Came to the experimental area with Dean Yang.

The more Chen Zhou looked at the slightly smug expression on Dean Yang's face, the more he felt that he was being tricked.

But there is a way to have a routine.

It is also an opportunity given by Chen Zhou himself.

In the final analysis, he didn't actually think about the topic of the graduation thesis of the Department of Physics, and it was good to have Dean Yang "give advice".

Can you still use a national laboratory?

This is Chen Zhou's careful thinking that he would rather be routined.

Dean Yang came to the experimental area and began to check the preparation of the experiment, and Chen Zhou followed Yang Yiyi as usual to familiarize himself with the process of applying the experiment.

Although Chen Zhou has gone through all the information, it is still an indispensable link for the observation of the experimental site.

"Yiyi, let's go. Chen Zhou said with a smile.

"Hmm. Yang Yiyi nodded lightly and led the way in front.

There is not much difference in the overall experimental setup, but the focus of the experiment has changed.

Previously, the focus was on the optimization of diodes, but now it is the study of material surface modification, but in fact, it is more concerned about the high-power pulsed ion beam itself.

High-power pulsed ion beams, also known as strong pulsed ion beams, are being used in the field of materials and are developing into new material surface modification technologies.

Because in addition to the element doping effect of ion implantation, it can also take advantage of the thermodynamic effect induced by strong pulse energy deposition, which is expected to break through the limitation of ion range on the thickness of the modified layer.

And the efficient use of ion dose and energy, has become a new generation of low-cost, high-efficiency, high-productivity, practical ion beam material modification and synthesis process.

At present, in the world, some laboratories with strong pulse ion beam devices, such as Japan, United States, and Russia, are mostly laboratories that were originally engaged in light nuclear fusion research.

In this paper, the technologies for the preparation of thin films and the synthesis of nanopowder materials are developed by using the ultra-fast heating, melting and curing of metals treated by strong pulse ion beams.

For example, the United States has set up a QM surface treatment center, which specializes in the use of strong pulsed ion beams for ultra-fast molten metal surface strengthening process.

In China, in recent years, with the support of the National Natural Science Foundation of China and the special fund for doctoral programs in universities, the surface modification technology of strong pulse ion beam materials has been developed.

A comprehensive basic study has been carried out on the main mechanism of the strong pulse energy effect, the thermodynamic process induced by ion irradiation, the surface crater phenomenon, and the large-area uniform ion beam technology.

This experiment is to study the surface modification of 30SiMn2MoVA steel, its microstructure and corrosion resistance.

Then, through the experimental data, it is finally fed back to the project itself.

That is, the study of feedback to the strong pulse ion beam itself.

This is because the current high-current ion beams used for material performance modification have certain limitations.

The most obvious manifestations are that the penetration depth is too shallow, the failure rate is high, and the energy distribution of the ion beam is uneven.

For example, the acceleration voltage of the 6cm large-spot strong current ion beam developed by the Institute of Strong Current in Northwest China, Russia is only 30kV, and the penetration depth of the surface treatment of ordinary steel is only a few microns.

Of course, this is Chen Zhou's guess based on the general direction of the current topic.

The specific research progress is still controlled by Dean Yang.

After thinking about it, Chen Zhou looked at Yang Yiyi and asked, "Do you know what 30SiMn2MoVA steel is?"

Yang Yiyi chuckled and said, "Are you planning to test me?"

Chen Zhou was slightly stunned, and then said softly: "Then how dare I? I am asking Teacher Xiao Yang for advice." ”

Hearing Chen Zhou's words, the corners of Yang Yiyi's mouth hooked up a touch, and she was really good at talking.

But unlike Yang Yiyi's happy smile, not far from them, Ma Zihao was checking the experimental device.

Hearing the conversation between the two, Ma Zihao grinned unconsciously, can you not sprinkle dog food? I don't know if the scientific research dog here is also a single dog?

Ma Zihao's movements couldn't help but speed up a few points, fully demonstrating his quick eyes and hands as a qualified scientific research dog.

"30SiMn2MoVA steel, in fact, is an alloy structural steel, with excellent comprehensive mechanical properties such as high strength and high toughness. Whether it is in marine development, automotive industry, energy development, petrochemical industry and other fields, it has a wide range of applications. "Yang Yiyi's homework is absolutely sufficient.

Yang Yiyi has a characteristic, after she chooses the path of physics, her goal is clear.

Moreover, she often has her own thinking and preparation for subject research.

Yang Yiyi glanced at Chen Zhou and asked rhetorically: "Then do you know what is the biggest purpose of the research on the surface modification of 30SiMn2MoVA steel?"

Chen Zhou thought for a moment and said his speculation just now.

But after Yang Yiyi heard this, she shook her head slightly: "What you said is only one aspect, and it is the general direction of the subject, but in fact, there is another reason. ”

Chen Zhou showed a puzzled look, thought about it carefully, he thought of a possibility, and said, "You mean the specific application?"

Yang Yiyi nodded and laughed softly: "Yes, this is originally applied research, you are thinking too much." ”

Looking at Chen Zhou, who was slightly embarrassed, Yang Yiyi continued: "Actually, 30SiMn2MoVA steel has always been used as a kind of military parts steel. Its working environment is changeable, and the corrosion resistance of the material surface is greatly affected. ”

"I see. When Yang Yiyi said this, Chen Zhou suddenly brightened.

He was thinking, how can the subject of the national laboratory be pure technical research?

"Figured it out, right?" Yang Yiyi showed an expression that was about to praise me.

"Well, sure enough, Teacher Xiao Yang is amazing! Xiao Chen has been taught!" Chen Zhou said with a smile.

"Of course. Yang Yiyi said proudly.

Compared with the past, she has always been praising Chen Zhou, and this time she was finally praised by Chen Zhou once, and she was naturally very happy.

However, Yang Yiyi did not intend to hide Chen Zhou, she looked at Chen Zhou seriously and said, "Actually, I have a secret to tell you. ”

Chen Zhou saw her so serious, and immediately asked curiously, "What secret?"

Yang Yiyi's expression was whole, and he said seriously: "Actually, 30SiMn2MoVA steel is indeed a kind of steel for military parts. ”

"Huh?" Chen Zhou didn't quite understand.

"But the purpose of our research, in fact, I guessed just like you, hahaha. The serious expression on Yang Yiyi's face suddenly turned into a playful smile.

Chen Zhou shook his head with a smile, and immediately reached out to grab Yang Yiyi, ready to punish him.

Unexpectedly, Yang Yiyi was prepared, so she avoided with a smile.

At this time, there was a light cough not far from the two.

Chen Zhou and Yang Yiyi looked at each other.

Peng Jia said quite embarrassedly: "That, I'm bothering you, go first...... Let's go to the console and get ready to experiment. ”

After speaking, Peng Jia turned around in an instant and left quickly.

The atmosphere in this laboratory has really changed......