THE EFFECT OF BIOLOGICAL-FLUIDS ON THE ADHESION OF DIAMOND-LIKE CARBON-FILMS TO METALLIC SUBSTRATES
THE EFFECT OF BIOLOGICAL-FLUIDS ON THE ADHESION OF DIAMOND-LIKE CARBON-FILMS TO METALLIC SUBSTRATES
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DOI：
10.1016/0925-9635(94)05255-7
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发表时间：
1995-05-01
影响因子：
4.1
通讯作者：
CLYNE, TW
中科院分区：
文献类型：
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作者：
CHANDRA, L;ALLEN, M;CLYNE, TW
类金刚石(DLC)薄膜由标准R.F.将辉光放电CVD暴露于不同的液体(蒸馏水、磷酸盐缓冲盐水(PBS)溶液和PBS中40%的血清)中，研究这种暴露对金属表面DLC涂层稳定性的影响。采用基材塑性应变技术研究了涂层在不同流体中暴露前后的强度和附着力。蒸馏水对膜层无明显影响，而PBS则造成膜层局部脱粘和开裂。血清-PBS溶液的作用居中。X射线光电子能谱(XPS)测量表明，PbS倾向于穿透表面穿孔，并侵袭衬底富硅层和DLC涂层之间的Si/C梯度成分的薄过渡层。暴露温度的升高增加了暴露在PBS中的样品中的缺陷数量。研究发现，钛表面的涂层具有更强的抗损伤能力。
Diamond-like carbon (DLC) films deposited by standard r.f. glow discharge CVD were exposed to various fluids (distilled water, phosphate-buffered saline (PBS) solution and 40% serum in PBS) to study the effect of this exposure on the stability of DLC coatings on metallic substrates. A substrate plastic straining technique was used to study the strength and adhesion of the coatings before and after exposure to various fluids. Distilled water had no apparent effect, whereas PBS caused localized debonding and cracking of the film. The serum-PBS solution had an intermediate effect. X-Ray photoelectron spectroscopy (XPS) measurements indicated that PBS tends to penetrate through surface perforations and attack the thin transition layer of graded Si/C composition between the Si-rich layer on the substrate and the DLC coating. An increase in exposure temperature increased the population of defects in samples exposed to PBS. Coatings on Ti were found to be more resistant to damage.