reducing the porosity, improve the strength at medium temperature, and the generation of crystals volume expansion, can heal the volume contraction, reduce cracks.

결론

Refractory-grade boron carbide is a highly durable, versatile, and effective material for applications in extreme environments. From industrial furnaces and nuclear reactors to abrasive tools and chemical processing plants, boron carbide provides essential advantages in terms of hardness, 열 안정성, 내식성, 중성자 흡수.

허난 우수한 연마재 (HSA) 붕소 탄화물 전문 공급 업체입니다, 탄화규소 중국의 기타 연마재. 필요한 사항이 있으시면, 언제든지 연락 주시기 바랍니다!