106 Testing on Migration Resistance of Ultra-high Purity Aluminum Thin Films Under Accelerated Thermal Cycling

Length-scale dependence of the elastic properties of thin film materials bears significance in the design of Microelectronic and Micro-electro-mechanical (MEMS) systems, which are usually desired to operate in the elastic range under different operational loading conditions. In this study, we investigate elastic properties of freestanding ultra-high purity Aluminum and Gold thin films with thickness varying from 30 to 350 nanometers. Uniaxial tension test results indicate that for truly polycrystalline films, Young’s modulus can be as low as 85% and 60% of the bulk value for Aluminum and Gold respectively with average grain size of 20 nanometers. We present, for the first time, the evidence of non-linear elasticity with total strain up to 1.0% in nanocrystalline thin films and attempt to provide fundamental understanding of the length-scale dependence of elasticity in thin films with a simple model based on inter-atomic force-distance relationships.

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Thermal fatigue of high-purity aluminum thin films under thermal cycle testing

Strength Fracture and Complexity ◽

10.3233/sfc-2011-0124 ◽

2011 ◽

Vol 7 (1) ◽

pp. 61-70 ◽

Cited By ~ 4

Author(s):

S. Ri ◽

T. Sugano ◽

M. Saka ◽

M. Yamashita ◽

F. Togoh

Keyword(s):

Thin Films ◽

Thermal Fatigue ◽

High Purity ◽

Thermal Cycle ◽

High Purity Aluminum

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Corrosion of Ultra-High Purity Aluminum in Hydrochloric Acid

Materials Transactions JIM ◽

10.2320/matertrans1989.41.203 ◽

2000 ◽

Vol 41 (1) ◽

pp. 203-209 ◽

Cited By ~ 5

Author(s):

Kikuo Matsusaka ◽

Hiroto Osono ◽

Takao Kino

Keyword(s):

Hydrochloric Acid ◽

High Purity ◽

Ultra High Purity ◽

High Purity Aluminum

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Microelectrochemical Studies of Pit Initiation on High Purity and Ultra High Purity Aluminum

Advanced Engineering Materials ◽

10.1002/adem.200500067 ◽

2005 ◽

Vol 7 (5) ◽

pp. 339-348 ◽

Cited By ~ 32

Author(s):

T. Suter ◽

Y. Müller ◽

P. Schmutz ◽

O. von Trzebiatowski

Keyword(s):

High Purity ◽

Ultra High Purity ◽

High Purity Aluminum ◽

Pit Initiation

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High- and Ultra-High-Purity Aluminum, a Review on Technical Production Methodologies

Metals ◽

10.3390/met11091407 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1407

Author(s):

Danilo C. Curtolo ◽

Neng Xiong ◽

Semiramis Friedrich ◽

Bernd Friedrich

Keyword(s):

High Purity ◽

Zone Melting ◽

Advanced Technology ◽

Aluminum Production ◽

Advantages And Disadvantages ◽

Technology Products ◽

Ultra High Purity ◽

Technical Production ◽

Purification Methods ◽

High Purity Aluminum

Aluminum and aluminum-based alloys have been used for many years. In view of the increase in material purity requirements of advanced technology products, research regarding high-purity aluminum has gained significant attention in recent years. In this review, we seek to describe the fundamental purification principles and the mechanisms of various segregation techniques used to produce high-purity aluminum. Moreover, we aim to provide an overview of high-purity aluminum production, with particular emphasis on: (a) principles on how to produce high-purity aluminum by layer- and suspension-based segregation methods; (b) discussion of various influencing process parameters for each technique, including three-layer electrolysis, vacuum distillation, organic electrolysis, suspension-based segregation, zone melting, Pechiney, Cooled Finger, and directional solidification; as well as (c) investigations of fundamental working principles of various segregation methods and corresponding reported end-purification for the production of HP-Al. Eventually, the end-reported product purity, and advantages and disadvantages of various purification methods and technologies are summarized. By analyzing and comparing the characteristics of different methods, we put forward suggestions for realizing efficient and environmentally friendly production of high-purity aluminum in the future.

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