After dealing with the affairs of the Planck Institute of Plasma Physics, Xu Chuan returned to the Sichuan Sea Institute of Materials and joined the work of Academician Zhang Pingxiang, and the two discussed and studied the methods and routes for in-depth understanding and optimization of high-temperature copper-carbon-silver composite superconducting materials.

Coupled with the assistance of other researchers in the institute, basically every time a new idea or route appears, someone will immediately go to the experiment to verify the results.

Around him and Zhang Pingxiang, the entire Chuanhai Materials Research Institute is working at full speed to study the optimization route of superconducting materials.

And so the days passed.

Time flashed, and it was the end of the year, and there were ten more days, and it was the New Year of the lunar calendar.

However, the efforts of more than a month have not been fruitless.

On the road of graphene whisker (fiber) toughening, he and Zhang Pingxiang joined forces to finally achieve some phased results after discussion and repeated experiments.

In the laboratory, Xu Chuan is wearing a white lab coat and holding a glassware with a small film in his broad palm.

This is a product that he and Academician Zhang Pingxiang have optimized in the past few days by using whisker (fiber) toughening technology.

After careful observation with the naked eye, the silver-gray color of the film in the vessel did not seem to be much different from the high-temperature copper-carbon-silver composite superconducting material he studied at the beginning.

However, graphene is a material with high transparency, and the light transmittance can reach more than 97.7%.

"Is this the latest product? What is the optimized performance? Have you done a test? ”

Pinching the film, Xu Chuan looked carefully for a while and then looked up and asked.

On the side, Academician Zhang Pingxiang said: "It's not ideal, but it's much better than doped zirconia." ”

"This is the best product in your hand at present, at the same level of thickness, the toughness amplitude can reach the level of mobile phone film of polyester substrate + tempered glass combination, can withstand the impact energy of about 2.5J/m3, and the elastic modulus can reach 128.78GPa"

"At the same time, its superconductivity has been reduced, which may be related to the instability of laboratory processing, and according to statistics, the critical temperature and critical magnetic field of Tc have decreased by about 10 to 15 percent, and the critical current and critical current density do not change very much."

"It's a lot better than that. The piece in your hand has been tested, and the thermal conductivity of the core raw material was about 570W/m·k, but the thermal conductivity after toughening has increased to about 987W/m·k, which has nearly doubled. ”

"It may have something to do with the toughened graphene film material, you know, the thermal conductivity of graphene itself is extremely high."

Zhang Pingxiang briefly introduced the newly researched product, Xu Chuan thought for a while, and said: "It is still acceptable that the critical temperature and critical magnetic field of Tc have been reduced by 15%, and the accident of increasing the thermal conductivity has surprised me." ”

"Superconducting magnets are the key to magnetically confinement controllable nuclear fusion technology, whether it is a tokamak or a stellar simulator, a strong magnetic field is required to confine hundreds of millions of degrees of plasma.

"The increase in thermal conductivity contributes to the cooling rate of liquid nitrogen, which can better maintain stability."

"It's good before whisker toughening, but do you have other test items in your hands?"

Zhang Pingxiang nodded and said, "Well, there is." ”

Hearing this, Xu Chuan reached out and took out the film in the glassware, pinched the sharp corners of the two, and slowly applied pressure.

The film in the finger is not very thick, it is about the same as the tempered glass protective film of the mobile phone, and it may be thinner. Under the pressure of his fingers, the film began to deform slightly.

As the force increases, the curvature of the deformation grows larger, and eventually, with a slight 'click' sound, the film pinched in the finger shatters in half.

However, the broken film did not splash out like glass, although it was indeed broken, but at the place of the fracture, another layer of highly transparent material adhered to it, like a broken thread.

This is a graphene material optimized on high-temperature copper-carbon-silver composite superconducting materials by whisker toughening and composite technology.

In general, there are two types of graphene toughened on superconducting materials, one is through whisker (fiber) toughening technology, which allows graphene and superconducting materials to be organically combined through the interface to improve the bonding strength of the interface and the matrix.

The other layer is a graphene film layer that adheres to one side, which can also have some toughening effect and can also provide a layer of protection.

Xu Chuan pinched a corner of the fragment and put it in front of him to observe, although the transparency of graphene is extremely high, it can still be vaguely seen on the superconducting material.

"The curve of the fold can reach about 20 degrees, which is a huge improvement from before the optimization. At least it won't be as simple as a drop, a touch, or a violent vibration that shatters. ”

Looking at the superconducting film in front of him, Xu Chuan thought briefly and said.

Although he has not seen the specific detailed test data, it is enough for him to understand some basic things through visual inspection and simple stress testing.

If it can be mass-produced and maintained, this level of superconducting material can already be applied to some electrical equipment.

Zhang Pingxiang nodded approvingly, and said: "From this aspect, the optimized material toughness is indeed okay, and it is not even a big problem to be used in electromagnetic weapons and particle weapons." ”

"However, the disadvantage is that it is difficult to process, and at present, it is very troublesome for the laboratory to replicate it, let alone industrial production."

Hearing this, Xu Chuan smiled and said, "It's okay, for academic research, we don't need to consider such a thing as cost." ”

"How to reduce manufacturing costs and how to reduce the problem of productization are all things that the industry needs to consider."

"As for what is expensive, then don't even think about it."

"This is a product that can be militarized, and I am afraid that it can only be supplied to a small number of domestic manufacturers for the time being."

"At present, this level of products should not be able to be exported, even if it is nominally sold to the Institute of Controlled Nuclear Fusion or other manufacturers, it may be directly cut off by other countries."

"Of course, there will be no shortage of orders, and it will bring us great profits."

"In return, the profit from the sale of the optimized high-temperature copper-carbon-silver composite superconducting material will be distributed to you according to the standard of 10%. I have already asked people to draw up the relevant contract, Mr. Zhang, you can sign it later. ”

Although this academician Zhang took the initiative to apply to stay and help the Chuanhai Institute of Materials, it is impossible for him not to say something.

Money is just a number to him, but the communication with this academician Zhang during this period of time has benefited him a lot in the field of materials.

A world-class material academician, I don't know how many experiments he has done in the past few decades, and the empirical data and some ideas and theories accumulated in his mind can't be compared even if he is reborn as a human being for two lifetimes.

This period of exchange brought him a lot of knowledge and ideas and theories, and made him feel like he was back on campus to absorb knowledge.

With this alone, Xu Chuan felt that it was worth it.

Hearing this, Zhang Pingxiang was stunned for a moment, he really didn't expect Xu Chuan to give him the dividends of this material.

After reacting, he hurriedly refused: "This can't work, I can't ask for it." ”

"The idea of toughening graphene whiskers (fibers) was proposed by you, and the laboratory is also yours, I just did some experiments according to your ideas and requirements, but I am not eligible for this dividend."

Ten percent, which doesn't sound like much, but for high-temperature copper-carbon-silver composite superconducting materials, just to meet domestic demand, at least tens of billions or even tens of billions of superconducting orders.

Civilian and commercial use are certainly not yet in turn, and the first to meet the needs of this material should be military and top-level scientific and technological applications.

And the application of military and top technology, in fact, the demand and profit are quite large.

Throwing away the production cost or something, the net profit of a year is billions of billions, and if he takes away one-tenth, it will be hundreds of millions, which is too exaggerated.

What's more, he really didn't feel that he played a key role in this optimization process.

His previous ideas and theories, such as zirconia doping, have failed. Graphene whisker (fiber) toughening is his idea and theory, not his.

What's more, he also learned about the principles of mathematical models for material calculations and the theory of superconducting machines for high-temperature superconducting materials in the laboratory. These things are all secrets of secrets on the outside, and normally speaking, it is basically impossible for outsiders to see them, if the person in front of them is not public.

With these two points alone, Zhang Pingxiang felt that it was worth it for him to do two months of research and experimental work at the Sichuan Sea Materials Research Institute.

As for the 10 percent dividend, he can't take it.

But in the end, he still couldn't say Xu Chuan and accepted some dividends.

After the optimization of high-temperature copper-carbon-silver composites, although they cannot be widely used in all walks of life, some fields that could not be applied before can now be tried.

For example, the short-distance particle acceleration and electromagnetic acceleration that are most anticipated above are expected.

As for the effect, it will need to wait until these products are manufactured and tested in detail.

Xu Chuan didn't care about this, and from beginning to end, he always positioned himself as a scholar and scientific researcher.

Research on science and technology is his goal, but how to use these things once they are made, although he is equally concerned, is no longer the focus.

Just like now, his goal has always been to develop around the route of controlled nuclear fusion.

Whether it is high-temperature copper-carbon-silver composite superconducting materials, or the purchase of ASDEX devices from the Planck Institute for Plasma Physics, or even the truncation of orders from CERN, they are all for controlled nuclear fusion.

Compared with most scholars at home and abroad, he who has been reborn once is actually more pure; Or rather, the ideal is a little further away.

He hopes to go out of the earth and see other planets, and he hopes to explore and understand the mysteries of the universe.

If possible, he would even like to be able to use gravitons in his lifetime and try to open wormholes or passages for time travel.

Maybe he was already seventy or eighty years old at that time, and when that time came, it didn't matter if he took a spaceship to explore aliens, even if he was buried in aliens.

If it can really be done, it will be the best ending for someone like him.

PS: The first shift is delivered, ask for a monthly pass, and there will be a change at night!

(End of chapter)