Spark plasma sintering (SPS) is a new technology for preparing functional materials. It has the remarkable characteristics of fast heating speed, short sintering time, controllable microstructure, energy saving and environmental protection, and can be used to prepare metal materials, ceramic materials, composite materials, nano-bulk materials, amorphous bulk materials, gradient materials and so on.
SPS technology is heated and sintered by directly introducing pulse current between powder particles, so it is also called plasma activated sintering or plasma-assisted sintering -PAS in some literatures. As early as 1930, American scientists put forward the principle of pulse current sintering, but it was not until 1965 that pulse current sintering technology was applied in the United States, Japan and other countries. Japan obtained the patent of SPS technology, but it failed to solve the problem of low production efficiency at that time, so SPS technology was not popularized and applied.
From 65438 to 0988, Japan developed the first industrial SPS device, which was widely used in the research field of new materials. Following 1990, Japan introduced the third generation of SPS products that can be used in industrial production, with sintering pressure of 10 ~ 100 t and pulse current of 5000 ~ 8000a ... Recently, a large-scale SPS device with pressure of 500t and pulse current of 25000A was developed. Because SPS technology has the advantages of high speed, low temperature and high efficiency, in recent years, many foreign universities and scientific research institutions have successively equipped SPS sintering systems, and used SPS to research and develop new materials and introduced several SPS sintering systems, which are mainly used for sintering nano-materials and ceramic materials [5 ~ 8]. As a new material preparation technology, SPS has attracted extensive attention at home and abroad.
At present, many domestic companies are making spark plasma sintering furnaces, but now they are mixed, not real sp. Judging from my contact, there are only a few companies with good performance and mature technology, several in Shanghai and one in Shandong.
The one in Shandong is called Shandong Guanghe Information Engineering Co., Ltd.
We have dealt with this company, which is not bad, with good equipment and good service. You can ask them, their company has a manager Liang, who is very nice and professional. You can contact him. The telephone number of their company is 053 1-55556088.