NEWS CENTER

Industry News

Company News

Introduction to Various Ceramic Crucibles

Introduction to Various Ceramic Crucibles

Crucibles, as an important component of chemical equipment, are containers for melting and refining liquid metals and heating solid-liquid reactions. It is the foundation for ensuring the smooth progress of chemical reactions.

04

2023

/

01

Preparation method of 3D printed metal powder

Preparation method of 3D printed metal powder

The quality of metal 3D printed parts largely depends on the performance of metal raw materials. There are mainly two types of raw materials for metal additive manufacturing: powder and wire. Among them, powder materials are widely used, such as laser metal deposition and selective laser melting, which are commonly used as raw materials in rapid prototyping manufacturing processes. The commonly used metal powder particle size range in additive manufacturing is 15-53 μ M (fine powder), 53-150 μ M (coarse powder).

04

2023

/

01

From atomization powder making to 3D printing, boron nitride nozzle as a solution to the problem of molten metal

From atomization powder making to 3D printing, boron nitride nozzle as a solution to the problem of molten metal

Powder metallurgy has core process advantages such as high material utilization rate, low unit energy consumption, environmental protection, etc. It is a technology in line with the direction of carbon neutrality in the future. In recent years, with the maturity of powder metallurgy technology and the trend of miniaturization of components, two emerging process routes, metal injection molding (MIM) and 3D printing (AM), have rapidly emerged. At the same time, the supply of high-quality powder raw materials has become a major factor restricting the development of the industry.

04

2023

/

01

Preparation process of spherical metal powder for 3D printing

Preparation process of spherical metal powder for 3D printing

Spherical metal powder is the core material of metal 3D printing and the most important link in the 3D printing industry chain, closely related to the development of 3D printing technology. At the 2013 World 3D Printing Technology Industry Conference, authoritative experts provided a clear definition of the performance requirements for 3D printing metal powders, which are metal powders with a size less than 1mm. In addition, the metal is required to meet requirements such as high purity, good sphericity, narrow particle size distribution, low oxygen content, and good fluidity. The ASTM F3049-14 standard issued in June 2014 specifies the range and characterization methods of 3D printed metal powder properties. At present, metal powder materials used for 3D printing are mainly concentrated in metals and their alloys such as iron, titanium, cobalt, copper, nickel, etc.

04

2023

/

01

Advantages of alumina ceramic crucibles

Advantages of alumina ceramic crucibles

Easy to wash and maintain cleanliness. The glaze of ceramic crucibles is bright and delicate, and it is easy to wash away after being stained.

04

2023

/

01

How high is the resistance of ceramic crucibles to high temperatures

How high is the resistance of ceramic crucibles to high temperatures

The porcelain crucible depends on the formula. If ordinary clay can only withstand around 600. If other ingredients are added, the bearing temperature will also increase significantly Porcelain crucible is a chemical laboratory product, mainly composed of alumina (45-55%) and silica. Suitable for molten samples of acidic substances such as K2S2O7. Generally, it cannot be used for melting with alkaline substances such as NaOH, Na2O2, Na2CO3 as fluxes to avoid corrosion of porcelain crucibles. Porcelain crucibles should not come into contact with hydrofluoric acid.

04

2023

/

01

Application of Cerium Hexaborate

Application of Cerium Hexaborate

Cerium hexaborate is mainly used as a coating for hot cathodes, or hot cathodes are directly composed of cerium hexaborate crystals. Cerium hexaborate (CeB6) and lanthanum hexaborate (LaB6) are often used as high current hot cathode coatings. Six boride has a low work function, about 2.5 eV, and has a certain tolerance to cathode pollution. The cerium borate cathode has a lower evaporation rate than lanthanum borate at 1700 K, but they become consistent at 1850 K and even have a higher evaporation rate above that temperature. Cerium borate cathode has a 50% longer lifespan than lanthanum borate due to its higher carbon pollution resistance. The brightness of boride cathode is ten times that of tungsten cathode, and its life is 10-15 times that of tungsten cathode. Some laboratory experiments have shown that CeB6 is more resistant to the negative effects of carbon pollution than LaB6. They are commonly used in electron microscopes, microwave tubes, electron beam etching, electron beam welding, X-ray tubes and free-electron laser.

04

2023

/

01

Introduction and characteristics of cerium hexaborate

Introduction and characteristics of cerium hexaborate

Cerium hexaboride (CeB6) has become a cathode material with high electron emissivity due to its low work function. It is more resistant to carbon pollution and has a longer life than the lanthanum boride cathode. It is widely used in electron microscopy, microwave tubes, electron beam etching, electron beam welding, X-ray tubes and free-electron laser. Cerium hexaborate crystal has been successfully applied in desktop scanning electron microscopes, becoming an excellent and stable filament material. Cerium hexaboride (CeB6, also known as cerium boride, CeBix, CEBIX, sometimes written as CeB) is a inorganic compound. Cerium hexaborate (CeB6) has a CsCl structure (belonging to a simple cubic crystal system, with large spheres representing the Ce element). The difference is that B6 octahedral clusters occupy the position of Cl, while Ce occupies the position of Cs. It is a kind of refractory ceramic material. Its low work function makes it one of the cathode materials with the highest known electron emissivity. At the same time, it is very stable in vacuum. The normal operating temperature of cerium hexaborate is 1450 ° C. Cerium hexaborate, like lanthanum hexaborate, slowly evaporates during cathode operation. The CeB6 cathode can maintain its optimal shape for a longer period of time at an operating temperature of 1850 K, resulting in a longer lifespan. At the same time, due to its evaporation rate being about 30% slower than lanthanum borate, the thermal cathode coating of cerium borate is more difficult to remove than lanthanum borate.

04

2023

/

01

< 12 >