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Because Xu You hopes that this superconducting material can be more used in the field of strong electricity.

Therefore, it must be made into a strip material.

But even if it is only the precursor powder of the substance, it is not so easy to prepare.

However, due to the complex structure of the 258K superconducting material, it contains a lot of elements, so it is difficult to prepare a high-purity phase.

Fortunately, after the strong cooperation between Xu You and Suanjing, a detailed plan has been worked out.

"In the first stage, the first method we adopt is the solid-state reaction sintering method. We need to prepare these raw materials according to the required ratio, and then fully mix them. Ball mill for a certain period of time, and then put them into the crucible. Sintering at a certain temperature."

Repeating this many times can theoretically improve the adequacy and uniformity of the reaction, so that the next stage of the experiment can be carried out.

The method seems simple, but many of the details require special attention.

The ratio of raw materials must be very precise, and within the controllable range, there should be no slight error.

The temperature during sintering also needs to be strictly guaranteed. A little carelessness will cause all the previous work to be done in vain.

After the sintering is completed, multiple processes such as co-precipitation and atomization are required to finally obtain the material precursor powder with a high phase content.

For a whole month, the materials project team of Jijing University finally mastered the precursor powder preparation process of 258K superconducting materials.

Through testing this material, Xu You determined that the superconducting critical temperature of this material is indeed around 258K.

This proves that the previous simulation of superconducting materials by sea islands is highly consistent with reality.

The next work is the most critical strip preparation process.

As early as when Xu You was researching superconducting materials, he was stagnant for a long time because of the problem of strip material technology.

In order to make superconducting materials widely used, the strip process can be said to be a problem that must be solved.

Xu You once again called the project team members together to explain the work content of the next stage.

"Since the 258K superconducting material is as brittle as ceramics, we need to process it into a thinner strip material. Let me talk about the main steps."

"First, put the precursor powder of the material into a silver alloy tube with a diameter of 1mm. The filling degree needs to be strictly controlled at about 35%, and the front-to-back error should not exceed 0.5%."

"A plurality of silver tubes that have undergone the same operation are bundled together and put into a large silver tube. After several times of drawing, the diameter is also reduced to 1mm."

"Continue rolling the silver tube to reduce its diameter to a tenth of its previous size, and place it in a furnace for heat treatment..."

There are dozens of simple steps alone, not including the various details involved in each step.

The entire process is far more complicated than the material preparation in the previous stage.

After repeated experiments, the project team failed countless times.

Finally, within three months, the forming work of the 258K superconducting material strip was completed.

Watching the 500mm long strip being successfully processed.

The whole project team is very excited about this.

The efforts of these days are finally not in vain!

"It can be processed into a 500mm strip material, which proves that this material can be used as a superconducting cable. In the near future, we will enter the real superconducting era!"

Members of the project team know what this means.

Compared with traditional cables, superconducting cables of the same size can achieve several times the power transmission capacity.

More importantly, the superconducting critical temperature of 258K superconducting materials is very high, and it does not require too much cost in refrigeration.

Once this superconducting cable is popularized, we can achieve almost zero-cost power transmission!

Since the project team has been working continuously for more than four months, after the research work, Xu You asked everyone to take a good rest for a few days to adjust their physical and mental states.

As for Xu You himself, due to long hours of high-intensity work, his fatigue has reached a critical value.

After a full night's rest, on the second day, Xu You prepared to sort out the project results and submit them upwards.

"Teacher, don't you rest today?"

After Xu You came to the laboratory, he found that Lin Shi had come to the laboratory before him.

"Of course I don't need to rest for so long, one night's sleep is enough. But why didn't you rest for two days, you are tired enough during this time."

Xu You knew that his energy was different from ordinary people.

Even I have reached my limit, and the others must have been exhausted long ago.

"The teacher doesn't need to rest, and I don't need to rest either. There is still a lot of work to be done on the property measurement of 258K superconducting materials. I have to finish these tasks as soon as the last project is over."

The main properties of the 258K superconducting material have been measured. What Lin Shi said is the kind of extremely detailed and all-round measurement work.

Xu You looked at Lin Shi and found that Lin Shi's mental state was indeed not bad, unlike other members of the project team, his face was full of fatigue.

Being able to possess energy beyond ordinary people is also one of the necessary characteristics on the road of scientific research.

"Lin Shi, I'm really happy that you can work so hard. If you feel that your body is fine, continue with the experiment."

"Of course it's okay. I'm in good health, and those boys' physical strength is not as good as mine. Well, teacher, you can do your work. I will report the results to you after my work is finished."

It took Xu You half a day to sort out the results and submit them upwards.

The higher authorities attached great importance to this achievement, and immediately held an emergency meeting to discuss it.

None of them expected that in less than a year since the establishment of the normal-temperature superconducting project team, the project team has actually made such an important achievement.

Even at a temperature of 258K, there is still a distance from the strict definition of "normal temperature".

But such a high superconducting critical temperature has already surpassed people's cognition of "high-temperature superconductors".

Compared to those "pseudo room temperature superconductors" in the ultrahigh pressure state.

This material is more worthy of being called a room temperature superconductor.

After urgent deliberations, several decisions were made.

First of all, the mass production of 258K superconducting material strips will be started immediately.

Now that Xu You has led the project team, the research has been carried out in such detail.

The actual production work will save a lot of trouble.

Secondly, it is the project planning for superconducting cables.

Before, we have built a kilometer-level superconducting cable in Jijing as a trial run of the superconducting cable.

After researching a new type of superconducting material, it is definitely necessary to carry out experimental construction and trial operation first.