In 1966, General Electric Company developed water electrolytic cell based on proton conduction concept, using polymer membrane as electrolyte. PEM cells were commercialized by General Electric in 1...
How can graphite molds be cleaned?
Generally, when the molding process is completed, dirt or residues (with certain chemical composition and physical properties) are often left on the graphite mold...
1. SiC crystal growth technology route
PVT (sublimation method),
HTCVD (high temperature CVD),
LPE (liquid phase method)
are three common SiC crystal growth methods;
The most recognized meth...
As a kind of power generation device that converts chemical energy in hydrogen and oxidant into electricity, the gas tightness of fuel cell stack is very important. This is the test of VET for the ...
Some organic and inorganic substances are required to participate in semiconductor manufacturing. In addition, since the process is always carried out in a clean room with human participation, semi...
Solid lubricating bearings use metal materials as the foundation, and form well-ordered and appropriately sized holes on the foundation, and then embed oil-containing graphite or molybdenum disulfi...