Mechanical properties and adhesion characteristics of hybrid sol-gel thin films
Mechanical properties and adhesion characteristics of hybrid sol-gel thin films
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DOI：
10.1016/j.surfcoat.2004.06.004
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发表时间：
2005-03-21
影响因子：
5.4
通讯作者：
Swain, MV
中科院分区：
文献类型：
--
作者：
Atanacio, AJ;Latella, BA;Swain, MV
用溶胶-凝胶技术合成的有机-无机杂化涂层沉积在硅和铜上，其硬度和杨氏模量是用球形压头在低力下压痕来测定的，发现其与有机取代基的大小有很大关系。基于快速加载速率和最大加载不同时间，比较了涂层系统的压痕蠕变响应。考察了涂层在铜表面的附着特性，确定了有机取代基对涂层开裂行为和脱落倾向的影响。为此，涂层拉伸试样在万能试验机中单轴拉伸，同时使用光学显微镜检查表面。从观察到的多重裂纹模式和薄膜从底层基材剥离的程度来分析力学响应。结果表明，有机取代基的性质对界面附着力和膜韧性有显著影响。(C) 2004 Elsevier B.V.版权所有
The hardness and Young's modulus of organic-inorganic hybrid coatings, synthesised using sol-gel technology, deposited on silicon and copper were determined using indentations at low forces with a spherical tipped indenter and found to depend strongly on the size of the organic substituent. The indentation creep response of the coating systems was compared based on fast loading rates and for different times at maximum load. The adhesion characteristics of the coatings on copper were examined to ascertain the influence of the organic substituents on the film cracking behaviour and debond tendencies. For this purpose, coated tensile test specimens were strained uniaxially in a universal testing machine while the surface was examined using an optical microscope. The mechanical response was analysed from the multiple cracking patterns observed and the extent of film delamination from the underlying substrate. The results indicate that the interfacial adhesion and film toughness are dramatically affected by the nature of the organic substituent. (C) 2004 Elsevier B.V. All rights reserved.