What is the density of graphite and copper, and what is the difference between the comparison

The density of the stone mill is not large, which is determined by the network structure of the stone mill (the density of molecules in space is not large), so its density is not large, but because of its network structure (the molecules in the plane are closely arranged), its melting point is very high, even higher than that of diamond.

It is about 2, and it should be brought is not too big.

The specific gravity of graphite is 1 5 of copper.

First of all, the bulk density or true density, I see that most of the upstairs is the true density, generally speaking, the bulk density of graphite is available.

There are many types of graphite, and the basic value we use to make molds is about the same!

Graphite. Graphite is a carbonaceous crystalline mineral, and its crystalline lattice is a hexagonal layered structure. The distance between each mesh layer is human, and the spacing of carbon atoms in the same mesh layer is 1 42a.

It belongs to the hexagonal crystal system with complete layered cleavage. The cleavage plane is dominated by molecular bonds, and the attraction to molecules is weak, so its natural floatability is very good.

Graphite soft, blackish-gray; It has a greasy feeling and can contaminate the paper. The hardness is 1 2, and its hardness can increase to 3 5 with the increase of impurities in the vertical direction. The specific gravity is 1 9 2 3.

Under the condition of oxygen isolation, its melting point is above 3000, and it is one of the most temperature-resistant minerals.

There is no pure graphite in nature, which often contains impurities such as Si02, A1203, Fe0, CaO, P2O5, Cu0, etc. These impurities often occur in the form of minerals such as quartz, pyrite, carbonate, etc. In addition, there are gaseous parts such as water, asphalt, CO2, H2, CH4, N2, etc.

Therefore, in the analysis of graphite, in addition to the fixed carbon content, the volatile matter and ash content must also be determined.

The process characteristics of graphite are mainly determined by its crystalline form. Graphite minerals with different crystalline forms have different industrial values and uses. Industrially, natural graphite is divided into three categories according to different crystalline forms.

I don't know if it's the density of graphite ore or the density of finished graphite after refining? Generally speaking, the density of ore varies greatly depending on the type of ore.

Reveal the difference between graphite electrode and copper electrode, and grasp the advantages and disadvantages of these 6 points.

Copper electrodes have the potential for copper to be involved in cell reactions, while graphite electrodes are not.

Copper electrode: When used as an electrolytic cell, when connected to the anode, it will lose electrons and become +2 valence, and when it is connected to the cathode, it will not change...

As a galvanic cell, it is necessary to look at the reaction with the electrolyte and the other electrode. For example, when copper and iron are used as electrodes, when concentrated nitric acid is the electrolyte, copper is the negative electrode and iron is the positive electrode (passivation). When dilute sulfuric acid is the electrolyte, copper is the positive electrode and iron is the negative electrode.

Graphite: Neither the galvanic cell nor the cell will participate in the reaction.

Copper electrode scrap can be reused, but graphite cannot.

It must be copper, copper, zinc, aluminum, pure graphite, so it is cu>zn>al>c (graphite).

Copper has the highest density of gram cubic centimeters.

The density of diamond is 3 470-3 560 kg m3, the density of graphite.

The density of diamond can become diamond.

Graphite and copper, iron, zinc are all electrically conductive. Depending on the grade of material, the electrical and thermal conductivity are different. It is necessary to determine the material of the graphite required, or its grade, in order to have the corresponding technical parameters.

Xinruida graphite thermal field|Graphite heater|Graphite crucible|Isostatic graphite will also consider these issues when processing, depending on the application field.

So much of the above, in the end, we still have to consider the profit of heat pipes, otherwise the manufacturer will go out of business at a loss. Under the same conditions, graphite is a little better, and the thermal conductivity is only a few times different, but the cost is different. Graphite, which has high cost and limited scope of use, is difficult to have the competitiveness of commodities, and there is no buying and selling, where can there be profits.

Graphite can be used in the laboratory or in special cases, just as some devices will use silver wire instead of copper wire to conduct electricity, this special case is not representative.

The main reason is that the molding is difficult, and the applicability is not as fast as copper, but it is not nothing, such as adding graphite to the heat pipe, but there is a very important point that your heat conductivity coefficient is large, but your heat dissipation can not reach or can not be used, and in the same case (the same heat dissipation and the same wind force) only increased by 1-3 degrees, it is really not necessary, it is better to increase the heat dissipation surface and wind power to come quickly, what do you think?

It's as if their two temperature drop capabilities are not as good as liquid nitrogen, straight liquid nitrogen is not better, widely used or depends on applicability and cost acceptance, sell you a computer 6,000 oceans, radiators account for 3,000 you will not accept, overclocking or liquid nitrogen is easy to use, but no one uses it every day, some bull gods make the host into a fish tank to soak the host in oil, stronger than graphite, in addition, graphite's conductivity is too strong, it will be very unfriendly to hardware.

I'll tell you another good way, you can make the host into an outdoor unit in winter, and make it in the house after the overclocking software...Ha ha. Don't want to be beautiful.

The thermal conductivity of copper is up to 400wmk, ordinary graphite products are only more than 100 points, graphite with higher thermal conductivity than copper is not ordinary graphite products, it belongs to high thermal conductivity graphite, which is not expensive, and graphite can only withstand about 450 in the air, and oxidation will occur if it is high, and there may be other problems such as strength.

Because copper is cheaper than graphite, copper is more cost-effective, and the presence of graphite is relatively small.

Using graphite to conduct heat is a bit too cost-effective.

Because copper is an inert metal that does not react easily with other substances.

Because of the high level of graphite, it is inconvenient to place.

Because the cost of graphite is a bit high, it is not worth it.

Because graphite is more expensive than copper and too stable.

Because the cost will be high, not very good.

Because the ** of copper is not so high.

Graphite is used to conduct heat, and it is too large and too much wood is used.

Because the properties of copper are relatively stable.