Is boron amorphous or crystalline?Boron can be prepared in several crystalline and amorphous forms. The well-known forms of crystallization are α-rhombohedral (α-R), β-rhombohedral (β-R) and β-tetragonal (β-T). In spec…
What is copper oxide?Copper oxide is an inorganic substance. Copper oxide chemical formula is CuO. It is a black oxide of copper. Slightly bisexual and slightly hygroscopic. Insoluble in water and ethanol, easily soluble in acid, thermally stable, de…
What is the use of aluminum oxide?Medical professionBecause of its hardness, bioinertia and chemical properties, alumina is the preferred material for hip replacement bearings, such as prosthetics, bionic implants, prosthetic eye substitutes, tissue…
Aluminum nitride is a kind of refractory composite ceramic material with hexagonal wurtzite structure. Pure aluminum nitride is blue-white, and aluminum nitride ceramic is usually gray or white. Aluminum nitride is stable at high temperature in inert…
Silicon nitride ceramic materials have excellent properties such as high thermal stability, strong oxidation resistance, and high dimensional accuracy.…
What is copper and nickel alloy called?There are a series of different CuNi alloy, which have different properties and can be used for different purposes, including:Cupronickel: containing 60-90% copper.Constantan: 45% nickel.Monel: at least 52% nick…
Us consumers have filed a lawsuit against Mars in a California court on last Thursday, claiming that Skittles contains too much titanium dioxide (E171). Is titanium dioxide harmful to the body?Titanium dioxide is an additive used in pigments, adhesiv…
The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…
Inconel 718 alloys is a precipitation-hardening nickel-iron-based superalloy containing niobium and molybdenum. Its microstructure is austenite and has excellent comprehensive properties.…
Early strength admixture refers to the admixture that can improve the early strength of concrete and has no significant effect on the later strength.Superplasticizer for concreter is a concrete admixture that can reduce the amount of mixing water whi…
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 com…
Under the premise of ensuring the quality of concrete, early strength agent can greatly shorten its final setting time, make it as early as possible, and then accelerate the turnover of template, save template dosage.…
Last week, the domestic scrap market is weak adjustment, merchants are cautious in receiving goods, inventory remains low, the arrival of steel slightly increased, but the weak demand for scrap is difficult to change, scrap market continues to mainta…
Ni-Ti alloy, also known as Nitinol, is a metallic alloy of nickel and titanium in which the two elements are present in roughly equal atomic percentages.…
Russian President says if the European Union imposes an oil embargo, Europe will buy energy at the most expensive price and economic activity in Europe will weaken. Rosneft needs to change its business model. Russia will help facilitate settlement an…
There are many types of lubricants available, from motor oils to special lubricants such as lithium-based lubricants.…
LNG (liquefied natural gas) ship freight nearly two months since the year's highest impact daily price price In June, spot freight of 174,000 cubic meters OF LNG has officially broken through…
The rising price of coke also has a certain impact on the price of the product name Recently, coke prices are rising. From June 7 zero hours,…
Early strength agent is an admixture which accelerates the development of concrete early strength and has no significant effect on later strength.…
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 n…