Scratch resistance of brittle thin films on compliant substrates

被引：65

作者：

Chen, Zhong ^{[1
]}

Wu, Linda Y. L. ^{[2
]}

Chwa, Edmund ^{[1
]}

Tham, Otto ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Singapore Inst Mfg Technol, Singapore 638075, Singapore

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 493卷 / 1-2期

关键词：

scratch resistance; pencil scratch test; hardness; cracking; delamination; elastic modulus; fracture toughness; interfacial fracture toughness;

D O I：

10.1016/j.msea.2007.07.099

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

There has been intensive interest in studying the behavior of hard and brittle thin films on compliant substrates under scratch action. The examples include sol-gel protective coatings on plastic optical lenses, safe windows, and flexible electronic devices and displays. Hard ceramic coatings have been widely used to prolong the life of cutting tools and biomedical implants. In this work, the scratch resistance of sol-gel coatings with different amount of colloidal silica on polycarbonate substrates was tested by the pencil scratch test following the ISO 15184 standard. The scratch failure was found to be tensile trailing cracking in the coating and substrate gouging. The indentation hardness, elasticity modulus and fracture toughness of the coatings were determined and correlated to the observed pencil scratch hardness. Based on the analysis, the main factors to improve the scratch resistance are the elasticity modulus, thickness and fracture toughness of the coatings. General consideration for the improvement of scratch resistance of hard coatings on compliant substrates was also discussed. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：292 / 298

页数：7

共 50 条

[1] The fracture of brittle thin films on compliant substrates in flexible displays
Chen, Z
Cotterell, B
Wang, W
ENGINEERING FRACTURE MECHANICS, 2002, 69 (05) : 597 - 603
[2] Tensile testing of thin films supported on compliant substrates
Chen, Xu
Kirsch, Bradley L.
Senter, Robert
Tolbert, Sarah H.
Gupta, Vijay
MECHANICS OF MATERIALS, 2009, 41 (07) : 839 - 848
[3] Elastic buckling of gradient thin films on compliant substrates
Yin, Jie
Chen, Xi
PHILOSOPHICAL MAGAZINE LETTERS, 2010, 90 (06) : 423 - 433
[4] THE DECOHESION OF THIN-FILMS FROM BRITTLE SUBSTRATES
HU, MS
THOULESS, MD
EVANS, AG
ACTA METALLURGICA, 1988, 36 (05): : 1301 - 1307
[5] The use of the scratch test to measure the fracture strength of brittle thin films
Borrero-Lopez, Oscar
Hoffman, Mark
Bendavid, Avi
Martin, Phil J.
THIN SOLID FILMS, 2010, 518 (17) : 4911 - 4917
[6] A Mechanical Method for Preparing TEM Samples from Brittle Films on Compliant Substrates
Taylor, A. A.
Cordill, M. J.
Moser, G.
Dehm, G.
PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY, 2011, 48 (08): : 408 - 413
[7] Effect of substrate roughness on the contact damage of thin brittle films on brittle substrates
Weidner, Mirko
Borrero-Lopez, Oscar
Hoffman, Mark
Bendavid, Avi
Martin, Phil J.
THIN SOLID FILMS, 2010, 518 (18) : 5242 - 5248
[8] Adhesion measurement of thin films on glass substrates by scratch method
Kinbara, A
Baba, S
Kusano, E
2ND INTERNATIONAL CONFERENCE ON COATINGS ON GLASS, ICCG: HIGH-PERFORMANCE COATINGS FOR TRANSPARENT SYSTEMS IN LARGE-AREA AND/OR HIGH-VOLUME APPLICATIONS, 1999, : 218 - 222
[9] SCRATCH TEST FOR MEASURING ADHERENCE OF THIN FILMS TO OXIDE SUBSTRATES
KARNOWSKY, MM
ESTILL, WB
REVIEW OF SCIENTIFIC INSTRUMENTS, 1964, 35 (10): : 1324 - &
[10] Spinodal decomposition and coarsening of stressed thin films on compliant substrates
Leo, PH
Johnson, WC
ACTA MATERIALIA, 2001, 49 (10) : 1771 - 1787

← 1 2 3 4 5 →