以T2铜片作基体进行Ni-P-PTFE化学复合镀实验,获得了相同镀层厚度的Ni-P-PTFE复合镀层试件,测量试件的导热系数.结果表明:在相同厚度下,Ni-P-PTFE复合镀层试件的整体导热系数主要受镀层中碳(C)、磷(P)和聚四氟乙烯(PTFE)成分含量的影响.试件的整体导热系数相比铜的导热系数有所降低,但不超过4.5％,依然保持高导热性能.由正交试验得到优化工艺,由此工艺获得的Ni-P-PTFE化学复合镀层的表面接触角为123.4°,表面能为9.9 mN/m.阻垢测试结果显示,相比铜表面,沉积在Ni-P-PTFE镀层表面的碳酸钙晶体数量与尺寸均有明显的减小.总的来说,Ni-P-PTFE镀层对材料的导热能力影响较小,却能有效地减缓水垢的沉积与聚集,起到阻垢的作用.
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