Live appraising treasures, I became a national treasure expert?

"Teacher Li, Doppu Jin Chengxiang is normal, but the ultrasound echo frequencies are different. What's the reason?"

"What type of device?"

"A furnace-style jar, forty high, sixteen bottom diameter, twenty-four abdominal diameter, 0.5 thick, fully five centimeters thick."

"Are there any traces of mold fitting and splicing?"

"no!"

"Have you had an X-ray done?"

"After doing it, the thickness of the carcass is basically even."

Li Ding'an thought about it for a while: "Thin tires and big ones cannot be molded in one go. The tires should be molded together, but it is not the common segmented drawing and upper and lower joints, nor is it a flat joint, nor is it a bottom joint, but Socketing... is like connecting water pipes, big pipes within small pipes..."

Li Ding'an made two circles with his fingers and gestured,

"Then the edges are sealed and trimmed, so no traces can be found. However, because it is made in batches, the upper and lower sections are not wet and dry when entering the furnace. Under high temperature, the glass and metal components in different parts will undergo different changes, which will lead to return There is a difference in wave frequency... If we do more detailed testing, such as X-ray characteristics of each part and energy dispersive fluorescence analysis, we should find something..."

"Oh, thank you, Teacher Li..."

"Teacher Li, we found a piece of kiln-tempered porcelain, but we don't know the cause of its formation!"

Li Ding'an was stunned for a moment: What the hell?

He brought the things back from XJ. He has looked at every one of them. Why didn't he find such good things inside?

"What is it?"

"A Japanese plate!"

The team leader waved and the team members quickly brought the specimens.

It is not big, half a foot square, with patterns of red fish playing with lotus painted on the four corners, and the center of the plate is the reflection of the red sun, which is red and bright.

Li Ding'an looked at it for a long time and found no signs of kiln change.

The team leader took the plate again and turned it slightly sideways. Li Dingan narrowed his eyes subconsciously.

There is a lotus in the corner of the plate, and a red carp slightly lower, with its tail below its head and its mouth half open, as if it is about to eat the flowers and leaves.

The angle was wrong just now, but now when I look at it, the fish's mouth is actually glowing, or is it golden?

It felt like there was a pearl in my mouth.

Surprised?

Li Ding'an thought about it for a moment and said "ha", "The paint exploded!"

Research was stunned for a moment: "Huh?"

"It should be that the porcelain sagger that was put into the furnace broke a crack, and the fire got in through the crack. This is a phenomenon caused by the sudden heat of the pigment: the main components of the red pigment in the ancient northern area were realgar and lead, and sometimes also Add a little sulfur, the lead will turn yellow when exposed to open fire, and the sulfur will burn, forming a yellow splash line...

But not much. Afterwards, the glaze crystallized and was covered by the vitreous layer, so it was not obvious. It is indeed a kiln phenomenon, but it is not impossible to copy... You can do some non-metallic element testing to see if there is any arsenic component..."

Realgar will also react when exposed to open fire and will be converted into arsenic. The presence of this means that the sagger is indeed broken...

"So simple?"

The team leader clapped his hands and ran away.

Another group came over: "Teacher Li, our group is responsible for the research on the composition of color filling and decorative lines... During the experiment, we found that the cobalt material of one of the specimens was very strange: iron is higher than manganese, manganese is higher than cobalt, and cobalt is higher than Arsenic is high, arsenic is higher than copper, copper is higher than zinc, zinc is higher than nickel..."

He Anbang was stunned for a moment: "Iron, manganese, cobalt, arsenic, copper, zinc, nickel?"

"Yes, seven kinds!"

This is very strange.

Whether it is Zeng Qing, Hui Qing, Bian Qing, Sumali Qing, Zhejiang or Zhuming materials, and no matter which dynasty or period, green materials can be divided into three categories: low manganese, high manganese, and high iron.

The first two are domestically produced: low manganese material does not contain arsenic and zinc, high manganese material does not contain copper and zinc, and the last one is imported from Central Asia, which is the so-called Huiqing, and does not contain copper and nickel.

Therefore, it is rare to see more than six elements. Is this really the first time I heard that all seven elements are included?

He Anbang looked at Ma Xianming, and Ma Xianming also shook his head: After Li Ding'an became the boss, he was responsible for the project. Of course he knew what problems each group had.

But to be honest, he didn't understand it either.

"A few?"

"Just one thing, an amphora."

"What about hair color?"

“It’s more colorful and better than domestic materials and recycled materials!”

"Have you done the mixing and proportioning?"

"I did it, but no matter how I match it, I can't restore the same order of elements."

"Are there any characteristics in microscopic imaging?"

"Yes, there are subtle rust scar-like lines!"

"red?"

"It's not red, it's dark yellow!"

Dark yellow?

Li Ding'an frowned and thought for a while, then his eyes lit up: "Have you done laser light source fluorescence measurement and mass-charge inductively coupled plasma quality testing?"

"What?"

He knew about spectrometry, which measured radiation rays, but he had never heard of the latter.

The team leader shook his head: "No!"

He Anbang hadn't heard of it either: "Do we have such an instrument?"

"Yes, analyze the composition and content of radioactive elements!" Ma Xianming nodded, "But I have never used it!"

"You mean besides cobalt, there are other radioactive elements?"

"Not sure, you'll know after you try it!"

Li Ding'an thought for a moment: "There is an arsenic cobalt mine in Katanga Province, where steel and gold are abundant. There are more than a dozen associated elements, including these seven. But this cobalt mine was only discovered during World War I. Mongolian porcelain definitely does not use this kind of cobalt..."

“In addition, there is a cobalt mine rich in copper, nickel, and iron in the Lisakovsk Oblast in Central Siberia, Russia. It is very similar to my country’s high-manganese materials, but does not contain arsenic... This was discovered relatively early, and it is not far away. Inner Mongolia is also close, so I suspect that when mixing the green material, the painting master used part of the low manganese material and mixed it with this one..."

"But what does it have to do with radioactive elements?"

"The soil of this mine has a special characteristic. It contains uranium, and the decay of uranium will affect other elements... Team Leader Wei used ordinary green materials when making the ratio. Of course, there is no way to restore the order of the elements..."

"That thing about building an atomic bomb?"

"Before the atomic bomb was built, the main purpose of this thing was to mix paints...blue, green, and yellow!"

Isn’t green material just blue and green?

And the microscopic appearance of this thing happens to have yellow lines?

wrong……

He Anbang was excited: "Is it radioactive?"

"Don't worry, the concentration is very low. It should be less than one thousandth. It is only composed of ores. The penetrating power of the rays is not strong. The radiation intensity is about the same as common uranium-containing colored glass..."

"That's good!"

The members of the visiting group also breathed a sigh of relief and became more curious: the questions were getting more and more profound.

Research on porcelain can actually involve radioactive metals?

The key thing is, can Li Ding'an still answer the question?

Although I don’t know if it’s right or not…

Director Fu smiled: "You know a lot?"

The curator nodded: "Otherwise it wouldn't be his turn to be responsible..."

While talking, Yao Chuan ran back happily: "Teacher Li, we're right!"

"Be more detailed!"

"Haha... Lao Cheng lowered the air pressure to 0.8, and every value in the chromatogram is correct!"

"There are crystals on the glaze!"

"I haven't had time to measure it yet, but after recalculating, it is completely feasible to lower the furnace temperature to 500 degrees."

"As long as it's feasible..."

As soon as he finished speaking, the second group also ran back: "Teacher Li, we have the result: the vitrification degrees of the top and bottom of the tank, as well as the inside and outside of the tank, are different. The upper half has higher strength, while the lower half has lower strength..."

"What about the elastic modulus base?"

"On the contrary, up, down, up!"

"Well, mold-fitting and splicing, socket-joining!"

"Yes...thank you, Teacher Li!"

"It should!" Li Ding'an was very calm.

Because this is a new process and new technology, there are many difficulties and questions. In the month after the project was first established, it was basically like this every day. Li Dingan had no time to spare, whether it was his hands, mouth, or even the system.

Li Ding'an was so busy that his feet never touched the floor, he ate in seconds, and he developed the habit of sprinting 100 meters to the toilet at that time. Later, in order to save time, he simply moved his office next to the research room.

Including experience and knowledge are also accumulated at this time.

The researchers' dependence was also developed at that time: if they find problems that they do not understand in the research, they should always go to Teacher Li. No matter how difficult it is, he can ensure that he analyzes it clearly and clearly from the cause to the process to the result.

So everyone from He Anbang to the researchers were very calm because they had long been accustomed to it.

But the visiting group members were a little uneasy.

At first glance, both questions are not complicated and can be understood by non-experts:

The first one is the physical changes caused by altitude and air pressure. It is easy to verify. From the test to the results, it only takes about 20 minutes.

There are also echoes with varying frequencies. This is simpler. It turns out to be caused by the splicing of porcelain bodies. The verification is even simpler: it only takes more than ten minutes to solve it.

But this is to follow the effect from the cause, which is of course simple.

Because there are many reasons for these two problems, air pressure and splicing are just one of countless reasons, and they are extremely inconspicuous.

It's like buying a lottery ticket. There are only about thirty numbers. It seems simple at first sight, but there are millions of combinations. Can you know which one will come out?

This also shows that there is a reason why such a young person can become the general person in charge of the project...

Just as I was sighing, the third group also came:

"Teacher Li, we found out that there is arsenic in the glaze of the specimen!"

"So fast?"

"The laboratory has test strips and did a toxicity test!"

Li Ding'an was stunned for a moment: this thing is a standard item in the laboratory first aid kit, he forgot about it for a moment.

Since there is arsenic, it means that an open flame has been encountered, so it can be determined that the light in the fish's mouth is the phenomenon of kiln deformation caused by the damage of the sagger.

Li Ding'an nodded: "Just test it out..."

As soon as he finished speaking, team leader Wei also came, but he didn't look very good: "Teacher Li, there is uranium in the cobalt material!"

Li Ding'an's heart skipped a beat: "The concentration is very high?"

"Not high, 0.7 thousandths!"

"Very radioactive?"

"It's not strong either, the penetrating power of the rays is very weak!"

Team Leader Wei sighed, "I was just wondering, why didn't I think of analyzing the types of rays before?"

"It's normal..." Li Ding'an smiled, "It's just porcelain, not nuclear research?"

Because no one would have thought that there is uranium in porcelain?

Li Ding'an raised his hand again and said, "Are there any more?"

A few more questions were asked, mostly in the dark. Li Dingan answered them one by one quickly and accurately. The atmosphere in the laboratory was very lively.

Also a little weird.

The team leaders and researchers of each group were very excited: the problems were not big, but they slowed down the progress. Some problems may be solved in three to five days, just like the color difference.

Some may take a week or two, such as kiln changes, and others may take longer, such as uranium elements.

But as soon as Li Ding'an came, the problem was no longer a problem and could be solved in minutes.

What can you do with the time you save?

Eat, drink, sleep... and save your brain.

The visiting group was very silent: Do you know more than a little bit?

The first problem is color difference, and the second problem is furnace temperature and release surface crystallization temperature. Both problems are caused by different altitudes and involve atmospheric science, geography, chemical pigment engineering, etc.

Then there is the splicing of porcelain bodies, which belongs to the category of ceramics, but also involves metallurgy and heat treatment, as well as some ultrasonic and material science theories.

Then comes the kiln transformation, which is pure chemistry.

Then there is cobalt material, which involves radioactive metals.

And the last two mines... he might as well be a foreign geography major...

The questions are complex and involve a wide range of subjects, but they are not profound and can be understood by college students studying related majors.

But if it were one person who knew so many majors and subjects, it would be incomprehensible: there are specializations in the field, but you are not allowed to master them all.

And even if you understand everything, you may not be able to solve it: for example, Ma Xianming, Deputy Director Zhang, and Team Leader Yao, Team Leader Wei, and Cheng Yongquan are all well-known experts and authorities in the industry. They are profound in knowledge and experience. Not rich.

Together, these people must know more than Li Ding'an. But they cannot choose the most correct option from countless possibilities in a short period of time, so they can only try and make mistakes over and over again.

Therefore, it is not only necessary to understand a lot, but also to have the ability to see the essence through the phenomenon. Just like Li Ding'an, you don't need to read experimental reports or calculated data, but can analyze the most accurate results through just a few key information.

The more expert you are, the more you understand the difficulty: without thousands of experiments and experience summaries, it would be impossible to do this.

It’s even less likely to be so fast: Yao Chuan said it only took him a few minutes to answer a question, and it really only took him a few minutes.

And looking at age...impossible!

This is what surprised the visiting members the most...

As time passed, fewer and fewer people asked questions.

Once the problem is solved, of course there is no need to argue or quarrel, just verify the results.

Therefore, the laboratory is getting quieter and quieter.

Li Ding'an also breathed a sigh of relief. Fortunately, he didn't pull his crotch, so he managed it.

Otherwise, He Anbang could kill him: The visiting group has entered the research room, but you, the person in charge, are sleeping?

Looking back now, Lao He's teeth were almost sticking out, and he gave Li Ding'an a thumbs up.

No need to guess, the visiting group must be very satisfied: Where can we find such a comprehensive and professional project leader?

This shows that the professionalism and research capabilities of the research team...

Just as we were happy, someone suddenly asked: "Besides cobalt oxide, what other rare elements are there in porcelain?"

A layman, right?

Definitely not a researcher, because everyone knows...

He Anbang glanced subconsciously, then straightened his expression: "Why are you so stunned? Answer the question!"

"Oh...what about me?"

"nonsense!"

Li Ding'an took a look: he was a middle-aged man, standing next to the curator, and he was probably of a high rank.

He should be about the same age as his father, he is quite tall, slim and quite handsome.

But I don’t know if it’s an illusion, but it feels a little familiar.

The curator and secretary both looked at him. Li Ding'an had no time to think too much: "In addition to cobalt, traditional porcelain only contains titanium, zirconium, barium and other elements. They are mainly used as coagulants, brightening agents or matting agents. Porcelain is also mainly used for furnishings. For the Lord…”

“What about modern porcelain?”

"There are many, but they are mostly used for industrial porcelain!"

"more specific!"

"Oxides include yttria, zirconia, thorium oxide, beryllium oxide, gadolinium oxide, fluorides include barium fluoride, calcium fluoride, magnesium fluoride, nitrides include aluminum nitride, aluminum magnesium, etc... are mostly used Superconducting, dielectric, electro-optical, pressure-sensitive, laser..."

"Specific industry!"

"Automobiles, ships, precision machinery, medicine, aerospace, and even national defense and military industry..."

"How many types are there for military use?"

"There are also many, including laser media, armor protection, window-view wave transmission, as well as infrared detection, laser guidance,..."

Just when he mentioned "infrared detection" and "laser guidance", Li Ding'an suddenly paused.

He finally knew what the visiting group was here for today.

Light porcelain, mirror light porcelain!

Zhang Hanguang, why do you speak so quickly? (End of chapter)