Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments

Kuang Shun Ou, I. Kuan Lin, Ping Hsing Wu, Zhi Kai Huang, Kuo-Shen Chen, Xin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this work, thin ALD alumina films were fabricated for evaluating their capabilities as a barrier material for corrosive environments. The fracture toughness and the corrosion-resisting properties after fatigue cycle of these thin ALD alumina films have been characterized. Indentation tests indicate that the ALD alumina/Al structures could enhance both the yield strength of the metal and the effective fracture toughness of the coated ALD alumina films and this result could be useful for designing nanocomposite structures. However, the test results also indicate that the interfacial strength of the ALD/A1 structures was prone to degrade under fatigue loading under corrosive environment. This could potentially be a problem for the long term reliability of related devices operated under a harsh environment. In addition, the strong correlation between indentation behavior and fatigue loading for the structure indicate that nanoindentation response could be possibly used to indicate the damage level of microstructures for future reliability evaluations.

Original languageEnglish
Title of host publicationMicroelectromechanical Systems - Materials and Devices III
Pages111-116
Number of pages6
Volume1222
Publication statusPublished - 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: 2009 Nov 302009 Dec 4

Other

Other2009 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period09-11-3009-12-04

Fingerprint

Caustics
Aluminum Oxide
Alumina
aluminum oxides
Fatigue of materials
Indentation
Fracture toughness
fracture strength
indentation
Nanoindentation
Yield stress
yield strength
Nanocomposites
nanoindentation
Metals
Corrosion
corrosion
nanocomposites
Microstructure
damage

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ou, K. S., Lin, I. K., Wu, P. H., Huang, Z. K., Chen, K-S., & Zhang, X. (2010). Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments. In Microelectromechanical Systems - Materials and Devices III (Vol. 1222, pp. 111-116)
Ou, Kuang Shun ; Lin, I. Kuan ; Wu, Ping Hsing ; Huang, Zhi Kai ; Chen, Kuo-Shen ; Zhang, Xin. / Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments. Microelectromechanical Systems - Materials and Devices III. Vol. 1222 2010. pp. 111-116
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Ou, KS, Lin, IK, Wu, PH, Huang, ZK, Chen, K-S & Zhang, X 2010, Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments. in Microelectromechanical Systems - Materials and Devices III. vol. 1222, pp. 111-116, 2009 MRS Fall Meeting, Boston, MA, United States, 09-11-30.

Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments. / Ou, Kuang Shun; Lin, I. Kuan; Wu, Ping Hsing; Huang, Zhi Kai; Chen, Kuo-Shen; Zhang, Xin.

Microelectromechanical Systems - Materials and Devices III. Vol. 1222 2010. p. 111-116.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - In this work, thin ALD alumina films were fabricated for evaluating their capabilities as a barrier material for corrosive environments. The fracture toughness and the corrosion-resisting properties after fatigue cycle of these thin ALD alumina films have been characterized. Indentation tests indicate that the ALD alumina/Al structures could enhance both the yield strength of the metal and the effective fracture toughness of the coated ALD alumina films and this result could be useful for designing nanocomposite structures. However, the test results also indicate that the interfacial strength of the ALD/A1 structures was prone to degrade under fatigue loading under corrosive environment. This could potentially be a problem for the long term reliability of related devices operated under a harsh environment. In addition, the strong correlation between indentation behavior and fatigue loading for the structure indicate that nanoindentation response could be possibly used to indicate the damage level of microstructures for future reliability evaluations.

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Ou KS, Lin IK, Wu PH, Huang ZK, Chen K-S, Zhang X. Mechanical characterization of atomic layer deposited (ALD) alumina for applications in corrosive environments. In Microelectromechanical Systems - Materials and Devices III. Vol. 1222. 2010. p. 111-116