Thickness-Dependent Mechanical Behaviour of Aluminium-Coated Polyethylene Terephthalate (PET) Films

被引：9

作者：

Gupta, Sandhya ^{[1
]}

Dixit, Manasvi ^{[1
]}

Baboo, Mahesh ^{[1
]}

Sharma, Kananbala ^{[1
]}

Saxena, N. S. ^{[1
]}

机构：

[1] Univ Rajasthan, Dept Phys, Semicond & Polymer Sci Lab, Jaipur 302004, Rajasthan, India

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2009年 / 48卷 / 12期

关键词：

Coating; Mechanical behaviour; Thin films; Yield strength; THIN-FILMS;

D O I：

10.1080/03602550903204212

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Mechanical behaviour of aluminium-coated PET films has been investigated through Dynamic Mechanical Analyser. Aluminium is coated on PET substrate by vacuum thermal evaporation method. As thickness of aluminium coating increases from 150 nm to 350 nm, tensile strength decreases from 108.88 MPa to 99.25 MPa. This mechanical behaviour is correlated with microstructure and its evolution with the thickness of aluminium coating. Al-PET film consists of fine globular grains and average grain size increases monotonically with the film thickness. The relative contribution of the grain size to the strength of aluminium thin films is in good agreement with Hall-Patch equation.

引用

页码：1333 / 1337

页数：5

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