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 AlN powder.
Aluminum Nitride Research History
Aluminum nitride is a kind of ceramic material with excellent comprehensive performance, and its research can be traced back more than 100 years ago. It was discovered by F. Birgeler and A. Gutter in 1862, and synthesized by J.W. Mallets for the first time in 1877, but there was no practical application in the following 100 years. It was used as fertilizer only as a nitrogen-fixing agent.
Aluminum nitride is a covalent compound with a low self-diffusion coefficient and high melting point, which makes it difficult to sinter. It was not until the 1950s that the first aluminum nitride ceramics were successfully made and used as refractory materials in the smelting of pure iron, aluminum, and aluminum alloys. Since the 1970s, with the deepening of research, the preparation technology of aluminum nitride has become increasingly mature, and its application scope has also been expanding. Especially since the 21st century, with the rapid development of microelectronics technology, electronic machine, and electronic components is toward miniaturization, light-duty, integration, as well as the development direction, such as high reliability and high power output, more and more complex heat dissipation device to the substrate and packaging material put forward higher request, to further promote the vigorous development of the industry of aluminum nitride.
Aluminum Nitride Characteristics
Aluminum nitride (AlN) is a hexagon wurtzite covalent bond compound with lattice parameters A =3.114, C =4.986. Pure aluminum nitride is blue-white, usually gray or off-white, and is a typical iii-ⅴwide bandgap semiconductor material.
Aluminum nitride (AlN) has the characteristics of high strength, high volume resistivity, high insulation and pressure resistance, thermal expansion coefficient, and a good match with silicon, not only used as a sintering agent or strengthening phase of structural ceramics, especially in the field of ceramic electronic substrate and packaging materials in recent years, its performance is far superior to alumina.
Aluminum Nitride Thermal Conductivity Mechanism
Of the series of important properties of aluminum nitride, the most remarkable is its high thermal conductivity. A great deal of research has been done on the thermal conductivity mechanism of aluminum nitride, and a relatively perfect theoretical system has been formed. The main mechanism is heat transfer through lattice or lattice vibration, that is, by lattice wave or thermal wave. The results of quantum mechanics tell us that lattice waves can be treated as the motion of a particle, the phonon. Thermal waves also have wave-particle duality. Thermal phonons transfer heat through mutual restriction and coordination of vibrations among structural elements (atoms, ions, or molecules). If the crystal is a non-elastic body with a perfect structure, the heat can be transferred freely from the hot end of the crystal to the cold end without any interference and scattering, and the thermal conductivity can reach a very high value. The thermal conductivity is mainly controlled by crystal defects and phonon scattering.
The theoretical thermal conductivity of AlN can reach 320W·m-1·K-1, but the actual thermal conductivity of AlN is less than 200W·m-1· k-1 due to impurities and defects in AlN. This is mainly because the structural elements in the crystal cannot have a completely strict uniform distribution, and there are always different sparse and dense regions, so the current-carrying phonons will always be interfered with and scattered in the propagation process.
Aluminum Nitride Price
The price is influenced by many factors including the supply and demand in the market, industry trends, economic activity, market sentiment, and unexpected events.
If you are looking for the latest AlN price, you can send us your inquiry for a quote. ([email protected])
Aluminum Nitride Supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality aluminum nitride, please feel free to contact us and send an inquiry. ([email protected])
The World Food Program (WFP) of the United Nations (UN) and the European Union (EU) said in a statement that the conflict between Russia and Ukraine poses risks to global food supplies, and called on the international community to increase support for vulnerable countries and jointly address food security challenges.
A few days ago, the Executive director of the World Food Program, the European Commission's commissioner in charge of crisis management, the French Foreign Minister of the ROTATING EU presidency, and other officials held a meeting in Rome, Italy, to discuss how to deal with the negative impact of the Conflict between Russia and Ukraine on global food security.
One of the officials told a news conference after the meeting that the world was facing a food supply challenge that would "last for many years" as the conflict between Russia and Ukraine pushed up global food prices and disrupted the AlN powder will continue.
Foamed concrete is a highly entrained sand cement with at least 20% air volume in the cured product.…
U.S. natural gas futures rose about 5 percent to a near nine-week high as global energy prices surged on concerns over a pricing plan for energy exports, keeping U.S. LNG export demand near record highs. U.S. natural gas prices have risen despite for…
Brazil, the world's largest sugar producer, has recently switched to ethanol Mg3N2 powder price is predicted to go higher in the future. What is Magnesium Nitride?Magnesium nitride, is an inorganic compound with the chemical formula Mg3N2…