Chapter 211: Cube_1

"Click".

Chen Yang moved the mouse, clicked on "freeze", took a photo of the image, and chose to save it.

The image after processing showed clearly on the computer screen. Chen Yang could adjust the exposure, brightness, and contrast to better suit his observations.

It was dazzlingly smooth and white!

Enlarging it 1000 times, the image remained white without a speck of unevenness, let alone any visible grains, grain boundaries, phases, or tissue structures.

Some alloy materials had distinct contrast, such as Al-Si alloys and some titanium alloys. These did not need etching. But now it seemed that the cube, which was made of an unknown material, must undergo etching.

Due to the limited conditions in the underground laboratory, ion bombardment etching and sputtering methods couldn't be chosen. Chen Yang directly used the chemical etching method, first putting the cube into a 4% nitric alcohol solution for four to five seconds, then took images for observation.

However...