Perhaps you've seen Isostatic Graphite or Artificial Graphite. You believe each of
them are unique and amazing. Then let us know much more about graphite.
As a few of us know, graphite is with its
special nature. Photovoltaic Graphite is a good example. In other words,
graphite has unique structure as a result it has its unique feature.
Firstly,graphite is with high temperature
resistance. Generally speaking, graphite is melting point may be as much as 3
thousand, nine hundred degrees. At the same time, its boiling point may be up
to four thousand, two hundred and twenty 5 degrees. Even the ultra high
temperature arc ignition, weight loss of graphite continues to be extremely
small. What is more, its coefficient of thermal expansion can also be very
small. In contrast, the graphite strength increases with the growing
temperature. By the way, when the temperature of graphite is two thousand, the
graphite intensity may be doubled.
Secondly, graphite is using the feature of
conductivity. To become particular, graphite is with one hundred occasions
higher conductivity than that of common nonmetal ore. As a matter of fact, it is
thermal conductivity can be over that of steel, iron, lead as well as other
metal supplies. But around the other hand, its thermal conductivity decreases
using the improve of temperature. Even in high temperature, graphite can be as
insulator. Graphite can conduct electrical energy because every carbon atom in
graphite types three covalent bonds with other carbon atoms. What is more, each
carbon atom still retains one totally free electrons to charge.
Thirdly, grahite is with great lubrication.
To be particular, its lubrication overall performance depends on the size of
graphite flake. In other words, the larger the flake or Graphite Block is, the
smaller the friction coefficient will probably be, and the better the
lubrication overall performance will be.
Fourthly, graphite is with good chemical
stability. Graphite has good chemical stability at space temperature.
Consequently, it's with acid, alkali and corrosion resistance to organic
solvents.
Now, let us talk about one application of
graphite.
Graphite can be utilized as put on
resistant lubricating material. Generally speaking, graphite, within the
mechanical business, is frequently used as lubricant. As all of us know, the
lubricating oil can not be used in the condition of high speed, higher
temperature and high stress. But in contrast, graphite is wear-resistant
material can be used within the temperature of two hundred to two thousand
degrees and without lubricating oil.
As for a lot of devices that transport the
corrosive medium, graphite is widely used for making piston cup, sealing ring
and bearings. That is because when they run, there is no need to add lubricant.
没有评论:
发表评论