SPS spark plasma sintering system

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Spark plasma sintering (SPS) technology, as a novel and effective rapid sintering technology, has been applied to the research and development of various materials. It combines plasma activation and hot pressing into one. It has the advantages of fast heating speed, short sintering time, rapid cooling, adjustable external pressure, controllable atmosphere, energy saving and environmental protection, etc. It has been widely used in magnetic materials, functional gradient materials, nano Preparation of a series of new materials such as ceramics, fiber-reinforced ceramics and metal matrix composites.

This technology is a new technology that directly passes pulse current between the pressurized powder particles, is heated by the plasma generated at the moment of spark discharge, and uses field effects, thermal effects, etc., to perform short-term sintering at low temperatures. The spark plasma sintering equipment (SPS) adopts the method of direct current pulse current energization and pressure sintering, and the process is controlled by controlling the current size, the pulse duty ratio, the atmosphere, the pressure of the indenter, the stroke and other parameters.

Different from traditional sintering, the technical feature of spark plasma sintering equipment (SPS) to achieve rapid temperature rise through self-heating makes it possible to complete the densification process without degrading the original characteristics. Therefore, the spark plasma sintering equipment (SPS) can sinter amorphous/nanocrystalline materials and complete the sintering process before these materials have grown. Spark plasma sintering equipment (SPS) also has a wide range of applications in sintering functionally gradient materials, including the sintering combination between different metals or between metals and non-metals, such as connecting alumina ceramics and metals. In terms of energy conversion, SPS has certain potential in the preparation of bismuth telluride (BiTe) modules in Pertier modules, Seebeck thermoelectric semiconductor chips, and materials such as silicon germanium, ferrosilicon, and silicon manganese. SPS can also be used for the rapid solidification and sintering of AlSi and Al powder. The nano-particle level of this material is prone to grain growth during sintering and is difficult to sinter. Through SPS sintering, these materials can be rapidly densified from a powder state within a few minutes, avoiding grain growth, and the relative density after sintering is close to 100%, while maintaining its nanostructure.

The spark plasma sintering equipment (SPS) developed and produced by SIMUWU has reliable performance, safety and energy saving, and high degree of automation. The equipment is mainly composed of furnace body, furnace frame, vacuum system, inflation device, pressurization system, mold, water cooling system, pulse DC power supply, control system, safety protection system, etc. Has the following characteristics:

1. The sintering system can realize automatic program control of sintering temperature, pressure control, current control, etc.

2. Equipped with a safe shutdown function, the equipment will automatically shut down when monitoring or detecting abnormal conditions such as equipment water temperature, mold damage, etc., and the equipment is safe and reliable.

3. Equipped with a data acquisition and analysis system, which can store and recall the process parameters that determine the quality of sintered products, such as sintering voltage, current, control temperature, applied pressure, displacement, vacuum, displacement change rate, measured temperature and other physical quantities to save and recall. Track the production process of the product.

4. Using a large LCD touch operation panel, it can diagnose and confirm the status display, alarm display, alarm history, pressure setting value, etc. of displacement data and linkage and interlock at any time.

The mold used in the spark plasma sintering equipment (SPS) is generally a graphite mold, which can withstand higher pressure. There is a through hole on one side of the mold, and a thermocouple can be inserted into it. The equipment generally uses unidirectional pressure, and the fixed side has a through hole. , Infrared thermometer can be installed. The temperature of the graphite mold can be monitored in real time during the heating process through the use of thermocouples and infrared thermometers.

The spark plasma sintering equipment (SPS) is favored by major universities and enterprises because of its reliable performance and advanced functions. At the same time, Haoyue Technology is also continuously researching and developing, improving technology, and launching new material preparation equipment with better performance in response to market needs. , And provide corresponding technical support, SIMUWU furnace is looking forward to cooperating with you.

Learn More : Spark Plasma Sintering Furnace