My Pet is a Snapping Turtle

  Chapter 351 requires a professional body

  I bought all the things I needed.

   Seeing these things, Liu Yong trembled a little with excitement, quickly put the piece of metal in his hand on the table, and glanced at these things with satisfaction.

   Although they are all common things, such as some common chemical utensils and chemicals, such as common electronic scales, cutting tools and so on.

  Liu Yong turned on the ventilation fan, closed the blinds, and began to personally verify.

  The first thing to verify is the density of this unknown metal, so Liu Yong picked up the cutting tool and started cutting.

  After a while, Liu Yong knew that although this metal is very light, its hardness is not low, and it is definitely much harder than ordinary steel. After cutting for a long time, it took a lot of effort, and then he cut a small piece with an electric cutting tool.

  The cutting surface has obvious metallic luster. Liu Yong further affirmed that this is metal, which may be produced by alien civilization.

  Weigh the weight first.

  Weighed the cut piece of metal on an electronic scale, and it weighed 27.35 grams.

  Using a measuring cylinder to measure its volume, Liu Yong calculated it with a calculator, and the density was 2.6.

We know that the density of iron is 7.8, the density of titanium alloy is about 4.5, the density of aluminum alloy is 2.7, and the density of this gray-black metal is 2.6, which is actually slightly higher than that of aluminum alloy. Take it easy.

   This is more awesome!

  It is so light, it is lighter than aluminum alloy, but it is not as soft as aluminum alloy, but it is relatively hard, at least harder than ordinary steel.

  Next, Liu Yong tested its corrosion resistance, whether it was put into sulfuric acid or hydrochloric acid, there was no reaction at all.

  Liu Yong didn't believe in evil, so he made a glass of aqua regia himself, then collected the metal shavings from cutting this piece of metal just now, and poured it into the glass of aqua regia.

  Aqua regia is amazingly corrosive, even gold can be corroded, but after these metal shavings are poured into the aqua regia, the corrosion is very slow.

   Liu Yong also kept stirring with a glass rod, trying to speed up the reaction speed, but the reaction speed was still very slow.

  Since it is so slow, put it there and let them react slowly. Liu Yong memorized the time and took a look. After a few hours, the metal shavings can completely react.

   Next, Liu Yong conducted a series of experiments, and the results were astonishing.

  If the melting point of this metal seems to be very high, if it is heated with a flame for half a day, it will not even be red, and the color will not change for a while, but it will still be black and gray.

   Liu Yong once thought that there was something wrong with his flame, so he quickly found a piece of iron wire. Under the jet of flame, the wire turned red and then turned white.

   This shows that the temperature of the flame is very high. Although it has not reached the melting point of iron wire, it is estimated to exceed 1200 degrees, which is not far from the melting point of iron wire at more than 1500 degrees.

  After a series of verifications, Liu Yong has a preliminary understanding of this metal.

  Low density, high melting point, high hardness, strong corrosion resistance, etc.

  Liu Yong sighed in his heart, it is worthy of being a product of alien civilization, which greatly surpassed the earth civilization.

  Specific properties, such as hardness, tensile strength, ductility, melting point, etc., cannot be verified for the time being, which requires professional equipment and professional institutions.

  Should I send it to a professional institution for testing? Soon, Liu Yong made a decision.

   The cut piece of metal, weighing only about 20 grams, was carefully wrapped with several layers of plastic film, and then ordered Qiu Yang to send it out.

   Mailed it to the most authoritative professional institution in Yanguo, the Institute of Special Metal Materials under the Yanguo Academy of Sciences.

  The recipient is Hu Jianguo, the director of the institute. He is an authoritative expert in special metal materials and an academician of the Yanguo Academy of Sciences.

  Institute of Special Metal Materials.

  Hu Jianguo is meeting a guest in his office, that is Liang Chengwen, an authoritative expert on aeroengines in Yanguo.

  The two of them are alumni. They graduated from the same university in the same class. They just have different majors. One majored in materials, and the other majored in aero-engine design.

  Aero-engine design and development involves a lot of cutting-edge science, the most important of which is material science.

  One generation of materials, one generation of aero engines.

  Yan country can only be considered first-class in the field of aero-engines, staying at the level of the third-generation aero-engines, while some developed countries are very mature in the fourth-generation aero-engine technology, and have successfully developed the fifth-generation aero-engine.

  Yan country's technology gap in the field of aero engines is at least 20 to 30 years behind those developed countries.

  Hu Jianguo asked with concern: "Old man, how is your turbofan X now?"

   Turbofan X is the fourth-generation engine, with a design thrust-to-weight ratio of 10:5 and a vector nozzle technology. It will be used in the new domestic fifth-generation fighter.

  The country placed great hopes on this engine and also gave a lot of support.

   It’s just that during the development process of this engine, various problems occurred due to bumps and bumps, and the whole process was very difficult.

  Liang Wencheng sighed softly, with a bitter expression on his face, "There are still some problems, the most important of which is that the temperature in front of the turbine cannot be increased, and the life of the blades is not good."

  The temperature before the turbine of an aero engine is an important indicator. The temperature before the turbine of an advanced engine can reach more than 1800 degrees Celsius.

  With such a high temperature, many metals are melted, not to mention working in such a temperature environment, and output a strong thrust.

  This requires special metals, superalloys.

The superalloys required by some advanced engines are not ordinary. What is needed is a powder metallurgy superalloy that can withstand higher temperatures, and a series of cooling designs are required to ensure that the turbine disk and turbine blades can be normal at such a high temperature for a long time. to carry out work.

  Liang Wencheng dreamed of further increasing the temperature before the turbine of the turbofan X engine and increasing the service life of the blades, but unfortunately, the materials were not good enough.

   "Jianguo, I came here this time to ask for your help. We need a material comparable to imported high-temperature alloys. Otherwise, our turbofan X project will stagnate."

  Hearing this, Hu Jianguo became serious, and said slowly: "This may not be able to quench thirst. Although we have established a project for the localization of single crystal superalloys, it will take at least five to eight years to apply it to industrialization."

  It will take so long, five to eight years? ? ?

  Liang Wencheng could only sigh, it was too long, and they simply couldn't afford to wait.

  As for importing single crystal superalloys from abroad, not only is it extremely difficult, but the price is extremely high, and people can get stuck on your neck at any time.

  If the confession is cut off one day, it will be troublesome.

How to do it?

  Liang Wencheng's heart sank.

   "Boom, boom, boom!"

  There was a knock on the door of the office, and it was Hu Jianguo's assistant who pushed the door in, holding a courier package in his hand.

  The third update is here!

  (end of this chapter)