2016年11月2日星期三

Magnesium alloy coating properties?

Magnesium alloy coating properties?
Magnesium density is small, it also is famous for its light alloy. The density of magnesium alloy in commonly 1.8 g. 3 cm - following magnesium, magnesium lithium alloy density less than 1.6 g · cm - 3. Some super light magnesium. Lithium alloy density less than 1, even is lower than water. Low density of magnesium and magnesium alloy to improve its performance than by. For example, the elastic modulus of 20 o to 45 gpa, than aluminum (70 gpa) and Ti (120 gpa) is low, but the than the elastic modulus of the same (~ 26 gpa). The characteristics of magnesium and magnesium alloy quality small, make its in transportation, aviation and space industry has great application prospect. Vacuum coating machine
Magnesium melting point is 651 ℃, boiling point is 1107 ℃. Magnesium vapor pressure is very high, at 627 ℃ for 215215.95 Pa, 727 ℃ for 1037.1 Pa, so magnesium beryllium easy to volatilize. Magnesium atoms in the outermost electron is very easy to lose two, is a very lively metal. Room temperature magnesium to F, CL, BR, I generate corresponding compound elements such as role. When heated magnesium and sulfur, nitrogen can generate the MgS and Mg3N2. Slowly magnesium oxide in the air, lose silvery white gloss and black. If the temperature to 400 ℃ above, magnesium oxide, the rapid faster more than 500 ℃ after oxidation, burning, at this time will be generated and a small amount of magnesium oxide nitride magnesium. Magnesium combustion would send a very strong light. The characteristics of magnesium, the favour of people.

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