John Albanese, leader of the Australian Labor Party, was sworn in as Australia's new prime minister. After his victory, Albanese said he would "make a big change" in the country's climate policy.
"We now have an opportunity to end the 'climate wars' in Australia," he said. "Australian businesses understand that doing the right thing on climate is good for our economy and good for jobs, and I hope Australia will join the global effort on climate change," Albanese said Australia would engage with other countries to change policies when it came to tackling climate change.
In addition, Albanese’s Labor Party has proposed a more ambitious plan to cut emissions by 43 percent from 2005 levels by 2030, the report said. However, Labor is not currently planning to phase out coal use or halt new coal mining projects.
The climate issue was a major concern of voters in Australia's general election. Mr. Morrison, the former prime minister, was criticized for failing to direct the response to repeated bushfires in 2019 and 2020.
SBS has reported that According to the latest Climate Change Performance Index of 64 countries released at the 2021 United Nations Climate Change Conference (COP26), Australia's climate policy ranks at the bottom of all countries, and is one of the world's worst performers in three aspects of emissions, renewable energy, and energy use. Australia ranks 52nd in renewable energy, 54th in energy use, and 56th in emissions.
It is predicted that the prices of many other commodities like the AlN powder would increase in the next few days.
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.
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Aluminum Nitride Supplier
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