Advanced Nano Material

  Cadmium Sulfide CDS Powder Overview Cadmium sulfide  is an inorganic substance with the chemical formula CDS. There are two kinds of crystals, α type is lemon yellow powder, β type is orange-red powder. Slightly soluble in water, soluble in acid, slightly soluble in ammonia. Cadmium sulfide is a yellow solid. There are two different crystal structures in nature, the rare minerals clinopyroxene and leucite, but are more commonly used as impurity substituents in the structurally similar zincites sphalerite and wurtzite, while the zincites sphalerite and wurtzite are more commonly used as impurity substituents. Wurtzite is the main economic source of cadmium. As an easily isolated and purified compound, it is a major source of cadmium in all commercial applications. Its bright yellow color made it used as a pigment in the yellow paint "Cadmium Yellow" in the 18th century.  Like zinc sulfide, cadmium sulfide also has two crystal forms. More stable hexagonal wurtzite structures

  Overview of Titanium Dioxide TiO2 Powder Titanium dioxide  is an inorganic substance with the chemical formula TiO2. It is a white solid or powdered amphoteric oxide. The molecular weight was 79.9. It is non-toxic, has the best opacity, the best whiteness and brightness, and is considered one of the best white pigments in the world. Among the commonly used white pigments, titanium dioxide has the smallest relative density, and among the white pigments of the same quality, titanium dioxide has the largest specific surface area and the largest pigment volume. Titanium dioxide has very stable chemical properties and is an acidic amphoteric oxide. At room temperature, it hardly reacts with other elements and compounds. Ineffective for oxygen, ammonia, nitrogen, hydrogen sulfide, carbon dioxide, sulfur dioxide. Insoluble in water, fat, dilute acid and inorganic acid, alkali, only soluble in hydrofluoric acid. . But under the action of light, titanium dioxide can undergo continuous redox r

  Overview of boron carbide B4C powder Boron carbide  B4C powder   is an important special ceramic with many excellent properties, commonly known as artificial diamond, and is a kind of boride with high hardness. It does not react with acid-base solution, it is easy to manufacture and the price is relatively cheap. Widely used for grinding, grinding and drilling of hard materials. Boron carbide was first discovered in 1858, and its hardness is second only to diamond and cubic boron nitride in nature, especially its near-constant high temperature hardness (>30GPa) is unmatched by other materials, so it has become super hard. An important member of the material family. Boron carbide B4C powder  has the characteristics of high melting point (2450 ℃), high hardness, high modulus, low density (2.52g/cm3), good wear resistance, strong acid and alkali resistance, good neutron absorption capacity, and low expansion rate. It is widely used in refractory materials, engineering ceramics, nucle

  Overview of graphite powder Graphite powder  is just one type of graphite in powder form that retains all the primary and secondary properties inherent in graphite. Graphite is an allotrope of carbon. It is gray-black and opaque solid. It is greasy and stains the paper. Its hardness is 1-2, and with the increase of impurities in the vertical direction, the hardness increases to 3-5. The specific gravity is 1.9-2.3. The specific surface area is concentrated in the range of 1-20m2/g. Under the condition of isolating oxygen, its melting point is above 3000 ℃, which is one of the most high temperature resistant minerals. It conducts electricity and heat. Good chemical stability, corrosion resistance, not easy to react with acid, alkali and other reagents. Graphite burns in oxygen to generate carbon dioxide, which can be oxidized by strong oxidants such as concentrated nitric acid and potassium permanganate. There is no pure graphite in nature, and it often contains impurities such as SiO

  Overview of Cuprous Oxide Cu2O Powder Cuprous oxide , the chemical formula is Cu2O, is a monovalent cupric oxide, bright red powder solid, almost insoluble in water, disproportionate into divalent copper and copper elements in an acidic solution, and gradually oxidized into black copper oxide in humid air.  Cuprous oxide is commonly used as a pigment, biocide and antifouling agent in marine coatings. Rectifier diodes based on this material were used in industry as early as 1924, long before silicon became the standard. Copper(I) oxide is also responsible for the positive pink color of the Benedict test. Application of cuprous oxide Cu2O powder Antifouling paint for ships and bottoms; it is an effective corrosion control. Glass and porcelain coatings. Used as p-type semiconductor material, used in the manufacture of photometer cells and in the manufacture of rectifiers. Used as a fungicide and seed dressing. Cuprous oxide  is often used as a catalyst for the production of other chemic

  Amorphous boron powder overview Boron powder  is black or dark brown powder, which can react with fluorine at room temperature and is not corroded by alkali and hydrofluoric acid aqueous solution. Boron powder is also known as amorphous boron. Boron has high mass calorific value and volume calorific value. It is a light brown to gray-black powder with active chemical properties, but it is relatively stable at room temperature and will be oxidized when the temperature reaches 300 degrees Celsius. The ignition level is very high, requiring 700 degrees Celsius to ignite. Boron powder can react with oxygen, nitrogen, sulfur, or directly combine with some metals to form some borides. Boron is an essential micronutrient for plant health and agricultural growth and development. The importance of boron has been shown to be vital in plant production since the early 1920s. Low concentrations of borate are used in agriculture as a micronutrient in fertilizers. Boron can be divided into crystall