How are aluminum nitride ceramic powder injection molded parts produced?

How are aluminum nitride ceramic powder injection molded parts produced?

Al powder is directly nitridated to prepare aluminum nitride ceramic powder: Al powder

The direct nitriding method is the earliest method to prepare AlN powder. In this method, aluminum powder is heated in nitrogen. At high temperature (800~1200℃), aluminum powder reacts directly with nitrogen to form aluminum nitride powder. The reaction formula is 2Al+N2=2AlN.

The method has the advantages of abundant raw materials, low cost, simple process, no side reactions and the like. However, the shortcomings of this method are also obvious. In the initial stage of the reaction, a nitride film will gradually form on the surface of the aluminum powder particles, making it difficult for nitrogen to penetrate further, hindering the nitrogen reaction, resulting in low yield. And because the reaction between aluminum and nitrogen is a strong exothermic reaction, the speed is very fast, which causes the AlN powder to self-sinter, form agglomerations, and coarsen the powder particles.

The preparation methods of aluminum nitride powder include Al2O3 carbothermal reduction, self-diffusion high-temperature synthesis, high-energy ball milling, chemical vapor deposition, sol-gel method, plasma chemical synthesis, in-situ self-reaction synthesis, arc melting, microwave synthesis, sol heat Synthesis etc.

Overview of aluminum nitride ceramic powder injection molded parts

AlN can be stabilized to 2200°C. The intensity is high at room temperature, and the intensity decreases slowly with the increase of temperature. It has good thermal conductivity and low thermal expansion coefficient, making it a good thermal shock material. It has a strong ability to resist the corrosion of molten metal and is an ideal crucible material for melting and casting pure iron, aluminum or aluminum alloy. Aluminum nitride is also an electrical insulator with good dielectric properties, and it is also very promising as an electrical component

Application of aluminum nitride ceramic powder injection molding parts

1. Aluminum nitride powder has high purity, small particle size and high activity. It is the main raw material for manufacturing high thermal conductivity aluminum nitride ceramic substrate.

2. Aluminum nitride ceramic substrate has high thermal conductivity, low expansion coefficient, high strength, high temperature resistance, chemical corrosion resistance, high resistivity, and low dielectric loss. It is an ideal substrate and packaging material for large-scale integrated circuits.

3. The hardness of aluminum nitride is higher than that of traditional alumina. It is a new type of wear-resistant ceramic material, but due to its high cost, it can only be used on severely worn parts.

4. Utilizing the heat resistance, melt erosion resistance and thermal shock resistance of AlN ceramics, GaAs crystal crucibles, Al evaporation plates, magnetic fluid power generation devices and high-temperature turbine corrosion-resistant parts can be made, and its optical properties can be used as Infrared window. Aluminum nitride film can be made into high-frequency piezoelectric components and ultra-large-scale integrated circuit substrates.

5. A kind of aluminum nitride is heat-resistant, resistant to molten metal corrosion, stable to acid, but easily corroded in alkaline solutions. The new surface of AIN will react when exposed to moist air, forming a very thin oxide film. Using this feature, it can be used as a crucible and mold material for melting aluminum, copper, silver, lead and other metals. AIN ceramics have good metallization properties and can replace toxic beryllium oxide ceramics in the electronics industry.

The price of aluminum nitride ceramic powder injection molding parts

The price of aluminum nitride ceramic powder injection molded parts will vary randomly with factors such as production cost, transportation cost, international situation, and market supply and demand of aluminum nitride ceramic powder injection molded parts. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for aluminum nitride ceramic powder injection molded parts, please feel free to send an inquiry to get the latest price of aluminum nitride ceramic powder injection molded parts.

Suppliers of aluminum nitride ceramic powder injection molded parts

As a global supplier of aluminum nitride ceramic powder injection molding parts, Tanki New Materials Co. Ltd has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineering materials. The company has successfully developed a series of powder materials (two Molybdenum silicide, lanthanum nitride LaN powder, calcium silicide, iron boride), high-purity targets, functional ceramics and structural devices, and provide OEM services.