Then the surface is covered with a layer of alumina by ion deposition to form a dense shell.
It looks like a plain alumina plate, but there is actually a dry Kun.
He treated the composite board and handed it to an assistant, "Zhang Wei took it for calorific value test."
Zhang Wei, a public face, carefully took the composite plate and sent it to the laboratory material physicochemical testing room for surface testing
Huang Xiuyuan followed him to the testing room.
As several researchers conducted a series of tests on the composite board exhibition, Qiao Qingshi, a researcher from hot materials, tried to talk, but found that his tongue seemed to be knotted.
Because the thermal figure of merit of this composite plate in front of them exceeded their expectations.
The so-called thermal figure of merit is the symbol of thermal conversion efficiency of materials. At present, it is found in the field of materials that the highest thermal figure of merit in thermal materials is about 6, which is a material that can be prepared in small quantities in the laboratory.
Qiao Qingshi, Zhang Wei and others know that several technical routes in the field of thermal materials, including two-dimensional multilayer films, superlattices, bismuth nanowires, carbon nanotubes, quantum well systems, cat-eye-like structures, and Si-Fe-W alloys, are all stuck, and they also do not have mass production processes.
And the thermal figure of merit of composite board in front of them was as high as 1137.
The thermal figure of merit of mass-produced thermal materials in the market is generally about 2~3.
The thermal figure of merit of composite board has reached about 379~4 times that of ordinary thermal material.
Many people don’t know what this means. Thermal materials should be mainly used in the fields of temperature difference, thermal refrigeration, sensors and temperature controllers.
Ordinary thermal materials with thermal figure of merit of 2~3 usually have a thermal conversion efficiency of about 6~%.
When the thermal figure of merit of thermal materials rises to 1137, this means that the efficiency of thermoelectric generator will rise to about 24%.
Although the thermal efficiency of this material is not as efficient as 3%, gallium arsenide solar panels are not as efficient as steam turbines.
However, thermal materials have many advantages, such as simple structure, which can be made by adding wires to the thermal materials.
In addition, the requirements for hair conditions are not too strict, and hair can be sent if there is a temperature difference.
"So that’s it. It’s a two-dimensional multilayer thin film with ultra-fine nanowires, and the angle estimation of three-line cross-weaving of phosphorus nanowires is the profit trap system." Qiao Qingshi said to himself.
Huang Xiuyuan nodded with a smile. "Yes, the combination of triple-blessing multilayer film, ultrafine nanowire and quantum well system lowers the thermal conductivity and increases the derivative and Zeebek number."
Qiao Qingshi’s eyes are full of shock.
There is a special formula for thermal figure of merit Z.
Z = S2 σ/k (S Zeebek number, σ conductivity, temperature, k thermal conductivity).
From the formula, we can know that the factors affecting the thermal figure of merit are Zeebek number, temperature, conductivity and thermal conductivity.
The two most important elements are conductivity and thermal conductivity. If high heat figure of merit is to be achieved, the partial conductivity must be high and the denominator thermal conductivity must be as small as possible.
However, in reality, the conductivity and thermal conductivity are just like a conjoined twins, and few materials can satisfy both high conductivity and low thermal conductivity.
Qiao Qingshi marveled that "nano-scale does put a lot of size effects, but this idea of General Manager Huang is definitely a revolution in the field of thermal materials"
"Little flattery haha" Huang Xiuyuan laughed.
Qiao Qingshi shook his head. "This is not flattering. When I was in the Chinese Academy of Sciences, my former boss took tens of millions of lessons in that project to come up with a Z42 high or low. It is possible for you to win the Nobel Prize as soon as this material comes out."
"Don’t think about the explosive award. It’s just a chicken rib." Huang Xiuyuan picked up the composite plate. "Let’s continue to discuss this material."
"Mr. Huang still wants to continue to improve?" Qiao Qingshi is not calm.
"There is no end to science. I think there is still the possibility of further improvement on sulfur nanowires."
"Many foreign teams have studied whether the Z of bismuth sulfide nanowires can be high. Can we consider one?" Qiao Qingshi suggested
However, Huang Xiuyuan shook his head. "Bismuth metal is rare and expensive, and it can be estimated to be an important day in industrial mass production after laboratory research."
"Well …" Qiao Qingshi immediately react.
At present, the main materials of composite board developed by Huang Xiuyuan are phosphorus, sulfur and alumina, which can be produced on a large scale.
However, bismuth metal is less than silver, although the first problem of China’s bismuth ball is that this rare metal resource is not suitable for mass production.
If it is a precision instrument, it can be considered.
At present, the phosphorus-sulfur-alumina composite plate has a heat figure of merit of 1137, which is very strong and has the conditions for mass production.
Huang Xiuyuan thought for a while and didn’t completely deny the direction of bismuth nanowires. "If you are interested, you can study bismuth nanowires in this direction. Our company can still afford it. If the effect is good, you can consider high-end production."
"Then I’ll study one."
There was a great discussion about the development of new thermal materials.
During the discussion, Huang Xiuyuan took them to weave various types of thermal materials, so it is extremely difficult for the thermal figure of merit to break through the new peak base of 1137.

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