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本文从界面物理化学的角度,实验研究和探讨这一金属表面均存在的薄层氧化物对有机膦酸类缓蚀阻垢剂作用过程的影响.模拟制备工业水介质中碳钢表面氧化层中热力学稳定成分羟基氧化铁(FeOOH),研究成垢离子,阻垢剂在其表面的吸附过程及影响因素,采用恒pH值FeOOH接种法探讨在CaCO_3晶体生长过程中有机膦酸阻垢剂的作用,实验表明:有机膦酸阻垢剂在羟基氧化铁表面上的吸附改变了FeOOH的界面状态,阻止了成垢离子在FeOOH上的吸附、进而抑制了碳酸钙晶体在金属表面上的生长,显微摄影法和X-射线衍射法证明了金属表面氧化物在有机膦酸阻垢剂作用过程中的影响.
In this paper, from the interface physical chemistry perspective, the effect of thin oxides on the surface of the surface of carbon steel in the industrial water medium was simulated and studied. Thermodynamically stable iron oxyhydroxide (FeOOH), the study of scale-forming ions, adsorption process of scale inhibitors on the surface and influencing factors, using constant pH FeOOH inoculation method to explore the role of organic phosphonate scale inhibitors in the growth of CaCO_3 crystals Experiments show that the adsorption of organic phosphonate scale inhibitors on the surfaces of iron oxyhydroxide changes the interface state of FeOOH, prevents the adsorption of scale ions on FeOOH, and thus inhibits the growth of calcium carbonate crystals on metal surfaces. Microphotography and X-ray diffraction proved the effect of oxides on the surface of organic phosphonic acid scale inhibitors.