Chapter 169: Having been in the system, it’s just different

After having many experiences in carrying out projects on my own.

Xu You is accustomed to setting the starting point of his thinking at a relatively high level.

This is a way of thinking that Xu You has never had before when competing.

When you are given a clear problem, all we need to do is to solve the problem according to the conditions of the problem.

Even though the difficulty of the questions varies, there is no difference at all.

And in actual scientific research work.

There are never any fixed issues.

Choosing a topic itself is a very particular matter.

Of course, Xu You has not stopped working now.

In the deep learning state, Xu You can think about another problem while doing simple work.

In fact, nickel-based high-temperature coating, as a commonly used titanium alloy coating, does not have any problems in itself.

Because the nickel-based alloy coating has high bonding strength, good wear resistance, and excellent corrosion resistance.

But at the same time, nickel-based alloy coatings also have their own limitations.

Due to the different diffusion rates of elements in the nickel-based alloy coating and the matrix, the differences will cause Kirkendall voids.

As a result, the coating becomes unstable and the bonding strength between the coating and the substrate is reduced.

Xu You thought that maybe he could consider it and try another material.

Xu You quickly thought about various materials that could be used as coatings in his mind.

Because Xu You had previously studied metal materials in Xuzhou, he was quite familiar with the properties of various materials.

Recently at the launch center, Xu You also read a lot of aerospace-related books, and he has a relatively good understanding of a lot of aerospace knowledge.

"That's right, aluminum!"

At this time, Xu You suddenly remembered the familiar metal element "aluminum".

At the very beginning of his superconducting experiments, Xu You deduced that aluminum atomic clusters might have high-temperature superconducting properties.

Xu You knows a lot about the element aluminum.

The reason why Xu You thought of using aluminum as a coating is because the aluminum element can be oxidized at a certain temperature to form a dense AI2O3 oxide film, which can theoretically effectively protect the substrate.

Of course, if you just use pure aluminum as a coating, the effect will definitely not be so ideal.

If such a simple solution was feasible, someone would have done it long ago.

If you want to have better coating properties, you have to think from the perspective of aluminum alloys.

At this time, Xu You had a new idea.

"If the coating is prepared from the direction of titanium-aluminum alloy, it is probably a more ideal direction."

Titanium-aluminum intermetallic compound is an emerging high-temperature structural metal material.

Because the chemical composition difference between the titanium-aluminum coating and the titanium alloy matrix is ​​relatively small.

At high temperatures, the degree of interdiffusion between the coating and the substrate will also be very small.

This will make the titanium-aluminum coating have very good oxidation resistance.

Moreover, the aluminum element also plays a role in grain refinement and strengthening, which can improve the thermal stability of titanium alloys.

Thinking of this, Xu You thought that he could try to use titanium-aluminum alloy instead of nickel-based alloy in the software to conduct new simulation experiments.

Of course, a lot of work needs to be done to simulate using a new material.

If the properties of the material cannot be reflected in detail in the software.

The simulation effect will be very poor.

In order to present the properties of titanium-aluminum alloy materials as accurately as possible, Xu You thought of his father Xu Zhou again and asked Xu Zhou for help.

"Professor Xu, have you ever made titanium-aluminum-based alloys?"

"We've done it before. It's a new type of material. Why, is this material going to be used in aerospace?"

"Please forgive me for not revealing too much information to you. If it is convenient, can you send me some detailed reference materials?"

"Well, of course there's no problem."

Xu Zhou vaguely felt that this time when Xu You talked to him, his attitude was more polite than before.

Naturally, Xu Zhou would not refuse such a trivial matter, let alone his own son asking for help.

"By the way, my paper will be published in Science soon. Thanks to your theoretical model and function formula, otherwise I would never be able to write this paper. I'll make you some delicious food when I get back.

!”

"It's an honor for me to be able to help Professor Xu. I can't wait to taste Professor Xu's craftsmanship."

Although Xu You's words were full of politeness.

But Xuzhou always felt something strange.

"Could it be that... after staying in the system for a while, my speech became official?" Xu Zhouxin said.

But compared to the somewhat arrogant and domineering attitude before, Xu Zhou felt that this was quite good.

After receiving Xu Zhou's information, Xu You used his free time to start simulating new materials.

Although the work in the team itself is already very hard.

But Xu You relied on his deep learning status and super energy to squeeze out some time and gradually perfected the simulation part of the new material.

By comparing with real experimental data, it is proved that Xu You's simulation effect is still very good.

In simulations, the performance of titanium-aluminum-based alloy coatings is indeed good, but it also has its own problems.

In binary titanium-aluminum-based coatings, when the service temperature exceeds 850 °C, the anti-oxidation performance will also be seriously reduced.

In order to confirm that the conclusion of this simulation was correct, Xu You also specifically asked Xu Zhou to help and conduct an experiment.

"Professor Xu, could you help me do some experiments? They are of no benefit, and they need to be kept secret for the time being."

Xu Zhou was in a very good mood because he had just published an article in "Science", and he would definitely try his best to meet Xu You's requirements.

"It's okay. As long as the budget is not too large, it will be no problem. Dad, I have enough funds now. If you have anything, feel free to mention it."

Xu Zhou knew that the topic Xu You wanted to do was definitely not an ordinary topic.

Even if it may not be published for the time being, the value in the future is likely to be very great.

After Xu You explained his idea to Xu Zhou, Xu Zhou quickly started the experiment.

After obtaining the experimental results, it was also proved that Xu You's simulation conclusion was basically correct.

"Xu You, in binary TiAl coatings, there are strict requirements for the amount of Al. Around 850°C, the oxidation resistance of the coating begins to decrease sharply."

"Thank you for your hard work. This is very close to my prediction."

After coming to this preliminary conclusion, Xu You did not go to talk to Shen Ye or other staff of the launch center about this matter.

Xu You knew that such a conclusion could not be immediately applied to the application of aerospace materials.

After all, this is not a university, and the purpose is not to publish papers, but to apply.

Xu You still needs to draw more valuable conclusions before he can consider the next step.
Chapter completed!