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鉛酸蓄電池板極固化過(guò)程中板柵表面腐蝕變化過(guò)程 |
鉛酸蓄電池固化過(guò)程中板柵表面腐蝕的變化固化過(guò)程中板柵表面腐蝕的變化。特別在板柵表面與活性物質(zhì)接觸的界面要通過(guò)固化形成一層腐蝕膜,固化過(guò)程要在高溫高濕下長(zhǎng)達(dá)24 一72h 的周期。在這種情況下,金屬的氧化會(huì)加速,腐蝕過(guò)程會(huì)在板柵表面形成氧化鉛層,這一氧化層與固化后的鉛膏骨架直接提供接觸。對(duì)正極而言,在化成時(shí)先是腐蝕層被氧化成為PbOn(n>l)及PbO2然后則是固化鉛膏開始氧化。同樣對(duì)于負(fù)極而言,腐蝕層首先被還原,然后才是固化鉛膏。 The curing process of lead-acid battery grid surface corrosion changes in curing process of grid surface corrosion changes. Especially in the grid surface in contact with the active material interface through curing to form a layer of corrosion film, curing process at high temperature and high humidity for 24 72h cycle. In this case, oxidation of the metal will accelerate the corrosion process, in the grid is formed on the surface of lead oxide layer, the oxide layer and cured paste skeleton provides direct contact. On the positive, in the form of first is corrosion layer is oxidized to PbOn ( n>l ) and PbO2 then is cured paste oxidation. Similarly for negative electrode, corrosion layer is first reduction, and then curing the paste. Plate gate in the oxidation processes of lead or curing process grid corrosion layer formed on the surface is a very important process, but also the active substances can and grid with tightly hold the essence reasons and the main reasons. Grid surface after oxidation of lead oxide is deposited in the grid surface, growing into the paste. The paste and grid surface is created between a very strong connection, ensure thereafter active substance is closely attached to the grid, not shedding of active material. Drape paste plate gate in the curing process can occur in a loss, in the grid / paste on the inside surface of solidified effect process. With 4cmZ plate ( plate grid alloy is Pb-1.6%Sb0.1%As ) double side paste coating. High temperature curing corrosion layer thickness, have very strong corrosion layer / cathode active material of good contact. Thus forming a layer of appropriate properties of corrosion layer is the important objective of plate curing, high temperature curing can contribute to this purpose. |
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