"How? You ready? Lin Yu watched the logistics staff go in and out of the laboratory.

"Ready." The person in charge gave Lin Yu an OK.

"Okay, let's start experimenting." Lin Yu confirmed that at the beginning of the experiment, no one is allowed in the ultra-high temperature laboratory, although the current high temperature protective clothing can isolate the high temperature above 1000 degrees Celsius, but in this laboratory can achieve a high temperature of 3000 degrees Celsius.

It can be said so ruthlessly, even if you put on a fire protection suit, as long as you go in, the person will be instantly evaporated by the high temperature, leaving only the inorganic salts in the body.

If the pressure reaches a certain level, the carbon in the human body will crystallize, and at this time, due to the high temperature and high pressure conditions in the laboratory, the carbon will become diamond or diamond.

The synthetic temperature of man-made diamonds is between 1450 degrees Celsius and 2000 degrees Celsius.

At present, the ultra-high temperature laboratory opened to the outside world in China, that is, the laboratory for commercial use, can reach the point of 2,600 degrees Celsius, and every temperature increase is a huge challenge to science and technology, and a test of a country's scientific research ability.

The ultra-high temperature laboratory here can reach a high temperature of 3,000 degrees Celsius, which is indeed the top configuration in the country.

"As long as the gallium oxide coating can withstand the high temperature of 2,000 degrees, the goal has been achieved." One member said.

"Consultant Lin, have you considered the idea of using gallium oxide as a matrix to make a composite ablative material?" Another member asked Lin Yu.

"I've thought about it, but I don't have much hope for gallium oxide as a substrate for ablation."

Ablative materials are very important things, and there is no one other than space engines that can surpass ablative materials in importance.

The biggest role of ablative materials is to protect the inside of the rocket, when the space return capsule enters the earth's atmosphere, the outer wall of the capsule will rub against the atmosphere, this friction is very intense, and the resulting heat is very amazing, how powerful?

Let's put it this way, if the main components of a meteorite are iron and nickel, then when it falls from space into the Earth's atmosphere, the surface of the meteorite rubs against the atmosphere and the temperature can reach up to 3,000 degrees Celsius, which is the temperature that can be achieved by ultra-high temperature laboratories.

At such temperatures, small iron meteorites can easily disappear in the atmosphere at a thickness of several thousand kilometers, and their volume and mass will be reduced by at least ten times.

Here's a practical example:

The speed of the Kyushu (10) No. 3 spacecraft of the Huaxia manned space flight from space to the ground is about 7.9 kilometers per second, which is almost 20 times the speed of sound, and there are three Chinese astronauts in the return capsule, when the return capsule passes through the earth's atmosphere, the outer wall of the capsule will rub violently with the atmosphere, which will produce a large amount of heat, if this heat cannot be dissipated in time, then the three people in the return capsule will directly turn into fly ash.

The rocket generally has four layers of protection, one is the outermost layer of ablative material, which is the main heat insulation force, the second layer is the heat insulation tile, the ablation material absorbs heat through various physical or chemical methods such as melting and sublimation, and the residual temperature is about 1000 degrees Celsius, so the heat insulation tile can easily block these heat invasions.

Then there is a hollow layer, which uses air for insulation, and for the last time continues to be insulated with thermal insulation material.

In order to protect astronauts and space exploration instruments, such thermal insulation measures are necessary.

After waiting for a few minutes, the temperature of the ultra-high temperature laboratory showed that it had reached 2,000 degrees Celsius, and Lin Yu and the three of them waited anxiously in heat-insulating suits.

After stopping the heating and cooling down slightly, Lin Yu and the three walked in, and the gallium oxide paint still stayed there in good shape and did not change much.

"Consultant Lin, it's a success." The two people beside Lin Yu high-fived each other.

Lin Yu breathed a sigh of relief, although he had simulated it in the system laboratory, he still couldn't help but sweat in reality.

"Yes, since it's used as a paint, then this level is already very good."

GaN coatings are not used as the primary insulation, but are applied to the surface of the ablative material and are chosen as secondary insulation and color sprays.

"That's it." After Lin Yu and the three of them recorded the experimental data, they greeted the staff of the logistics department and asked them to clean up the experimental site.

Humans can reach temperatures far more than 3,000 degrees Celsius, with the highest temperature reaching 510 million degrees Celsius, the temperature produced by the collision of two particles that are accelerated to just one-ten-thousandth of the speed of light.

Last year, Huaxia's artificial solar project, the EAST Superring, created two world's bests, enabling an "artificial sun" to burn at 120 million degrees Celsius for 101 seconds.

The artificial sun is actually another name for the "nuclear fusion reaction device", because this device has the same reaction principle as the sun.

In fact, Huaxia's controlled nuclear fusion technology is already in a leading position in the world.

"Let's go, let's submit the report and then apply to make gallium oxide composites."

Lin Yu and the others handed in the report, and then applied to the laboratory and experimental materials to conduct experimental research on composite materials.

"I think gallium oxide should be used as a matrix, which can be made into an ultra-high temperature ceramic, and then add reinforcing fibers made of carbon nanotubes to improve the strength and toughness, and the carbon-gallium oxide material should have good thermal insulation performance."

"I think you can combine zirconia and gallium oxide, use zirconia as a ceramic matrix, add gallium oxide particles, and finally fill it with resin, which should be able to combine various materials into a good material."

"Advisor Lin, what do you think?" The two of them argued, so they looked at Lin Yu together.

"Let's try it all, and send it to the experiment together after the final production, I still say the same thing, I am not optimistic about this material as an ablative material." Lin Yu experimented with many combinations in the system research institute during this time, but none of them met his wishes, and there were no composite materials about gallium oxide in the information given by the system.

If it weren't for the fact that the material didn't exist at all, the properties and benefits of the material would not be fully realized until five years later.

Now that they have the corresponding manufacturing method, the three of them spent half a month together to make carbon-gallium oxide composites, as well as zirconia-gallium oxide composites.

As soon as the samples were made, they applied for the experiment in the ultra-high temperature laboratory, and stood outside the laboratory in a heat-insulating suit again, Lin Yu already had his own judgment, he felt that this experiment would definitely fail, so this time he was very calm.

On the other hand, the two people around him still looked anxious.