Product Name: Zirconium Carbide (ZrC) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black Grey 
Features: High hardness, high temperature resistance, corrosion resistance, low thermal expansion system 
Usage: Aerospace, chemical, mechanical, industrial, scientific research, medical equipment and other fields

Zirconium carbide 

Molecular formula: ZrC 

Cas：12070-14-3 

Appearance: Black gray powder 

Molecular weight: 103.23 

Melting point: 3540 ° C 

Density: 6.73 g/cm ³ 

Hardness: Mohs hardness 8-9 

Electrical resistivity: (~43 μ Ω· cm) 

EINECS：235-125-1 

Chemical properties: insoluble in cold water and hydrochloric acid. Soluble in hydrofluoric acid and hot concentrated sulfuric acid containing nitric acid or hydrogen peroxide. Zirconium carbide powder has properties such as high temperature resistance, high hardness, good thermal conductivity, and good chemical stability. It is soluble in nitric acid, hot concentrated sulfuric acid, hydrofluoric acid, and aqua regia, and easily soluble in molten caustic alkali. 

Preparation method: 

1. Carbon thermal reduction method: Raw material: Zirconia (ZrO ₂) reacts with carbon (graphite or carbon black) at high temperature 

2. Chemical Vapor Deposition (CVD): ZrC coating is generated by reacting gaseous zirconium sources (such as ZrCl ₄) with hydrocarbons (such as CH ₄) at high temperatures 

3. Mechanical alloying: Zirconium powder and carbon powder are mixed by high-energy ball milling and heat treated to synthesize nanoscale ZrC 

4. Sol gel method: prepare precursor solution, dry and calcine to obtain high-purity ZrC powder. 

Main purpose: 

1. Application of zirconium carbide in fibers: Different contents and addition methods of zirconium carbide silicon carbide micro powder have an impact on the near-infrared absorption performance of fibers. When the content of zirconium carbide or silicon carbide in the fiber reaches 4% (by weight), the near-infrared absorption performance of the fiber is excellent. Adding zirconium carbide and silicon carbide to the shell layer of the fiber has a better near-infrared absorption effect than adding them to the core layer. 

2. Zirconium carbide is used in new insulation and temperature regulating textiles, insulation nylon and polyester fibers, temperature regulating fibers, heat storage and insulation polyester materials, insulation conjugated polyester fibers, sunlight heat storage and insulation finishing, Tai Chi steam lung vests, and aerospace technology heating materials; Significantly improve the strength and fatigue resistance of carbon fiber, enhance wear resistance and high temperature resistance, and apply it in the modification of aerospace carbon fiber materials. Zirconium carbide has the characteristics of efficient absorption of visible light and reflection of infrared radiation. When it absorbs short wavelength energy below 2 μ m, which accounts for 95% of sunlight, it can store the energy in the material through thermal conversion. It also has the characteristic of reflecting infrared wavelengths exceeding 2 μ m. Zirconium carbide has ideal heat absorption and storage properties, and the product can be applied to new insulation and temperature control textiles. 

3. Zirconium carbide is used in hard alloys, powder metallurgy, abrasives, etc.: Zirconium carbide is an important high-temperature structural material with high melting point, high strength, and corrosion resistance. Its excellent characteristics make it have great application space in hard alloys. It can improve the strength and corrosion resistance of hard alloys. 

4. Zirconium carbide can be applied to coatings as a high-temperature resistant coating to improve the surface properties of the material. 

5. Modifier for carbon carbon composite functional materials - zirconium carbide (ZrC): Used to modify carbon fibers can significantly improve their strength. Improve the fatigue resistance, wear resistance, and high temperature resistance of carbon fiber. The effect of modifying carbon fiber materials in aerospace applications is very significant. 

Zirconium carbide can be used in the nuclear fuel industry, electronic equipment protective films, superhard thin film materials, and high brightness electron emission films. Due to its low neutron absorption cross section and good radiation resistance, it can be used as an inert matrix material in nuclear reactors, such as nuclear fuel cladding materials. 

7. Low density loose zirconium carbide coating has good thermal stress resistance and insulation performance, and can be used as an insulation material. High density dense zirconium carbide coating has good penetration resistance and can be used as a protective coating. 

Storage method: This product should be sealed and stored in a dry and cool environment. It should not be exposed to air for a long time to prevent moisture from causing aggregation, affecting dispersion performance and usage effect. In addition, it should be avoided from heavy pressure and not in contact with oxidants. It should be transported as ordinary goods.