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CaCO3在Cu基Ni-P-PTFE化学复合镀表面结垢行为及分形评价的研究
Investigation of CaCO 3 scaling movement on surface of electrolessNi P PTFE composite coatings based on Cu and fractal evaluation
【摘要】 对化学镀Ni-P-PTFE换热面进行了模拟循环冷却水中CaCO3的结垢实验研究.结果表明,当换热面上有解吸空气泡时,该表面结垢较Cu面加剧;无解吸空气泡时,结垢减轻.并运用分形理论对结垢行为进行了评价,发现化学镀表面垢形之分维值较Cu面的增大了.
【Abstract】 The CaCO 3 scaling in simulating cooling water system was investigated on the heat transfer surface of electroless Ni P PTFE based on Cu. The results indicate that the scaling process is enhanced when the air bubbles are desorbed on the Ni P PTFE surface and reduced when no air bubbles exist on the Ni P PTFE surface. The fractal theory is used to analyze the scaling geometric texture. The results show that the fractal dimension value D of CaCO 3 fouling on the Ni |P PTFE surface is greater than that on Cu surface.
【基金】 国家自然科学基金
- 【文献出处】 大连理工大学学报 ,JOURNAL OF DALIAN UNIVERSITY OF TECHNOLOGY , 编辑部邮箱 ,1999年04期
- 【分类号】TG174.4
- 【被引频次】16
- 【下载频次】128