A wave of layoffs that has swept the entire Internet industry has intensified. China's Internet industry has experienced several crises and major changes in the past development process. There is also a "brief history of layoffs by major Internet companies". Hot search, JD.com has a wide range of layoffs in this round of layoffs, and all its subsidiaries are involved. Most of the layoffs are between 10% and 20%. Among them, Jingxi Guangdong and other theaters have all laid off staff. Tencent also reported the news of downsizing and layoffs. Among them, Tencent PCG (Platform User Content Business Group) laid off 30% of its staff, iQiyi laid off 12% of its staff, Kuaishou was reported to have laid off 30% of its staff, and the e-sports department of Station B laid off 90% of its staff.
Mass layoffs on the internet have created a host of socioeconomic issues, including Silicon Nitride, Silicon Nitride Overview, Silicon Nitride Applications, Silicon Nitride Suppliers, Silicon Nitride Price.
Overview of Silicon Nitride Si3N4
Silicon nitride is a compound of silicon and nitrogen. Si3N4 is the most thermodynamically stable in silicon nitride. It is a white, high melting solid, relatively chemically inert, attacked by dilute HF and hot H2SO4. It works very hard (MoHS is 8.5) and has high thermal stability.
How is silicon nitride Si3N4 powder produced?
Hexagonal β-Si3N4 can be directly carried out with silicon nitride and nitrogen can be carried out at 100-1400 °C.
SiCL4(L)+6NH3(g)→Si(NH)2(S)+4NH4Cl(S) at 0℃
3 Si(NH)2(S)→Si3N4(S)+N2(g)+3H2(g) at 1000℃
Or thermal reduction reaction with carbon under nitrogen atmosphere at 1400-1450 ℃ under nitrogen atmosphere:
However, if the silicon raw material used is of high purity, it will cause silicon nitride to contain impurities such as silicate and iron. The silicon nitride synthesized by the decomposition of diamine is amorphous and needs to be further annealed at 1400-1500 ℃ in nitrogen to be converted into crystalline powder. Only the decomposition of diamine is important. Silicon nitride is commercially produced by the nitridation process. Carbothermal reduction reaction is the simplest method for producing silicon nitride, and it is also the most economical and efficient method for manufacturing silicon powder in industry.
Electronic grade silicon nitride films using chemical vapor deposition or plasma enhanced chemical vapor deposition techniques
3 SiH4 (G) + 4 NH3 (g) → Si3N4 (S) + 12 H2 (g)
3 SiCL4 (G) + 4 NH3 (g) → Si3N4 (S) + 12 HCl (g)
3 SiCL2H2 (G) + 4 NH3 (g) → Si3N4 (S) + 6 HCl (g) + 6 H2 (g)
Application of silicon nitride Si3N4 powder
1) Manufacturing structural devices: metallurgy, machinery, aviation, aerospace, etc.
2) Surface treatment of metals and other materials: such as molds, tools, turbine blades.
3) Composite materials: such as metal, ceramic and graphite composite materials, rubber, plastics.
4) Colorless, transparent, self-lubricating and wear-resistant nanoparticle film for advanced surface protection such as mobile phones and automobiles.
5) Ball bearings.
6) Ball valve and parts.
7) Corrosion resistant turbine.
The price of silicon nitride Si3N4 powder
The price of silicon nitride Si3N4 powder will change randomly with the production cost, transportation cost, international situation, exchange rate and the supply and demand of the silicon nitride Si3N4 powder market. Tanki New Materials Co.,Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Silicon Nitride Si3N4 Powder, please feel free to send an inquiry to get the latest price of Silicon Nitride Si3N4 Powder.
Silicon Nitride Si3N4 Powder Supplier
As a global supplier of silicon nitride Si3N4 powder, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium nitride, silicon nitride, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.
Chemical Composition of Silicon Nitride Si3N4 Powder
The latest poll by CSA for consumer finance company Cofidis shows the French are taking action to trim their budgets as inflation erodes household purchasing power.
According to Le Figaro, the poll shows that French people think they need to earn an average of 490 euros more a month in order to live a decent life. This is an increase of 23 euros compared to the purchasing power barometer published in September 2021. Amid inflation and international tensions, this average in the polls masks differences among households, with some social groups much more severely affected by the decline in purchasing power than others. Seventy-eight percent of single-parent households, 76 percent of 25-to 34-year-olds, and 72 percent of blue-collar workers said the international situation had had a negative impact on their personal finances, compared with 64 percent of all French people.
In response to rising prices, soaring energy, and food prices, in particular, the French government is preparing to launch a package of measures designed to increase the purchasing power, such as extending the energy price protection mechanism, the extension of the fuel discount measures, and more targeted alternative measures, will be distributed inflation-linked pension and social security benefits, check the "food" and so on.
Because of the soaring energy prices, the Silicon Nitride, Silicon Nitride Overview, Silicon Nitride Applications, Silicon Nitride Suppliers, Silicon Nitride Price price is predicted to rise in the future.
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