不同金属材料与海水温度对海水结垢影响的实验研究
发布时间：2019-04-12 16:41
【摘要】：针对海水换热结垢现象进行了实验研究。对比了镀锌铁片、黄铜、紫铜和不锈钢4种金属在海水中的结垢特征,以及4种金属表面结垢量的变化。实验结果显示,不同金属在海水中的污垢形貌及结垢量不同,镀锌铁片的结垢量最大,紫铜表面腐蚀较为严重,结垢量最小。对海水污垢进行了XRD(X-Ray Diffraction)和EDX(Energy Dispersive XRay)物相分析,结果显示,不同金属材料表面形成的海水污垢的物相组成不同,镀锌铁片表面的污垢成分主要是锌的腐蚀产物,而不锈钢表面的污垢成分主要为氢氧化镁。比较了镀锌铁片和黄铜在80℃和60℃海水中的结垢量变化,镀锌铁片污垢随着海水温度的上升而下降,而黄铜污垢随着海水温度的上升而上升。
[Abstract]:The scaling phenomenon of heat exchange in seawater was studied experimentally. The scaling characteristics of galvanized iron sheet, brass, copper and stainless steel in seawater and the change of scaling amount on the surface of four kinds of metals were compared. The experimental results show that the fouling morphology and scaling amount of different metals in seawater are different, the scale amount of galvanized iron sheet is the largest, the surface corrosion of red copper is more serious, and the amount of scaling is the least. The XRD (X-Ray Diffraction) and EDX (Energy Dispersive XRay) phase analysis of seawater fouling was carried out. The results showed that the phase composition of seawater fouling formed on the surface of different metal materials was different, and the fouling composition on the surface of galvanized iron sheet was mainly the corrosion product of zinc. The fouling composition on the surface of stainless steel is mainly magnesium hydroxide. The scaling changes of galvanized iron sheet and brass in seawater at 80 鈩，
本文编号：2457190
[Abstract]:The scaling phenomenon of heat exchange in seawater was studied experimentally. The scaling characteristics of galvanized iron sheet, brass, copper and stainless steel in seawater and the change of scaling amount on the surface of four kinds of metals were compared. The experimental results show that the fouling morphology and scaling amount of different metals in seawater are different, the scale amount of galvanized iron sheet is the largest, the surface corrosion of red copper is more serious, and the amount of scaling is the least. The XRD (X-Ray Diffraction) and EDX (Energy Dispersive XRay) phase analysis of seawater fouling was carried out. The results showed that the phase composition of seawater fouling formed on the surface of different metal materials was different, and the fouling composition on the surface of galvanized iron sheet was mainly the corrosion product of zinc. The fouling composition on the surface of stainless steel is mainly magnesium hydroxide. The scaling changes of galvanized iron sheet and brass in seawater at 80 鈩，
本文编号：2457190
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