Wear resistance of copper EDM tool electrode electroformed from copper sulfate baths and pyrophosphate baths

2010 ◽  
Vol 50 (5-8) ◽  
pp. 635-641 ◽  
Author(s):  
Ping Mei Ming ◽  
Di Zhu ◽  
Yong Bin Zeng ◽  
Yang Yang Hu
Keyword(s):  
Wear Resistance ◽  
Copper Sulfate ◽  
Tool Electrode ◽  
Sulfate Baths

Pathological Study of Effect of Short and Long-term Copper Sulfate Bath on Gill in Grass Carp, Ctenopharyngodon idella

2007 ◽  
Vol 20 (1) ◽  
Author(s):  
R. PEYGHAN ◽  
K. OSKOIIZADEH ◽  
S. ESMAILZADEH ◽  
A. RASEKH
Keyword(s):  
Copper Sulfate ◽  
Grass Carp ◽  
Ctenopharyngodon Idella ◽  
Sulfate Bath ◽  
Secondary Lamellae ◽  
Cellular Debris ◽  
Sulfate Baths ◽  
Grass Carp Ctenopharyngodon Idella ◽  
Short And Long Term

Grass carp were exposed to two therapeutic concentrations of copper sulfate (10 mgxL-1 in 1 hour and 1 mgxL-1 in 24 hours). Twenty-four hours after the copper sulfate baths, the histopathology of the gills was studied. The observed lesions in gills after short and long term baths were: mucus coagulation and accumulation of cellular debris on the epithelium of lamellae and inter lamellar regions, lamellar edema, hemorrhage, hyperplasia, epithelial cell necrosis, congestion and aneurysm (telangiectasis) in the secondary lamellae. In the 24 hour copper sulfate bath, the percentage of gill lesions that were observed correlated directly with the copper sulfate concentration (p0.05). Epithelial necrosis (89% in 10 mgxL-1 for 1 h) was the most prevalent lesion in these groups.

Research on the Performance of Ultrasonic Vibration Assisted Electrical Discharge Surface Modification Layer

2010 ◽  
Vol 171-172 ◽  
pp. 408-411
Author(s):  
Chun Jie Dong ◽  
Jian Hua Zhang ◽  
Xi Chao Song
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Surface Modification ◽  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Vibration Amplitude ◽  
Experimental Results ◽  
Tool Electrode ◽  
Micro Hardness ◽  
Melting Material

Ultrasonic vibration assisted electrical discharge surface modification was studied in the paper. The influence of ultrasonic vibration amplitude and frequency on the modification layer performance, such as surface roughness, sectional morphology, micro hardness and wear resistance was investigated. Experimental results show that ultrasonic vibration assisted electrical discharge surface modification can improve surface roughness and make the melting material well-distributed. The surfaces have higher micro hardness and wear resistance when the tool electrode is assisted with ultrasonic vibration.

scholarly journals Electrochemical codeposition of arsenic from acidic copper sulfate baths: The implications for sustainable copper electrometallurgy

2022 ◽  
Vol 176 ◽  
pp. 107312
Author(s):  
Florian Verbruggen ◽  
Pieter Ostermeyer ◽  
Luiza Bonin ◽  
Antonin Prévoteau ◽  
Kristof Marcoen ◽  
...  
Keyword(s):  
Copper Sulfate ◽  
Sulfate Baths

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Fate and forms of Cu in a reservoir ecosystem following copper sulfate treatment (Saint Germain les Belles, France)

2003 ◽  
Vol 107 ◽  
pp. 1333-1336 ◽  
Author(s):  
E. Van Hullebusch ◽  
P. Chatenet ◽  
V. Deluchat ◽  
P. M. Chazal ◽  
D. Froissard ◽  
...  
Keyword(s):  
Copper Sulfate

Abrasive wear of polymer/steel gear drives

2008 ◽  
Vol 4 (1) ◽  
pp. 1-26
Author(s):  
Gábor Kalácska
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Material Selection ◽  
Solid Particles ◽  
Soil Types ◽  
General View ◽  
Modern Engineering ◽  
Clean Environment ◽  
Engineering Polymers ◽  
Plastic Gears

Research was performed on the friction, wear and efficiency of plastic gears made of modern engineering polymers and their composites both in a clean environment (adhesive sliding surfaces) and in an environment contaminated with solid particles and dust (abrasive), with no lubrication at all. The purpose is to give a general view about the results of abrasive wear tests including seven soil types as abrasive media. At the first stage of the research silicious sand was applied between the meshing gears and the wear of plastic and steel gears was evaluated and analyzed from the point of different material properties (elongation at break, hardness, yield stress, modulus of elasticity) and its combinations. The different correlations between the experienced wear and material features are also introduced. At the second stage of the project the abrasive sand was replaced with different physical soil types. The abrasive wear of gears is plotted in the function of soil types. The results highlight on the considerable role of physical soil types on abrasive wear resistance and the conclusions contain the detailed wear resistance. The results offer a new tribology database for the operation and maintenance of agricultural machines with the opportunity of a better material selection according to the dominant soil type. This can finally result longer lifetime and higher reliability of wearing plastic/steel parts.

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