Amorphous Alumina Film Robust under Cyclic Deformation: a Highly Impermeable and a Highly Flexible Encapsulation Material

2021 ◽  
Vol 13 (39) ◽  
pp. 46894-46901
Author(s):  
Jeong-Hyun Woo ◽  
Donghwan Koo ◽  
Na-Hyang Kim ◽  
Hangeul Kim ◽  
Myoung Hoon Song ◽  
...  
Keyword(s):  
Cyclic Deformation ◽  
Alumina Film ◽  
Amorphous Alumina

Preparation and dielectric properties of dense and amorphous alumina film by sol–gel technology

2013 ◽  
Vol 39 (7) ◽  
pp. 7613-7618 ◽  
Author(s):  
Baofu Hu ◽  
Manwen Yao ◽  
Pengfei Yang ◽  
Wei Shan ◽  
Xi Yao
Keyword(s):  
Dielectric Properties ◽  
Sol Gel ◽  
Alumina Film ◽  
Amorphous Alumina

scholarly journals Amorphous Alumina Films Efficiently Protect Ti6242S against Oxidation and Allow Operation above 600 °C

2018 ◽  
Vol 941 ◽  
pp. 1846-1852 ◽  
Author(s):  
Diane Samelor ◽  
Loïc Baggetto ◽  
Raphaël Laloo ◽  
Viviane Turq ◽  
Thomas Duguet ◽  
...  
Keyword(s):  
Metalorganic Chemical Vapor Deposition ◽  
Unit Area ◽  
Protective Layer ◽  
Chemical Vapor ◽  
Mass Gain ◽  
Interfacial Zone ◽  
Alumina Film ◽  
Alumina Films ◽  
Amorphous Alumina ◽  
Oxygen Ingress

The protection of the titanium based Ti6242S alloy against oxidation at moderate temperature is investigated, through the application on its surface of a 300 nm thick, amorphous alumina film. The latter is processed by metalorganic chemical vapor deposition at 500 °C from dimethyl aluminum isopropoxide. Upon oxidation at 600 °C for 5000 h, an interfacial zone is created between the alloy and the external protective layer, composed of unaffected alumina. In these conditions, the mass gain per unit area is eight times lower than that of the bare alloy, while the hardness of the alloy remains unaffected, revealing negligible oxygen ingress attributed to the efficiency of the protective coating. Finally, alumina coated samples show negligible mass change after 80 one-hour thermal cycles between 50 °C and 600 °C, showing excellent coating adherence on the Ti alloy.

The Elastic, Plastic, and Time Dependent Properties of thin Films as Determined by Ultra low Load Indentation

1991 ◽  
Vol 239 ◽  
Author(s):  
B. N. Lucas ◽  
W. C. Oliver
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Sapphire Substrate ◽  
Time Dependent ◽  
Indentation Hardness ◽  
Alumina Film ◽  
Elastic Plastic ◽  
Spatially Resolved ◽  
Low Load ◽  
Amorphous Alumina

ABSTRACTUsing a highly spatially resolved mechanical properties microprobe, the elastic, plastic and time dependent mechanical properties of sapphire and a 1.9 μm amorphous alumina film on a sapphire substrate have been studied. Young's modulus, hardness, and stress-exponent data are reported. The technique for characterizing time dependent properties via indentation (hardness versus displacement rate/displacement) are directly compared to standard uniaxial compressive techniques (stress vs strain rate) for a bulk Pb-In alloy to further quantify the relationships between the two techniques.

Investigation of the fracture of very thin amorphous alumina film during spherical nanoindentation

2017 ◽  
Vol 638 ◽  
pp. 34-47 ◽  
Author(s):  
David Mercier ◽  
Vincent Mandrillon ◽  
Guillaume Parry ◽  
Marc Verdier ◽  
Rafael Estevez ◽  
...  
Keyword(s):  
Alumina Film ◽  
Amorphous Alumina

INFLUENCE OF REMAINING IMPURITY CONCENTRATION ON THE INTERNAL FRICTION AFTER CYCLIC DEFORMATION IN PURE ALUMINIUM

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-229-C5-234
Author(s):  
F. Baudraz ◽  
B. Tirbonod ◽  
R. Gotthardt
Keyword(s):  
Internal Friction ◽  
Cyclic Deformation ◽  
Impurity Concentration ◽  
Pure Aluminium

A MAS NMR STUDY OF THE STRUCTURE OF AMORPHOUS ALUMINA FILMS

1985 ◽  
Vol 46 (C8) ◽  
pp. C8-113-C8-117 ◽  
Author(s):  
R. Dupree ◽  
I. Farnan ◽  
A. J. Forty ◽  
S. El-Mashri ◽  
L. Bottyan
Keyword(s):  
Mas Nmr ◽  
Alumina Films ◽  
Nmr Study ◽  
Amorphous Alumina

Quantitative Assessment of the Accuracy of Constitutive Laws for Plasticity with an Emphasis on Cyclic Deformation

1993 ◽  
Author(s):  
I. Babuska ◽  
K. Jerina ◽  
Y. Li ◽  
P. Smith
Keyword(s):  
Cyclic Deformation ◽  
Quantitative Assessment ◽  
Constitutive Laws

Thin nanoporous anodic alumina film on aluminium for passive radiative cooling

Pramana ◽  
2021 ◽  
Vol 95 (1) ◽  
Author(s):  
Jitendra K Pradhan ◽  
Dheeraj Pratap ◽  
S Anantha Ramakrishna
Keyword(s):  
Anodic Alumina ◽  
Radiative Cooling ◽  
Alumina Film ◽  
Nanoporous Anodic Alumina ◽  
Anodic Alumina Film
Sign in / Sign up

Export Citation Format

Share Document