Atmospheric pressure sintered silicon carbide has high application advantages and broad market development prospects

Atmospheric pressure sintered silicon carbide, also known as pressureless sintered SiC, refers to the use of powder metallurgy manufacturing methods, using sub-micron silicon carbide particles as raw materials, and using boron, carbon, etc. as sintering aids, without applying external pressure. High-performance silicon carbide ceramic made of densified sintering. According to the different forms of sintering aids, atmospheric pressure sintered silicon carbide can be divided into two categories: atmospheric pressure solid phase sintered silicon carbide and atmospheric pressure liquid phase sintered silicon carbide.

In addition to atmospheric pressure sintering, silicon carbide sintering processes also include hot press sintering, reaction sintering, hot isostatic pressing sintering, etc. However, atmospheric pressure sintered silicon carbide has the highest hardness, best corrosion resistance, and longest service life among all silicon carbide types. A long category. At the same time, atmospheric pressure sintered silicon carbide also has the characteristics of light weight, high rigidity, high strength, low thermal expansion coefficient, good wear resistance, good thermal shock resistance, and very low free silicon and free carbon content. It is widely used in semiconductors, machinery, and abrasive tools. , chemical industry, papermaking, oil refining and other fields have higher application advantages and good market development prospects.

In the semiconductor field, atmospheric pressure sintered silicon carbide can be used in manufacturing scenarios such as single crystal substrates, epitaxial wafers, and module packaging; in the mechanical field, it can be used to seal magnetic drive pump bearing components, mechanical seal rings, sandblasting nozzles, bulletproof sheets and other parts. In the component manufacturing scenario, downstream products have the advantages of higher sealing and longer service life; in the chemical industry, it can be used in manufacturing scenarios such as chemical pump sealing rings and high-temperature ultra-thin kiln furniture.

According to the“2023-2028 Atmospheric Pressure Sintered Silicon Carbide Industry Market In-depth Research and Investment Prospects Forecast Analysis Report” released by the Industrial Research Center span>It shows that as a type of high-performance material with wide application, the market size of silicon carbide is constantly expanding, and its global market size will reach US$760 million in 2022. In recent years, as the advantages of atmospheric pressure sintered silicon carbide have been continuously highlighted and related technical levels have been continuously improved, it is gradually replacing reaction sintered silicon carbide as the mainstream product in the silicon carbide market, and the industry development trend is good.

Globally, the companies that are developing the atmospheric pressure sintered silicon carbide market mainly include international companies such as France’s Saint-Gobain and the United States’ TTK Technology, as well as Weifang Shengrun Special Ceramics, Weifang Xinhong Special Ceramics, Nantong Sanzhi Precision Ceramics, Yantai Asus Precision Ceramics, and Shanghai Zhongke Chinese companies such as Yicheng New Materials, Ningbo Vulken Technology, Shandong Jinhong New Materials, Shanghai Debao Seals, Shanghai Asus Fine Ceramics, etc.

Industry analysis personnel said that atmospheric pressure sintered silicon carbide is one of the subdivisions of silicon carbide. High-performance silicon carbide ceramics prepared through atmospheric pressure sintering (pressureless sintering) process have higher application advantages in semiconductor, chemical industry, machinery and other fields, and have good market development prospects. At present, there are a large number of silicon carbide manufacturers in my country, but most of them still focus on the production of reaction sintered silicon carbide. The number of atmospheric pressure sintered silicon carbide companies is still relatively small, and there is still a lot of room for development in the industry in the future.