Understanding Vapor Deposition Furnace and Its Application
Oct 18,2024
With the development of science and technology, the cost of traditional high melting point metal preparation method is relatively high. When gas is introduced into the room, chemical reaction will occur on the surface of the indoor substrate, which puts forward new requirements for chemical phase deposition furnace. Vapor deposition furnace technology can also be applied to lithium electronic battery materials, using the characteristics of easy reproducibility and foresight of the vapor deposition furnace itself, so let's get to know the vapor deposition furnace and its application together!
Summary of Vapor Deposition Furnace
The vapor deposition furnace is a furnace in which the solid particles of the ceramic green body are combined with each other at high temperature, the grains become larger, the pores (pores) and grain boundaries gradually decrease, and the material transfer shrinks the total volume and increases the density, forming a dense polycrystalline sintered body with a certain microstructure.
Principle of Vapor Deposition Furnace
Cemented carbide sintering principle: metal (Co,Ni)-based, also known as cermet materials, ceramic phase (TiC, TaC, NbC) as the matrix, in a higher temperature than the binder phase integration, the process is called Sintering process.
Application of Vapor Deposition Furnace
The vapor deposition furnace is mainly used for the sintering of ceramic powder, ceramic ferrule and other zirconia ceramics. The sintering of diamond saw blades is also used for heat treatment such as copper and steel strip annealing. The sintering furnace is composed of thick film circuits, thick film resistors, electronic component electrodes, LTCC, steel heaters, solar panels, etc.
Types of Vapor Deposition Furnace
Industrial vapor deposition furnace covers most of the market high-temperature polysilicon ingot furnace sintering furnace, sub-industry, vapor deposition furnace types are mainly:
1. Cemented carbide field:
Vacuum sintering furnace, low pressure (60bar) sintering furnace, vacuum degreasing sintering furnace, low pressure degreasing sintering furnace, low pressure degreasing sintering gas sintering furnace) 20bar;
2. Powder metallurgy field:
Continuous mesh belt sintering furnace (1150 degrees), push rod sintering furnace (1250 degrees), steel belt sintering furnace (1000 degrees), rotary sintering furnace, etc;
3. Solar energy field:
Polycrystalline silicon ingot furnace is also a kind of sintering furnace.
Application of microwave sintering furnace which is one of sintering furnaces
The key of microwave sintering technology is microwave heating, which converts microwave electromagnetic energy into heat energy, and its principle is that substances produce electronic polarization, atomic polarization, interface polarization, dipole steering polarization and so on under the action of microwave.
Of course, not all materials can be heated by microwaves. According to the characteristics of substances and microwaves, substances can be divided into three categories:
Transparent mold, mainly a low-loss insulator. For example, many polymer materials and some non-metallic materials will partially reflect and partially transmit microwaves, and hardly absorb microwaves. This material can exist in the microwave field for a long time, the heat is very small, and it is often used as a wave-transmitting material in a heating cavity. For example, it is a wave-transparent separator that can be used in a microwave vacuum chamber such as tetrafluoroethylene.
2. The total reflection type is mainly a metal material with good conductivity. The absorption mold is mainly a dielectric material between fiber material, paper, wood, silicon carbide, zirconia, phosphor, ceramic, water, paraffin and other metals and insulators. The reflection coefficient of these materials to microwaves is close to 1, and they can only pass through a very small amount of incident microwaves. They can be used as waveguides, microwave cavities, stirrers, etc. in microwave heating equipment.) microwave sintering technology is mainly applied to ceramic materials and metal powder materials.
Technical characteristics of vapor deposition furnace Microwave heating has the characteristics of integrity, instantaneity, selectivity, environmental protection, safety and high efficiency and energy saving. As a kind of clean energy, microwave used in microwave sintering has become a research hotspot in the material industry, which has caused a revolution in the field of sintering technology.
Vapor deposition furnace features:
1. Can significantly reduce the sintering temperature, greatly 500;
2. Significantly reduce energy consumption, energy saving up to 70-90%;
3. The sintering time can be shortened to more than 50%;
4. Tissue densification, grain refinement, material performance improvement;
5. The technology is precise and controllable. Good product consistency and stable quality.
Vapor deposition furnace applications:
1. Ceramic materials:
The microwave high temperature furnace is used to sinter all kinds of white porcelain, sintered porcelain, thin tire porcelain and bone ash porcelain, and the microwave high temperature furnace is used to sinter red porcelain and blue and white porcelain. The finished product rate is greatly improved. The microwave high temperature furnace can sinter all kinds of oxide ceramic materials, nitride ceramic materials, carbide ceramic materials and composite ceramic materials. Compared with the traditional gas sintering furnace and fuel sintering furnace, the sintering cost is reduced by more than half, the qualified rate is improved.
2. Powder metallurgy materials:
Cemented carbide: microwave high temperature furnace sintering carbide cutting tools have achieved large-scale industrial production. Rapid sintering makes the carbide grain finer, which can greatly improve the performance of the product. Microwave high-temperature furnace sintering of various tungsten alloys; microwave high-temperature furnace sintering of various iron-based, copper-based powder metallurgy parts.
3. Magnetic materials:
Microwave high-temperature furnace sintering of nickel-zinc soft magnetic ferrite materials; In the case of the same ratio can obtain better high-frequency characteristics, microwave sintering of rotating magnet ferrite materials; microwave sintering of different brands of manganese-zinc soft magnetic ferrite materials frequency characteristic curve compared with the traditional sintering furnace sintering, microwave high-temperature furnace sintering of spin ferrite materials without changing the formula, the loss is lower, better performance.
4. Microwave synthesis of vanadium nitride and various iron nitride alloy materials:
Special iron nitride alloys such as ferrosilicon nitride, ferromanganese nitride and ferrochromium nitride can be produced on a large scale by using microwave high-temperature synthesis technology, which can not only greatly reduce unit energy consumption, but also improve product performance indicators.
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