2023-05-10

Factors affecting scales graphite oxidation

Scale graphite has strong heat resistance and good corrosion resistance. It is the main carbon raw material used by carbon -resistant refractory materials, but it will have an oxidation reaction with oxygen at high temperature at high temperature. The following editor introduces the factors that affect the oxidation of scales. The specifics are as follows:1. Carbon oxidation responseHeating graphite in the air, carbon can be directly oxidized by O2 to CO and CO2. When carbon oxidation, CO and CO2 hybrid gases are generated. At low temperatures, it is mainly to balance CO2 and solid graphite. Solid graphite balance. At more than 1000 ° C, almost all of the mixed gas is CO. The oxidation response speed of graphite decreases with the total pressure of the system, but it increases with the rise of temperature.2. The effect of granularity on oxidation temperatureWith the increase of granularity, the temperature of the graphite's significant oxidation starts and the temperature of the oxida

2023-12-11

The service life of graphite crucibles

The magical properties of graphite and its application in the field of high technology

Graphite, this seemingly ordinary mineral, actually contains many magical properties. Its excellent electrical conductivity, thermal conductivity and chemical stability make graphite widely used in high-tech fields.In the field of electronics, graphite is used as a high-performance electrode material, and its excellent electrical conductivity makes the working efficiency of electronic equipment greatly improved. At the same time, the thermal conductivity of graphite also makes it an excellent heat dissipation material, effectively ensuring the stable operation of electronic equipment.In the field of new energy, graphite has also shown great application potential. As an important raw material for lithium-ion batteries, graphite plays a key role in improving battery energy density and extending battery life. In addition, graphite can also be used to prepare fuel cells, solar cells and other new energy equipment, to promote the rapid development of new energy technology.In the future, wi

2023-03-06

What are the key features of graphite blocks?

1. Heat transfer and conductivity: Graphite has excellent heat transfer and conductivity. It is compared with general raw materials, and its heat transfer conductivity is moderate. It is 100 times higher than ordinary non -metal materials.2. Organic chemistry reliability: The gas -graphite has excellent organic chemical reliability, which can resist acidity, alkaline resistance, and organic solution.3. heat resistance: graphite block is one of the most heat -resistant raw materials that are already known to today. Its dissolution point is 3850 ℃ ± 50 ℃, and the melting point is 4250 ℃. Discard the least, and discard 0.8%according to weight graphite. It is not difficult to see that the heat -resistant function of graphite is excellent.4. Wetness: The moisturizing function of the graphite is similar to sulfide, and the friction resistance is lower than 0.1. Its moisturizing function changes with the size of the fish scales. The larger the fish scales, the smaller the friction resistance

2023-06-07

The characteristics of silicon graphite

High hardnessThe hardness of silicon graphite is actually the hardness of SIC. It is second only to diamond, boron nitride, boron boronized, and has high hardness than tungsten tungsten and tritenuxide.Excellent corrosion resistanceSIC is a compound of a combination of covalent bonds. The chemical performance is stable. Except for strong oxidized gases and melting alkali, it is almost not eroded by other acid and alkali.Good high temperature antioxidantSICs with dense SI island glass phase at high temperature to prevent oxygen and SIC from contacting and prevent silicon carbide from continuing to oxidize. Therefore, SIC can be used above 1000 ° C for a long time.Excellent heat shocksSilicon fossils are heated to 1200 ° C for 10s, and they are put into room temperature water. It repeatedly repeatedly, as well as before, neither rupture nor peeling.

2023-08-21

Main characteristics of graphite crucible

1. High thermal conductivity: Due to the use of raw materials such as graphite with high thermal conductivity, the melting time is shortened.2. Heat resistance and shock resistance: Strong heat resistance and shock resistance, resistant to cracking during rapid cooling and heating.3. High heat resistance: High fire resistance, capable of withstanding high temperatures ranging from 1200 to 1600 ℃.4. Erosion resistance: Strong resistance to erosion of molten soup.5. Resistance to mechanical impact: Having a certain degree of strength to resist mechanical impact (such as the input of molten materials).6. Oxidation resistance: Graphite is prone to oxidation at high temperatures in oxidation aerosols, and due to oxidation prevention treatment, oxidation consumption is relatively low.7. Anti adhesion: Because graphite has the characteristic of not easily adhering to molten soup, the immersion and adhesion of molten soup are less.

2023-05-23

Heating graphite

Graphite radiator (3K-SBP) is a brand new heat-conducting heat dissipation material with unique grain orientation, which is evenly conducted in two directions. Improve the performance of consumer electronics. The product is uniformly dissipated while providing heat isolation in terms of thickness. The molecular structure diagram of the thermal graphite sheet is as follows:The unique combination of heat dissipation and thermal insulation performance of graphite heat conductive solutions allows heat -conducting graphite to become an outstanding material option for heat management solutions. The thermal graphite plane has the ultra-high thermal conductivity within the range of 150-1500 W/m-K.The chemical composition of Thermal Flexible Graphite Sheet is mainly a single carbon (C) element. It is a natural element mineral. The film polymer compound can obtain a graphized thin film under high temperature and high pressure because the carbon element is non -metal. Elements, but there is a co

2023-05-10

What is the market development prospect of spherical graphite?

Graphite is one of the better minerals in my country. This new type of natural graphite material produced and processed by new technology has played a key role in various industries such as electronic devices, chemical factories, light industry, military industry enterprises, national defense safety, aerospace and other industries. The spherical graphite is based on high -quality high -carbon steel natural scales graphite as the raw material. It uses advanced manufacturing processes to modify the surface of graphite to produce graphite products with different fineness and near -ellipse spherical.First: Graphite is divided into crystal graphite (shell -like) and hidden crystal graphite (soil) according to the crystal degree. Ballog graphite is suitable for spherical or spherical graphite products processed by mechanical and physical methods with natural scale graphite. It emphasizes that the physical and chemical performance of natural graphite should meet the following requirements:Se

2023-08-24

Graphite product testing

Testing of graphitized blanks and machined products:(1) The detection of mechanical processing quality mainly involves the detection of dimensional accuracy and surface roughness.(2) Detection of chemical composition analysis, analysis of components and their elements, and analysis of sulfur, phosphorus, barium, nickel, titanium, and other trace elements based on different products.(3) General physical performance measurement, including measurement of bulk density, true density, porosity, pore size distribution, and pore size distribution.(4) The detection of structural analysis mainly includes metallographic microscopy, X-ray diffraction, electron microscopy, and graphitization degree measurement.(5) Mechanical performance testing includes the determination of compressive strength, bending resistance, tensile strength, elastic modulus, and hardness. In addition, there are measurements of friction coefficient and wear amount.(6) Electromagnetic performance testing mainly includes the

2023-06-14

Knowledge points related to flake graphite

As a functional filler for coatings, flake graphite is mainly used for anti-corrosion coatings, fireproof coatings, and conductive coatings. As an anti-corrosion material, it is a rust resistant primer made of carbon black, talc powder, and oil, which has good chemical resistance and solvent corrosion resistance. If chemical pigments such as zinc yellow are added to the formula, the rust prevention effect will be better.In lithium-ion battery materials, anode materials are the key to determining battery performance. As a high crystallinity graphite material, the particle size of flake graphite directly affects the specific surface area of the electrode and the proportion of edge carbon atoms, which has a significant impact on the irreversible specific capacity of electricity. Therefore, flake graphite plays a crucial role in batteries.Flake graphite is one of the important materials for lithium batteries due to its high electronic conductivity, large lithium ion diffusion coefficient,