Super military empire

Regarding depleted uranium alloys, Liu Yijiu had no idea that there was research in this area in the Ninth Institute.

His father knew that this was normal, and the layout had been studied since the 1960s, and it was not a problem. The problem was that he didn't know how the old man made the big guys agree to carry out research in this area.

Although the difference between uranium-235 and uranium-238 is outrageous, for those who do not understand, there is absolutely no difference.

Since the history of the Republic, there have been only nine institutions that have studied the use of weapons.

As for the peaceful use of nuclear energy, it seems that the Republic did not have anyone specializing in this aspect at the beginning!Even the nuclear submarine reactors seem to be in charge of the Ninth Academy.

He did not speak, but silently followed Liu Suxue to the front.

Inside, I didn't feel the lack of air circulation or hold my breath because of going deep into the mountain.This mountain has such benefits. It is cold in winter and cool in summer. It doesn't even need air conditioning. There shouldn't be much temperature difference in the whole cave throughout the year.

"The temperature difference inside is no more than six degrees. There is no air conditioning. It is a natural constant temperature cave. The highest temperature is 24 degrees and the lowest is only 18 degrees. The fan outside is mainly to reduce noise..." Liu Suzhi faced several people Explained.

But it is also true, even in the main base over there, you don’t have to wear too thick in winter, and you have to wear a jacket in summer.

"The area outside this area is mainly for graphene research. This area requires constant temperature, but we have not made progress in compressor technology..."

Looking to the front, the thick glass separates a large area, but these glasses are not very large pieces. Almost each piece is two meters in length and one meter in width, and is connected with aluminum alloy in the middle. It's pretty good to get up.

"The study of graphene needs a constant temperature? If there is dust, how can this be solved?" Liu Yijiu frowned and asked.

The research of graphene does have relatively high environmental requirements, but it is definitely not dust-free and constant temperature.

"It's not that the environment for graphene research needs to be kept at a constant temperature and dust-free, mainly because the inspection equipment inside needs to be kept at a constant temperature and dust-free, a 10,000-fold optical microscope, and a 50,000-fold electron microscope. Smuggled back from Europe." Liu Suxue smiled bitterly, "There are several testing devices in it. Three people from the Situ family died..."

Liu Yijiu sighed.

There are always many unsung heroes silently giving their lives for the rise of the Republic’s military industry.

In a small room where the entrance was isolated, the upper and lower teeth were blown by a powerful fan, before putting on the white gossip inside the cabinet, and then putting on rubber shoes. After removing the static electricity on the body, it entered the glass partition. In the laboratory, there are only three old-fashioned optical microscopes in an area of ​​more than 100 square meters, and an even larger electron microscope.

Several researchers in white lab coats were busy inside.

It did not divert their attention just because a few people came in.

"It's so simple inside?" Liu Yijiu frowned and said.

It stands to reason that it should give people a sense of science fiction, at least that kind of tall feeling?

But there are only a few empty devices, a few people, and then a few tables.

"This is only used to detect the structure of various materials and analyze the grain structure of the material. The physical and chemical analysis room is next to it..." Liu Suxue did not introduce Liu Yijiu about what is currently being researched and tested.

It's all the same thing anyway, and it's not often used here.

Regardless of graphene research or research on depleted uranium alloys, none of these things can be solved in a day.Graphene, we must constantly use various mechanical and chemical processes to experiment to see how this material can be produced on a large scale.

As for the depleted uranium alloy, it is necessary to test the chemical formula and the production process under various physical conditions.

Liu Yijiu nodded.

After all, these things were very difficult things for the Republic in the 1960s.

The equipment inside, even the main base lacks these equipment, and they are not allowed to use it. It can be thought of the importance attached to these equipment.

"Don't worry, there will be more advanced equipment in it in the future. Before long, the Americans will take the initiative to send it to us." Liu Yijiu nodded, did not say anything, the basics are like this, so he Ten years have passed since graphene was discovered, and it is not clear that much progress has been made.

He knows the process and formula for the large-scale preparation of graphene, but to be on the safe side, he absolutely cannot propose it now. No matter whether it is a chemical method or a physical preparation process, it cannot be said.If this were brought up now, it would definitely be suspicious.

Only Liu Suxue and Wang Shunyi knew the identity of Liu Suzhi. Even the big men did not know his identity. After all, Liu Suzhi was a more powerful scientist than Qian Lao.With such an identity, he can completely fool the bigwigs. Moreover, this base does not require a penny from the country, all of which are raised by Liu Suzhi from Chinese people around the world.

Of course, whether this is the case, only Liu Su knows himself, and the big guys know it too.

Get out from the inside and continue to the front. Inside the mountain near the right, there is a small door. The height of the door is only two meters and the width is less than two meters.

At the door, there is also a small room, in which there are more than a dozen clothes and helmets like space suits.

Seeing Liu Yijiu and others in a daze, Liu Suxue smiled and explained to several people.

"The front is the research area of ​​depleted uranium alloy. According to our research on uranium-238, although the radioactivity of this element is much lower than that of uranium-235, it is still isolated to avoid affecting the people in the entire base. All of the walls of China are separated by five-millimeter-thick lead sheets for a total of ten layers. The people inside are all wearing radiation-proof suits made of thin lead sheets, and the outside is coated with copper-nickel coatings..."

"How heavy is this dress?" Liu Yijiu's mouth twitched.

This should be the first generation of metal radiation protection suits.

In order to resist x and gamma rays, that is, the radiation rays of uranium element, only lead and copper nickel and other metals are used to make clothing, which can properly protect researchers.

Seeing this in front of you, don't think about it, Liu Yijiu knows that this is the first-generation lead suit, which is absolutely light in weight.

If his father has knowledge of plastics, perhaps he should come up with modified polyethylene (pe) and polyvinyl chloride (pvc) materials to make better protective and lighter radiation protection suits.

"The total weight is 16.23 kilograms..." Liu Suxue also smiled bitterly. "Because of this, there are very high demands on the physical strength of the researchers. Each time they work in it, it takes up to four hours..."

"Forget it, the radiation of uranium-238 is not too strong, so you don't need to wear this." Liu Yijiu heard the weight of 16.23 kilograms and immediately gave up wearing this.

Unless the research here is uranium-235.

"In a short time, there is no problem without wearing a radiation suit." Liu Suxue also nodded.

When he was about to enter that door, Liu Yijiu asked Li Rui to stay outside. Although the radiation of uranium-238 was not very strong, what if...

Li Rui was very dissatisfied with this decision, but in the end he could only stare at Liu Yijiu with a grimace and a pouting face as he entered the room where he didn't know what was inside.

"Now for the depleted uranium alloy, is there any finished product? It is not used to make tank armor. If you can make single-core bullets or armor-piercing bullets..." Just after entering the door, you can see that there are many hundreds of meters in the space. People are busy, which is obviously different from what we saw earlier.

On a workbench not far from the door, Liu Yijiu saw a palm-sized alloy. When he took it in his hand, he immediately sank and almost didn't hold it. His eyes lit up.

There are a lot of equipment in it, as well as some tensile machines and pendulum impact testing machines for impact testing. Of course, there are also many other test tubes, beakers and glass dishes for chemical analysis.He even saw a few small high-temperature furnaces!It's too messy, it's not like a laboratory at all, but more like a small production test workshop.

"We are currently experimenting with an alloy, adding molybdenum, niobium, titanium and trace heavy rare earth elements lutetium to uranium-238. The effect is very satisfactory. However, this large-scale production is not feasible and the cost is too high. According to our current process calculation, The cost of a ton of this depleted uranium alloy will exceed 800,000 US dollars..."

Liu Suxue shook his head.

"..." Liu Yijiu was completely speechless.

Eight hundred thousand one ton, still US dollars!

This thing is even more expensive than titanium alloys. Although the effect of depleted uranium alloys to make armor-piercing bullets is very good, the cost is too high.It is not affordable for a country with a poor economy like the Republic.

Lutetium, a heavy rare earth element, seems to have only a few million tons of oxide reserves on the earth. They actually used this for research on depleted uranium alloys!

Pure lutetium is a silver-white metal, which is the hardest and densest metal among rare earth elements; it has a melting point of 1663°c, a boiling point of 3395°c, and a density of 9.8404.Lutetium is relatively stable in the air; Lutetium oxide is a colorless crystal, which dissolves in acid to form the corresponding colorless salt.Lutetium is mainly used for research work, with few other uses.

This thing, even in his own time, was rarely used in industrial production.

"What if you don't use lutetium?" Liu Yijiu gritted his teeth and asked. According to the current cost, if lutetium is not used to extract the extremely troublesome heavy rare earth element, the cost may drop a lot.

"No way, it's still a matter of process preparation. There are still other formulas that are still being researched. If powder metallurgy can be realized, the cost will drop a lot..." Liu Suxue said, licking his lips.

Powder metallurgy!