Tag : Silicon Nitride Ceramics

What is Concrete admixtures? Concrete admixtures, also known as concrete additives, is a chemical substance that is added in the process of mixing concrete, accounting for less than 5% of the cement mass, and can significantly improve the performance of concrete. The characteristics of concrete admixtures are many varieties and small dosage, which have a great influence on the performance of concrete, and have the characteristics of less investment, quick effect, and significant technical and economic benefits. With the continuous advancement of science and technology, concrete additives have been used more and more, and admixtures have become the fifth important component of concrete in addition to the four basic components. What are the types of concrete admixtures? If concrete admixtures are classified by function, there are five different classes of chemical admixtures: air-entraining admixtures, water-reducing admixtures, retarders, accelerators, and plasticizers (superplasticizers). What are concrete admixtures used for? Concrete admixtures are added to water-cement mixtures to extend the life of concrete, control setting and hardening, and fix the general properties of concrete. They can be powder or liquid additives. Concrete admixtures can be added at the point of manufacture or on the job site. Suppliers of concrete admixtures We are a professional supplier of concrete admixtures and can provide polycarboxylate superplasticizer, concrete accelerator, concrete foaming agent, concrete reinforcement, redispersible polymer powder, HPMC hydroxypropyl methylcellulose, PVA fiber, PP fiber, etc. Payment Term: T/T, Credit Card, Western Union, Paypal etc. Shipment Term: By courier, by air, by sea, by land, as customers request. Storage conditions: 1) Store in a dry environment at room temperature. 2) Avoid damp and high temperature. 3) Use immediately after opening the inner packing bag.

Comprehensive comparison and engineering application analysis of alumina, zirconia, silicon carbide and silicon nitride ceramics aluminum nitride cost

Material Overview Advanced architectural porcelains, because of their distinct crystal framework and chemical bond characteristics, reveal efficiency advantages that metals and polymer products can not match in extreme settings. Alumina (Al ₂ O FIVE), zirconium oxide (ZrO ₂), silicon carbide (SiC) and silicon nitride (Si two N ₄) are the four significant mainstream engineering ceramics, …

Application of Silicon Nitride Ceramics in Refractory Industry

Silicon nitride High strength especially when hot-pressed silica nitride. This is the hardest material in the world. It can withstand high temperatures without melting and maintains its strength up to 1200degC. It won’t melt in heat and it will not decay until 1900degC. It is extremely resistant to chemical corrosion. It is resistant to almost …

The Properties And Applications of Silicon Nitride Ceramics

Silicon nitride A synthetic material, ceramics can be described as such. Its covalent bond is strong between silicon atoms, nitrogen atoms. The silicon nitride clays exhibit high strength, high hardness and corrosion resistance. Material industry views silicon nitride as an engineering material. It can be used even in extremely high temperatures. Properties of silicon nitride-ceramics …