I have a product in the aluminum above the oxidation of 20 through the hole, that is so, good heat dissipation, I do not know, right, before oxidation, punching OK?
Of course, there is a change, usually after the metal oxidation, thermal conductivity is worse.Aluminum plating process, which belongs to the coating technology it is pre plating and electroplating process steps to increase on the basis of conventional Ti process, aluminum is the process of the aqueous solution of salt and hydrochloric acid in the plating after activation of chemical treatment; electroplating bath composition including nickel sulfate, nickel chloride, boric acid, twelve alkyl sodium sulfate, saccharin, brightener, this process has the advantages of simple, practical and good effect, the titanium aluminum prepared by the hardness of the film is HV 1500, under the same conditions than the 22 carat gold plating wear 150 times, can be processed into various forms of gold color, color, black light series aluminum products.Near room temperature:Thermal conductivity of alumina 10W/m = KAluminum thermal conductivity 237W/m = K
It is better to drill before oxidation, and then oxidize after drilling, so that the appearance will not be scratched
This has nothing to do with the thermal conductivity. The processing of aluminum before oxidation is very good. After oxidation, the alumina is a dense layer of oxide to protect the internal aluminum from corrosion, and the drilling is easy to remove the oxide!
Of course, the heat conductivity of metals is usually worse after oxidation.Near room temperature:Thermal conductivity of alumina 10W/m = KAluminum thermal conductivity 237W/m = KBut you seem to have another problem hereThe purpose of opening the hole is to use Kong Zengda radiation area to enhance heat dissipation?This oxidation before and after oxidation play no difference.
