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氢氧化钾的腐蚀特性介绍!

发布来源:http://www.jinhao360.com    更新时间:2019-04-10 点击数:

氢氧化钾的用处十分广,在我们生活消费中经常能够见到、用到,今天我们就来理解一下氢氧化钾停止时的腐蚀特性。

  Potassium hydroxide has a wide range of uses. It is often seen and used in our daily life and consumption. Today we will understand the corrosion characteristics of potassium hydroxide when it stops.
  平均腐蚀是氢氧化钾工业消费设备常见的腐蚀形态之一,是电化学腐蚀的根本形态,在全部暴露于介质中的外表上平均停止,金属平均减薄,重量逐渐减轻。
  Average corrosion is one of the common corrosion forms of potassium hydroxide industrial consumption equipment. It is the fundamental form of electrochemical corrosion. Average corrosion stops on the surface of all exposed media. The average metal thins and the weight gradually decreases.
  石墨化腐蚀是普通铸铁中的石墨以网络外形散布在铁素体内,在介质为盐水、矿水、土壤或极稀的酸性溶液中,发作了铁素体选择性腐蚀。
  Graphitization corrosion is that graphite in ordinary cast iron is dispersed in ferrite body in network shape, and selective corrosion of ferrite occurs in saline water, mineral water, soil or extremely dilute acidic solution.
  磨损腐蚀是由于腐蚀流体和金属外表的相对运动,惹起金属的加速毁坏现象,它是腐蚀和磨损、化学作用和机械作用共同或交替停止的结果,其腐蚀剧烈水平远超越单一的腐蚀过程。消费中流体通常是气、液、固多相并存,在纯碱厂呈现的腐蚀常见为冲刷腐蚀、冲击腐蚀、空泡腐蚀等类型。
  Wear corrosion is caused by the relative movement of corrosive fluid and metal appearance, which causes the accelerated destruction of metal. It is the result of the joint or alternate stopping of corrosion and wear, chemical and mechanical action. Its severe corrosion level is far beyond the single corrosion process. Fluids in consumption usually coexist in gas, liquid and solid phases. Corrosion in soda plant is usually erosion corrosion, impact corrosion, cavitation corrosion and other types.
氢氧化钾
  冲刷腐蚀也称为进口管腐蚀,主要集中呈现在换热管列管入口管端处,惹起的主要缘由是流体由大截面进入小截面的列管中,产生的湍流与夹带的结晶细粒猛烈的对管端停止冲刷,很快就把管端蚀穿氢氧化钾冲击腐蚀产生的缘由是更高流速中产生的一种磨损腐蚀。主要是泵等的转动部件;空泡腐蚀又称穴蚀,是由于蒸汽泡的构成和幻灭而惹起的,是由于金属设备的几何外形不能满足流膂力学的请求,部分产生旋涡,气体在压力高时幻灭,产生冲击波小孔和缝隙腐蚀是在金属外表上产生小孔或缝隙的一种部分的电化学腐蚀形态。
  Erosion corrosion, also known as inlet pipe corrosion, mainly occurs at the inlet end of heat exchanger tubes. The main reason is that the fluid enters the small cross-section tubes from a large cross-section. The turbulence and crystalline fine particles produced by the turbulence stop the erosion at the end of the tubes violently, and the corrosion at the end of the tubes is quickly penetrated by the impact corrosion of potassium hydroxide, which is caused by a kind of wear corrosion at a higher flow rate. Cavitation corrosion, also known as cavitation corrosion, is caused by the composition and disillusionment of vapor bubbles, because the geometrical shape of metal equipment can not meet the requirements of fluid mechanics, part of which produces vortices, gas disillusionment at high pressure, and shock wave small holes and crevice corrosion is an electrochemical corrosion form of part of the metal surface that produces small holes or crevices. State.
  另外氢氧化钾的碱性相比于纯碱、烧碱等要弱很多,能够将它撒在需求防潮的物品上面,既起到了防潮的作用又对物品的质量形成不了影响。但是在一些大型的终年有水的中央不倡议运用它,假如水和它的比例不成正比的话不只不会起到相关的作用,还会影响四周的环境。
  In addition, the alkalinity of potassium hydroxide is much weaker than that of soda, caustic soda, etc. It can be sprayed on the products that need moisture-proof, which not only plays a moisture-proof role, but also has no effect on the quality of the products. However, some large central authorities with water throughout the year do not advocate using it. If the proportion of water and water is not proportional, it will not only play a related role, but also affect the surrounding environment.

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