Spark Plasma Sintering Furnace

Spark plasma sintering furnace (SPS) is an advanced powder metallurgy technology that realize densification and high performance of material through the use of high-energy pulsed electric currents to heat powders to high temperatures.

The basic principle of spark plasma sintering furnace: In the sintering process, the powder is first placed in the graphite mold in the furnace body, and then a certain pressure is applied. The material is then heated to high temperatures by a high-energy pulse current generated by a pulsed power supply, and is densified rapidly. At the same time, because the active atoms in the material are excited under the action of the pulse current, the diffusion and chemical reaction between the atoms are promoted, thus performance of the material is improved. 

Spark plasma sintering furnace has the following advantages:

1. Rapid heating and cooling: Due to the use of high-energy pulse current, the material can reach high temperature in a short time, and can be cooled rapidly after sintering, thereby reducing the thermal reaction of the material, avoiding the growth of grain and phase transition.

2. High density: Through the combined action of applying pressure and high-energy pulse current, the material can be rapidly densified to improve its density and performance.

3. Environmental protection: The pulse current used in the spark plasma sintering furnace will not produce toxic and harmful gases or radioactive substances, so the sintering process is environmentally friendly.

4. Wide application of materials: Spark plasma sintering furnace can be used for sintering a variety of materials, including metals, ceramics, cermet composite materials, etc.

The spark plasma sintering furnace is composed of furnace body, vacuum system, gas system (including gas source), heating system, cooling system, pressure system, pulse power system, electrical control system, etc. 

1. Preparation of high-temperature materials: Spark plasma sintering furnace can be used to prepare high-temperature alloys, high-temperature resistant materials, ultra-high temperature materials, etc. These materials have wide application prospects in aerospace, energy, environmental protection and other fields.

2. Preparation of nanomaterials: By using plasma plasma sintering furnace, nano-powder or filamentous materials can be prepared into high-performance nano-composites, nano-alloys, nano-ceramics, etc. These materials have excellent properties and can be used in catalysts, batteries, ceramics and other fields.

3. Processing of refractory metals: Spark plasma sintering furnace can be used to process refractory metals, such as tungsten, molybdenum, tantalum, niobium, etc. By using this technology, high performance metal materials and metal matrix composites can be prepared for applications in superalloys, electronic packaging, aerospace and other fields.