Oxide Film Structure on Aluminum Alloy 6000 Series Cylindrical Ingot Surface

Metallurgist ◽  
2020 ◽  
Vol 64 (1-2) ◽  
pp. 176-184
Author(s):  
D. V. Pronichev ◽  
L. M. Gurevich ◽  
O. V. Slautin ◽  
V. A. Parfenov ◽  
V. O. Kharlamov
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Film Structure ◽  
Ingot Surface ◽  
Cylindrical Ingot

scholarly journals Effect of high-frequency switching electrolysis on film thickness uniformity of anodic oxide film formed on AC8A Aluminum alloy

2010 ◽  
Vol 60 (11) ◽  
pp. 602-607 ◽  
Author(s):  
Tomoharu Yamamoto ◽  
Hiroomi Tanaka ◽  
Masahiro Fujita ◽  
Hidetaka Asoh ◽  
Sachiko Ono
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Film Thickness ◽  
High Frequency ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Thickness Uniformity

Characterization of chemically modified thin films for optimization of metal CMP applications

2013 ◽  
Vol 1560 ◽  
Author(s):  
G. Bahar Basim ◽  
Ayse Karagoz ◽  
Zeynep Ozdemir
Keyword(s):  
Thin Films ◽  
Oxide Film ◽  
Metal Oxide ◽  
Film Structure ◽  
Protective Oxide ◽  
Metal Oxide Thin Films ◽  
Chemically Modified ◽  
Surface Active Agents ◽  
Protective Oxide Film ◽  
The Stability

ABSTRACTMetal CMP applications necessitate the formation of a protective oxide film in the presence of surface active agents, oxidizers, pH regulators and other chemicals to achieve global planarization. Formation and mechanical properties of the chemically modified metal oxide thin films in CMP determine the stresses develop at the interfaces delineating the stability and protective nature of the chemically altered films on the surface of the metal wafer. The balance between the stresses built in the film structure versus the mechanical actions provided during the process can be used to optimize the process variables and furthermore help define new planarization techniques for the next generation microelectronic device manufacturing. In this study, the preliminary studies were concentrated on the very well established tungsten CMP applications and furthermore, titanium CMP applications were presented as a part of surface nano-structuring methodology for biomedical applications by stressing the synergistic effect of protective metal oxide film of titanium in this advanced application.

Study of the Influence of Technological Factors on the Surface Structure of Aluminum 6000 Series Alloys Ingots

2020 ◽  
Vol 299 ◽  
pp. 938-942
Author(s):  
Leonid Moiseevich Gurevich ◽  
Dmitri Pronichev ◽  
Aleksey Serov
Keyword(s):  
Chemical Composition ◽  
Oxide Film ◽  
Surface Structure ◽  
The State ◽  
Ingot Surface ◽  
Surface Layers ◽  
Technological Factors ◽  
Light Color

The structure and chemical composition of the surface layers of aluminum 6000-series alloys after crystallization and homogenization annealing at 580 °C were investigated. It is shown that the state of the surface significantly depends on the presence of impurities in the coolant of the crystallizer, which deteriorate the continuity of the oxide film, which leads to the formation of light color of individual parts of the ingot surface.

The Effect of Casting Speed on Sump Shape and Ingot Surface of HDC Casting 7075 Aluminum Alloy Ingot

2011 ◽  
Vol 189-193 ◽  
pp. 3785-3788 ◽  
Author(s):  
Qing Feng Zhu ◽  
Zhi Hao Zhao ◽  
Xiang Jie Wang ◽  
Jian Zhong Cui
Keyword(s):  
Aluminum Alloy ◽  
Surface Quality ◽  
Casting Speed ◽  
Direct Chill ◽  
Liquid Pool ◽  
Ingot Surface ◽  
Direct Chill Casting ◽  
7075 Aluminum Alloy ◽  
Chill Casting ◽  
Alloy Ingot

7075 aluminum alloy ingot with the diameter of 100 mm has been produced by horizontal direct chill casting in different casting speed. The effect of casting speed on the sump profile and the ingot surface quality was studied by sump profile observation. It was found that increasing the casting speed results in the deepening of the liquid pool, the adding of segregation knots and the reducing of cold shouts in the ingot surface. It is also found that the depth of the liquid pool is directly proportional to the casting speed and the squared radius of the ingot.

Semi-Solid Stirring Brazing of SiCp/A356 Composites and Aluminum Alloy in Air

2011 ◽  
Vol 189-193 ◽  
pp. 3521-3524 ◽  
Author(s):  
Hui Bin Xu ◽  
Quan Xiang Luo ◽  
Chun Tian Li ◽  
Chang Hua Du
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Weld Seam ◽  
Filler Metal ◽  
Joint Region ◽  
Base Materials ◽  
Semi Solid ◽  
Micro Structures ◽  
Two Sides ◽  
Sic Particle

The semi-solid brazing process of SiCp/A356 composites and aluminum alloy was investigated. The two substrates were heated up to the semisolid temperature range of Zn-Al filler metal in the joint region by a resistance heating plate. At this point a stirrer was introduced into the weld seam in order to mix filler metal and the two sides of substrates into a single uniform joint. After stirring, specimens were sectioned for analysis of macro- and micro-structures along the weld region. The research shows that SiCp/A356 composites and aluminum can be successfully joining with semi-solid filler metal. It can be found that most of the oxide film on the surface of the base metal was disrupted and removed through the observation by SEM. The metallurgical bonds formed between the filler metal and the base materials. Moreover, the oxide film of surface of aluminum alloy was more thoroughly disrupted and removed than that of surface of composites with existing of Sic particle. The joint microstructure with globular α-Al grain enclosed by rich-Zn phase can be obtained after stirring brazing.

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