Wear resistance ooxide layers prepared by anodic oxidation of aluminum and aluminum alloys. (in German)

Wear ◽  
1962 ◽  
Vol 5 (2) ◽  
pp. 171
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloys ◽  
Anodic Oxidation

Effects of the Rolling Directions on Wear of the Aluminum Alloys

2021 ◽  
Vol 901 ◽  
pp. 193-198
Author(s):  
Yuh Ping Chang ◽  
Li Ming Chu ◽  
Chien Te Liu ◽  
Jin Chi Wang ◽  
Gao Wei Chen
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloys ◽  
Rolling Direction ◽  
Optical Microscope ◽  
Operating Conditions ◽  
Crystal Phase ◽  
Transportation Industry ◽  
Key Technology ◽  
Crystal Grains

Due to the booming development of the automation industry and the transportation industry, the mechanical components are prone to wear under long-term operating conditions. To improve the wear resistance, effects of the rolling directions on wear of the aluminum alloys are studied. An optical microscope is used to analyze the crystal phase, and the correlation between the crystal grains and the rolling direction is studied. This study can therefore establish a key technology for improving the wear resistance of aluminum alloys.

Evaluation on Microstructure of Aluminum Alloys Dedicated to Plasma Etcher

2011 ◽  
Vol 689 ◽  
pp. 343-349
Author(s):  
Zhi Hui Zhang ◽  
Shu Feng Liu ◽  
Ze Ming Sun ◽  
Xiao Dong Yan
Keyword(s):  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Anodic Oxidation ◽  
Scientific Basis ◽  
Secondary Phases ◽  
6061 Aluminum Alloy ◽  
Close Relationship ◽  
The Matrix ◽  
Hole Defects

The relationship between microstructure and anodic oxidation film on 6061 aluminum alloy dedicated to plasma etcher were mainly studied by OM, SEM and TEM. The results show that the quality of anodic oxidation film has close relationship with the microstructure of materials, the distribution of element and the morphology of secondary phases. The microstructure of foreign 6061 aluminum alloy is uniform, and there are not obviously segregation and cavity. Two kinds of secondary phases disperse over the grain, one is rich-Fe phase, and the other is Mg2Si. Certainly there are also few secondary phases distributing along the grain boundary. The sizes of all secondary phases are almost below 5mm. The size of rich-Fe phases in homemade aluminum alloys are about from 2mm to 15mm, these big-size phases will bring pin-hole defects, which form some channels sending F+ etc. into the matrix of aluminum alloy, then not only the equipment will be destroyed at last, but also products will be polluted. The evaluation on microstructure of aluminum alloy will provide scientific basis for nationalization of plasma etcher.

scholarly journals Wear Resistance of Aluminum Alloys Combined with Steels

1969 ◽  
Vol 20 (12) ◽  
pp. 602-608
Author(s):  
Takashi MIYASIGE ◽  
Atsushi TAWADA ◽  
Ryoichi SUZUKI
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloys

Deep Cryogenic Treatment and CrN Coating Effects on Micro-Scale Abrasion of Aluminum Alloy AA 6101-T4

2014 ◽  
Vol 936 ◽  
pp. 1047-1055 ◽  
Author(s):  
Edgar S. Ashiuchi ◽  
Volker F. Steier ◽  
Cosme R.M. Silva ◽  
Tales D. Barbosa ◽  
Tiago F.O. Melo ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Wear Rate ◽  
Cryogenic Treatment ◽  
Deep Cryogenic Treatment ◽  
Low Wear ◽  
The Impact ◽  
Improve Wear Resistance ◽  
Wear Tests

The endurance of components made of aluminum and aluminum alloys is often limited by their low yield strength and by their low wear resistance. The aim of this paper is to investigate the effect of different methods that can improve wear resistance of aluminum alloys. As a first approach, a highly wear resistant chromium nitrite layer was deposited by plasma vapor deposition on the surface of the aluminum alloy AA 6101-T4. In the second method, an ultra-deep cryogenic treatment was selected. Both methods have been previously used to improve the wear resistance of other harder substrate materials, like tool steel. To investigate the impact of the two methods on the wear resistance of such alloy, micro abrasive wear tests were carried out and an analysis based on the Archard’s law was considered. The results showed a decrease of the wear rate by 29% and 26% for the coated and for the cryogenically treated specimens, respectively, when compared to the as received material. The work also investigated the performance of three different methods (Allsopp, Double Intercept and Polynomial AT) usually considered to calculate the wear rate of coated samples. The three methods presented similar measures of wear rate for the substrate and for the coating

METHODS FOR PREPARING THE SURFACE OF ALUMINUM ALLOYS FOR ELECTROPLATING (review)

2021 ◽  
pp. 82-99
Author(s):  
D.V. Kravchenko ◽  
◽  
I.A. Kozlov ◽  
A.A. Nikiforov ◽  
◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Anodic Oxidation ◽  
Direct Application ◽  
High Porosity ◽  
Nickel Plating ◽  
Zinc Treatment ◽  
Chemical Methods ◽  
Scientific Publications ◽  
Combined Methods

A review of modern scientific publications in the field of methods for preparing the surface of aluminum alloys for electroplating is presented. It is shown that the most widely used methods of preparation are: zinc treatment, high-porosity anodic oxidation and immersion nickel plating. A number of combined methods for preparing the surface of aluminum alloys for electroplating are given. Methods of direct application of electroplating coatings on aluminum and its alloys without the use of a sublayer, both by electrolytic and chemical methods, are considered.

Improving the wear resistance of cast aluminum alloys by the melt thermal-rate treatment

2020 ◽  
Vol 1679 ◽  
pp. 052011
Author(s):  
V B Deev ◽  
E S Prusov ◽  
E H Ri ◽  
S V Smetanyuk ◽  
A V Feoktistov
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloys ◽  
Cast Aluminum ◽  
Cast Aluminum Alloys

Surface Modification of Aluminum Alloys Prepared by Plasma-Based-Ion-Implantation Technique

2006 ◽  
Vol 118 ◽  
pp. 269-274 ◽  
Author(s):  
Li Liu ◽  
Atsushi Yamamoto ◽  
Takanori Hishida ◽  
Hiroaki Shoyama ◽  
Tamio Hara ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Electron Beam ◽  
Aluminum Alloys ◽  
Nitrided Layer ◽  
Implantation Technique ◽  
Layer Surface ◽  
Nitriding Temperature ◽  
Cross Sectional ◽  
Improve Wear Resistance

The aluminum alloys AA5052, AA5083 and Al-7%Si (AC4C) were nitrided by electron beam excited plasma (EBEP) technique to improve wear resistance and hardness. The specimens were characterized with respect to the following properties: wear resistance, hardness of nitrided layer (AlN layer), surface and cross sectional microstructures. The friction coefficient of nitrided AA5052 decreased to 0.2 and that of Al-7%Si was improved to 0.1. The AlN layers were relatively uniformly formed on the AA5052 and AC4C alloys with a thickness of 4.5 μm and 2.5 μm during 2hrs and 5.4 ks, respectively. On the surface of nitrided AA5083, a uniform AlN layer was not formed due to the high nitriding temperature. The Si3N4 was found in the nitrided AC4C alloy.

Improving Tool Wear Resistance in Steel Cutting by Textured Surface and its Mechanism

2012 ◽  
Vol 565 ◽  
pp. 424-429 ◽  
Author(s):  
Tatsuya Sugihara ◽  
Toshiyuki Enomoto ◽  
Satoshi Yukinaga
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloys ◽  
Surface Engineering ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Textured Surface ◽  
Textured Surfaces ◽  
Adhesive Properties ◽  
Chip Adhesion ◽  
Cutting Processes

In the cutting processes, improvements of anti-adhesive properties and wear resistance of cutting tools are strongly required for increasing a cutting tool life. In order to meet these requirements, we adopted surface engineering approach, namely, a functionalization of tool surfaces by textures. In our previous researches, we have developed two types of cutting tool with textured surface, namely, cutting tool with nano/micro textured surface and cutting tool with micro stripe textured surface, in the hopes of improving anti-adhesive properties in cutting of aluminum alloys. As a result, we have clarified that the developed tools significantly decrease chip adhesion on the tool surface by a series of face milling experiments for aluminum alloys. In this paper, the previously developed tools with textured surfaces were applied to the cutting of steel material (S53C) and the wear resistances of the textured surfaces were evaluated. As a result, it was found that the micro stripe texture improves the wear resistance significantly. Moreover, the mechanism of improving wear resistance by the textured surface was also discussed.

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