First, the room temperature is 25 degrees Celsius, and then the measuring instrument is used to slowly heat it and gradually measure its expansion.

Their measuring instrument can be accurate to 10nm, which means that the number can only be detected after the expansion reaches 10nm.

For ultra-precision polishing discs, due to long-term friction, the working temperature may be hundreds of degrees Celsius, so its expansion coefficient must be very low.

The results of their previous experiments were not ideal. The thermal expansion coefficient of silicon carbide ceramics was originally between 1.2 and 4.3, and their experimental results were only slightly lower than this range.

This is obviously not enough. It needs to be lower, at least lower than 0.5, to prove that they have succeeded.

Ever since, everyone stared closely at the display on the computer, waiting for its change.

During the continuous heating, the temperature of the tantalum-doped silicon carbide ceramic piece also gradually increased, from 25 degrees Celsius to 125 degrees Celsius.

However, the indication still hasn’t changed!

This shows that the degree of expansion is still less than 10nm!

Seeing this, they immediately clenched their fists and became more and more excited.

Finally, after the temperature reached over 200 degrees Celsius, the indicator finally jumped and it finally expanded by 10nm!

Suddenly, they could no longer contain the excitement in their hearts.

This result is much better than their previous results!

"Li Wei, go and calculate what the coefficient of thermal expansion is!"

Someone immediately shouted that based on the initial thickness and initial temperature of the ceramic piece, they could calculate the final result.

With such a low amount of expansion, the expansion coefficient must be lower than 1!

But how much exactly is it, they also really want to know.

But at this moment, Lin Xiao said directly: "No need to forget it, the expansion coefficient is 0.16."

These doctoral students were stunned, 0.16?

Professor Lin calculated this directly mentally?

And Li Wei was delayed for a few seconds before saying: "It is indeed 0.16!"

Suddenly, they all cast admiring glances at Lin Xiao. Good guy, with this mental arithmetic speed, the most powerful brain can only reach this level, right?

One is nanometers, the other is centimeters, and there is a difference of 10 million.

Of course, Lin Xiao didn't have any feelings about his calculation speed. It was just a basic operation. This result was what he was really happy about.

0.16, basically reaching the value given by the system.

With such a low expansion coefficient, he can now officially announce that China will have its own top-grade polishing disc, breaking the foreign monopoly!

In a few days, he called over the academicians who were studying polishing technology in China and used this new material to explain to them what surprise meant.

Thinking of this, he smiled again, and then looked at the doctoral students in front of him again, only to see them all looking at him.

He couldn't help being stunned, and asked with a smile: "What are you looking at me for? Why don't you celebrate now?"

Hearing what Lin Xiao said, these postdocs also reacted.

Silicon carbide ceramic material with a thermal expansion coefficient of 0.16!

This is obviously the most suitable material for silicon wafer grinding discs, which means that their results have filled a gap for China.

This is obviously a huge achievement for doctoral students like them.

Although all the steps of the research were explained by Lin Xiao, they just followed the methods specified by Lin Xiao. However, since they are participants, they can certainly share a certain amount of honor.

At this time, they looked at Lin Xiao with eyes full of gratitude, and at the same time they were secretly glad that they had not really left in the first place, otherwise they would have lost a lot of money.

Then, each of them cheered.
Chapter completed!