Molybdenum carbide related development

Molybdenum carbide related development

Molybdenum is a silver-white refractory metal with a melting point of 2615℃, a density of 10.2 g/cm, and a small expansion coefficient, almost the same as the expansion ...
Spherical quartz powder property

Spherical quartz powder property

As a kind of quartz powder with a special shape and amorphous structure, spherical quartz powder not only has good insulation performance, chemical stability, and other ge...
Aluminum nitride: buffer layer for high-quality epitaxial growth

Aluminum nitride: buffer layer for high-quality epitaxial growth

The third generation of semiconductors: silicon carbide (SiC), gallium nitride (GaN), zinc oxide (ZnO), aluminum nitride (AlN) represented by wide bandgap semiconductor ma...

Titanium hazard

News6Days Ago (11-26)
Nettles can contain up to 80 parts per million of titanium. Titanium is not toxic, even in large doses, and does not have any natural effects on the body. It is estimated ...

Boron powder chemical properties

News6Days Ago (11-26)
Periodic table of chemical elements Group ⅲ major group element, symbol B, atomic number 5. Boron is easily oxidized by air and the formation of boron trioxide film prev...

Nano-diamond materials biocompatibility

News6Days Ago (11-26)
Nano-diamond has excellent biocompatibility, easy entry into cells, and easy surface modification. Therefore, nano-diamond can be used as a biological diagnostic probe, ve...

Progress in preparation of TeO2

News6Days Ago (11-26)
Preparation of raw materials High purity raw material is the primary condition for preparing high-quality crystals. If Te is encapsulated in TeO2 powder, the crystals ofte...

Silicon nanoparticles main classification

News6Days Ago (11-26)
Main uses : Can react with organic matter, as the raw material of organic silicon polymer material Silicon metal is purified to make polysilicon. Metal finish. Instead of ...

Research comprehensive experiment on the preparation of nanometer zinc sulfide by semi-permeable membrane method

News6Days Ago (11-26)
Z n S is one of the third generations of wide bandgap semiconductor materials. The bandgap of ZnS is 3.647 E V at 300 K.[1] And its different crystal structure will lead t...

Analysis on vibration factors of self-aligning ball Bearing during operation

News6Days Ago (11-26)
Bearing is the main vibration source of the vibrating screen is difficult to control because the vibrating screen is a great excitation force to maintain the limit speed a...

The function and inspection of bearings

News7Days Ago (11-25)
What is the function of bearing? The role of bearing should be to support, that is, to interpret the shaft.But this is only part of its role, supporting its essence can be...

Status and research progress of titanium powder prepared by hydrogenation dehydrogenation

News8Days Ago (11-24)
Due to the disadvantages of high oxygen content and irregular grain shape, the application of the powder produced by the traditional hydrogenated ball milling method is gr...

Asymmetric epoxidation of allyl alcohol in the presence of calcium hydride-silica gel

News9Days Ago (11-23)
Since the discovery of Sharpless asymmetric epoxidation, this reaction has been widely used in the synthesis of chiral natural products. Recently, Sharpless and his collea...

What is the difference between deep groove ball bearing and four-point contact ball bearing?

News9Days Ago (11-23)
Deep groove ball bearing is the most representative rolling bearing, widely used. Suitable for high and even very high-speed operation, and very durable, no need for const...

Discovery and use of bismuth telluride

News13Days Ago (11-19)
Discovery of bismuth telluride The bismuth telluride samples were tested using X-rays from the SLAC Stanford Synchrotron Radiation Light Source and Advanced Light Sources ...