Engineers from Haruyama Magnetic Materials Co., Ltd., Hirano Sadao and Nakagawa Motohisa came to China to attend an academic conference. After the conference, they planned to stay in the capital for two days and visit several places of interest. They had just finished the second visit
One day, the organizer of the conference found them and enthusiastically presented them with two tickets to the materials exhibition, and also sent a car to take them outside the exhibition hall.
The actions of the conference organizer made the two of them feel a little baffled. Thinking about it carefully, it seemed to be somewhat coercive, which made them feel very unhappy. However, after they reluctantly arrived in front of the exhibition hall,
They completely forgot about the disrespect shown to them by the conference organizer, because their attention was all attracted by the set of magnet gates arranged by Qin Hai.
As experts who have been engaged in the research of magnetic materials for a long time, Hirano Sadao and Nakagawa Motohisa are very aware of the current development status of permanent magnet materials. A magnet the size of a fingernail can produce such powerful magnetism, which is completely beyond the scope of their knowledge.
At that moment, Hirano Sadao even had the idea of breaking off the small magnet and putting it in his pocket. Even if he couldn't take away the whole magnet, he could just scrape off some magnetic powder from it. For him,
It also has great significance. However, after seeing the eager look on the security guard next to him, he gave up this disgraceful idea and went straight to the magnetic materials exhibition hall of the exhibition hall with Nakagawa Motohisa.
When they arrived at the exhibition hall, the two of them took a quick look and found that the person standing in the booth introducing the audience was actually an acquaintance of theirs. That was Sun Yuzhi, an associate professor at the Capital University of Technology. Everyone was engaged in permanent magnet materials, and Sun Yuzhi had also been to Japan.
I went to academic conferences and dealt with Hirano Sadao and Nakagawa Motohisa, so they knew each other. Hirano Sadao knew that Sun Yuzhi had made great achievements in the research of permanent magnetic materials. If the strong magnetic material at the gate came from Sun
Hand of Yuzhi, that’s easy to explain.
"Hi, Sun Jun, is it really you?" Hirano Sadao squeezed in front of the booth, pretending to be surprised, and greeted Sun Yuzhi.
When Sun Yuzhi saw two Japanese people, he quickly found an assistant to continue explaining to the audience. He walked around the booth and came to the front of Hirano Sadao and Nakagawa Motohisa.
"It's Hirano-kun, and Nakagawa-kun, why did you come to China?" Sun Yuzhi smiled and greeted in Japanese.
Sun Yuzhi did not have any ill feelings towards Hirano Sadao and Nakagawa Motohisa, but rather felt a sense of closeness among colleagues. However, Qin Hai had greeted him in advance and wanted to give his Japanese colleagues the new product he had just developed.
Setting up a big trap. Sun Yuzhi naturally wanted to accept this arrangement, but because of this psychological preparation, when he met Hirano Sadao and Nakagawa Motohisa, he couldn't help but feel a little guilty.
"We are here to attend an academic seminar on neodymium ferromaterials. By the way, why didn't Sun Jun attend this conference? In China, the authority on research on neodymium ferromaterials is none other than Sun Jun." Hirano Sadao asked.
Sun Yuzhi smiled and said: "I have been quite busy these days. The organizer also informed me before the meeting. I declined. In fact, it cannot be said that it is entirely because of busyness. It is mainly because I have not been exposed to NdFe for a year.
The materials are ready…”
At this point, he suddenly stopped talking and forcefully swallowed the rest of the words, with a somewhat embarrassed look on his face.
"Sun Jun is saying that you won't make neodymium iron materials anymore?" Hirano Sadao very sensitively grasped the mystery behind Sun Yuzhi's words. He vaguely felt that the new magnetic materials exhibited at this exhibition may be different from Sun Yuzhi.
Related to the research direction.
Neodymium iron materials are rare earth permanent magnet materials. Permanent magnet materials are also called hard magnetic materials. The concept refers to strong magnetic materials with strong resistance to demagnetization and high residual magnetic induction. Permanent magnet materials include cast permanent magnet alloys.
, deformable permanent magnet alloys, hard ferrites, rare earth permanent magnet alloys and bonded magnets, etc.
Rare earth permanent magnet materials refer to permanent magnet alloys containing rare earth materials, which are the highest performance among all permanent magnet materials. Rare earth permanent magnet materials can be divided into three generations according to the time of production. The first generation of rare earth permanent magnet materials is rare earth
Cobalt magnets are alloys of rare earth elements and metal cobalt; the second generation of materials is based on the first generation, replacing some of the more expensive rare earth elements with cheaper iron, copper, zinc and other materials to form rare earth.
Alloys of iron and cobalt are characterized by low cost and strong magnetism. The most typical representative is samarium cobalt alloy.
In 1983, Japan first reported the cobalt-free third-generation permanent magnet material. Its typical product is a compound formed of rare earth neodymium, iron and boron, referred to as NdFeB, and some are also directly called NdFe materials.
The magnetism of NdFeB is much higher than that of samarium cobalt alloy, and because it does not contain expensive cobalt, the cost is relatively low, and it has quickly become the leader in permanent magnet materials. From the early 1980s to the present, no one has invented a magnetic material better than NdFeB.
Fe-boron is a permanent magnet material with stronger magnetic properties.
Sun Yuzhi's past research expertise was NdFeB. By incorporating other rare earth elements into NdFeB, he invented a new material with a maximum magnetic energy product of 390 kilojoules per cubic meter, exceeding the highest level achieved by Japanese scholars in the same period.
Because of this, he won the respect of Hirano Sadao and other Japanese scholars. However, Hirano Sadao knew that even the performance of the new neodymium iron boron material was far from that of the magnet at the gate, that is,
Said that during this period, Sun Yuzhi must have invented better materials.
In the past 10 years, research on higher-performance permanent magnet materials has mainly focused on doping NdFeB materials. If Sun Yuzhi can invent higher-performance materials, as he said, there will be a
I have not been exposed to neodymium-iron materials for years, which means that the formula of this new material should be a new combination besides neodymium, iron, and boron. This information is really important for those who work on permanent magnet materials.
Already.
"The research on NdFeB has reached a bottleneck." Sun Yuzhi said to Hirano Sadao and Nakagawa Motohisa with some embarrassment, "I plan to try using other rare earth elements, and maybe I can make better discoveries."
"Are these permanent magnet materials your new discovery?" Motohisa Nakagawa asked, pointing to various demonstration materials in the exhibition hall.
"These are just part of it." Sun Yuzhi said arrogantly in a humble tone.
"Sun Jun, I think the magnetic energy product of these materials is much higher than that of NdFeB. How did you do it?" Hirano Sadao asked anxiously.
Sun Yuzhi looked troubled and said: "Mr. Hirano, it's not that I don't want to tell you, it's really...you don't know yet, right? I no longer work at Beijing University of Technology. The organization I work for now is called Anhe Institute of Materials Science and Technology, which is a private company."
research institution, so..."
There is no need for Sun Yuzhi to say the following words. Hirano Sadao and Nakagawa Motohisa can naturally understand them.
If Sun Yuzhi was still at Beijing University of Technology, the most important thing to do when developing a new type of material would be to quickly write an article and publish it. He would not keep it secret to colleagues who came to communicate, but would disclose all the information to them.
Tell the other party the secrets of technology. A lot of technology was lost because of this. Many technologies were first discovered by Chinese scholars, but were patented by foreign companies. Institutions like Kyungseong University of Technology are very strict about applications.
Things like patents are frowned upon. They may even be proud that someone else patented their technology.
Hirano Sadao was so frank in asking Sun Yuzhi about technical details because he knew the habits of Chinese scholars. In his opinion, as long as he complimented Sun Yuzhi a few more words, he would definitely reveal the most important technical aspects. Technology is often not enough.
It is just a layer of window paper. If Sun Yuzhi can help Hirano Sadao pierce this window paper, then Hirano Sadao will be able to quickly develop the technology after returning to Japan, and he can get all the technology before Sun Yuzhi can react.
All patents have been registered.
However, Sun Yuzhi told Hirano Sadao that he no longer works at the Kyōjo Institute of Technology. His current workplace is a private research institution. Private institutions are not as good as state-owned institutions. People must pay attention to economic efficiency when doing things. A kind of technology development
Once it comes out, private institutions will definitely rush to register patents and require researchers to keep it strictly confidential. What Sun Yuzhi wanted to hint to Hirano Sadao and Nakagawa Motohisa was this kind of information.
"So, Mr. Sun, have you applied for a patent for this technology?" Hirano Sadao asked.
Sun Yuzhi said: "I don't know the specific details, but it is said that our legal department has submitted this technology to the International Patent Organization, and it should be in the review and approval period now. After a while, you will be able to retrieve our application information.
Already."
"If our Spring Mountain company wants to cooperate with your college, how should we contact you?" Hirano Sadao asked again. Since the other party has applied for a patent, there is no possibility of seizing the patent. What he has to consider now is to withdraw.
The next best thing is to see if we can establish a cooperative relationship with the other party, and then wait for the opportunity to seek the greatest benefits from the cooperation.
Sun Yuzhi pointed with his hand and said: "Our college has an information desk in the exhibition hall over there. You can go there to negotiate with our sales staff."
The Japanese that Wang Xiaochen told Qin Hai were none other than Sadao Hirano and Motohisa Nakagawa. In order to keep things secret, Qin Hai issued a hush-hush order to everyone, so these two people did not get the information they hoped to know from Wang Xiaochen.
However, Wang Xiaochen also left them an opportunity to come to Qin Hai for direct negotiations another day.
After Hirano Sadao contacted the company, he decided to temporarily change his itinerary and stay in China to meet Qin Hai. After several urgent appointments, Qin Hai finally agreed to meet with them. (To be continued, please search
Piaotian Literature, novels are better and updated faster!
ps: I recommend Feng Shaoyu’s new work "Super Extraction":
Chen Feng was just an ordinary high school student. One day, the big extraction system changed the trajectory of his life.
What is a big extraction system? It can extract everything!
Extract knowledge! Extract kung fu! Extract powers!
And Chen Feng discovered that he could not only extract the abilities of real people.