How serious are fertility problems today? People don't want to give birth,can't afford it, and can't give birth that has become the "three mountains".
The problem of childbirth is related to the people's livelihood. Whether a country can prosper or not depends on the population. I saw a set of data a few days ago. The data shows that on January 1, 1990, 2,784 babies were born in Shanghai. Ten years later, on January 1, 2000, 1,148 babies were born in Shanghai. In 2010, the number became 380. , 2020 only 156 people, the decline in the birth rate is shocking. The three most critical reasons are: I don't want to give birth, I can't afford it, I can't give birth! The decline of the global population will bring a series of economic and social problems, among which the demand for aluminum boride will also be affected.
Introduction to Aluminum Diboride AlB2 Powder
Aluminum diboride or Aluminum boride, AlB2 is an inorganic compound with the chemical formula AlB2. It is a binary compound formed by aluminum and boron elements. It is a grey-red solid and insoluble in water at room temperature and pressure. When heated, it loses surface gloss, stabilizes in cold dilute acid, and decomposes in hot hydrochloric and nitric acid.
Aluminum diboride is made by mixing fine powder of aluminum and boron and reacting it with heat. It is one of two compounds of aluminum and boron, the other being AlB12, and they are commonly known as aluminum boride.
Aluminum boride is considered hazardous because it reacts with acid and hydrogen to produce toxic gases. For example, it reacts with hydrochloric acid with borane and aluminum chloride released.
Structures of Aluminum Diboride AlB2
The structure of aluminum boride is similar to that of metal interdides in that its structure depends mainly on the crystal structure of aluminum and boron rather than on their valence relationship. The borides of aluminum are AlB2, AlB4, and AlB12. The diboride AlB2 can be formed by the reaction of two elemental substances above 600℃. It is a layered structure in which Al atoms directly overlap (A, A) and B atoms fill the triangular column formed by the direct overlap of Al atoms, that is, the boron layer is located between the two aluminum layers. The boron layer has a similar structure to graphite. The boron atoms are connected in a hexagonal network. Each B atom is 0.173nm away from the other three B atoms, and six Al atoms are connected to B, which occupy the apex of the triangular column. AlB2 can be dissolved in dilute hydrochloric acid to produce a reductive solution that may contain HB(OH)+3. AlB2 is insoluble in dilute sulfuric acid but soluble in nitric acid. AlB12 was decomposed by AlB2 at 920℃.
|Aluminum Diboride AlB2 Properties|
|Other Names||aluminum boride, aluminum diboride, AIB2|
|Solubility in H2O||insoluble|
Physicochemical Properties and Applications of Aluminum Diboride AlB2 Powder
AlB2 single crystal exhibits metallic conductivity along an axis parallel to the hexagonal base plane. Boron - aluminum composite aluminum or aluminum alloy reinforced with boron fiber or protective coating boron fiber. The volume content of boron fiber is generally about 45%~55%. It has low specific gravity and high mechanical properties. The longitudinal tensile strength and elastic modulus of the unidirectionally reinforced boron-aluminum composite are about 1.2~1.7GPa and 200~240GPa depending on the process and material. The longitudinal specific elastic modulus and specific strengths are about 3~5 times and 3~4 times of titanium alloy duralumin and alloy steel respectively. It has good fatigue performance and high strength under 400℃.
It has been applied to fan blades of turbojet engines and structural parts of aviation, aerospace, and artificial satellites. The hot pressing diffusion bonding method is used to manufacture plate, profile, and more complex shape parts. Continuous casting can also be used to manufacture various profiles.
Aluminum boride can be used in ceramics, medical equipment, nuclear energy, refractory ceramics, and other fields.
Main Supplier of Aluminum Diboride AlB2 Powder
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 boride powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality Aluminum Diboride AlB2 Powder, please feel free to contact us and send an inquiry. ([email protected])
COVID-19 has led to many sites shutting down. What is the impact on China's foreign trade enterprises as a whole and small, medium and micro foreign trade enterprises?
. It is learned that some foreign trade enterprises have been affected by the epidemic and are facing periodic problems in aluminum boride operated by foreign trade enterprises will also fluctuate with the changes of the epidemic. Contact us for the latest quotation on aluminum boride.
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