Examination of tribological properties of plasma surface layer using special test equipment

Tribotest ◽  
1997 ◽  
Vol 4 (2) ◽  
pp. 209-218
Author(s):  
B. Škoriˇ ◽  
D. Kakaš
Keyword(s):  
Surface Layer ◽  
Tribological Properties ◽  
Test Equipment ◽  
Special Test ◽  
Plasma Surface

scholarly journals Tribological Properties of AISI 316L Steel Surface Layer Implanted with Rare Earth Element

2015 ◽  
Vol 128 (5) ◽  
pp. 923-926
Author(s):  
B. Sartowska ◽  
M. Barlak ◽  
L. Waliś ◽  
W. Starosta ◽  
J. Senatorski ◽  
...  
Keyword(s):  
Surface Layer ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Tribological Properties ◽  
Steel Surface ◽  
Earth Element ◽  
Aisi 316L ◽  
316L Steel

Development of an Injection Valve for Liquid Molding Applications

2001 ◽  
Author(s):  
Christopher P. Karas ◽  
Vladimir Sheyman ◽  
Mulchand S. Rathod
Keyword(s):  
Mold Cavity ◽  
Test Equipment ◽  
Special Test ◽  
Production Environment ◽  
Specific Procedure ◽  
Air Leak ◽  
Design Project ◽  
Senior Design ◽  
Liquid Molding

Abstract This paper is deals with the development of an innovative pneumatically operated injection valve for liquid molding applications. The work in this paper was carried out in a senior design project of one of the authors. A specialized pneumatically operated valve to eliminate the manual step of tubing removal has been designed, fabricated and tested. To evaluate this valve, special test equipment was designed and fabricated, and a specific procedure for testing was developed. The results obtained from the testing indicated that the valve works properly according to the established specification and requirements, and passed air leak checks at different inlet and outlet configurations. The proposed valve is very unique since it allows the catalyzed resin to flow into the mold cavity when it is opened. It allows cycle flushing of the solvent and air into a waste receptacle when it is closed. From the testing and understanding the functionality of the developed valve, it is determined that pneumatically operated injection valve is a viable component that could be used in a production environment to further enhance productivity.

Influence of Corrosive Environment on Changes of the ZnAl40Cu3 Upper Alloy Layer

2013 ◽  
Vol 336 ◽  
pp. 103-109
Author(s):  
Rafał Michalik
Keyword(s):  
Surface Layer ◽  
Tribological Properties ◽  
Alloy Layer ◽  
Al Alloys ◽  
Corrosive Environment ◽  
Structural Examination ◽  
Unmodified Alloy ◽  
X Ray ◽  
Cu Alloys ◽  
Corrosive Environments

Zn-Al alloys are used mainly because of their tribological properties as a material alternative to bronze, cast iron and aluminum alloys in bearings, and as a structural material. Improved properties of Zn-Al alloys can be obtained by the addition of copper , silicon and using of heat treatment. Tribological properties of alloys of the Zn-Al-Cu alloys, their structure has been well described in the literature. Far less are, however, studies on the effect of corrosive environments on the structure of the surface layer of the alloy. The purpose of this examination was to determine the effect of corrosive environment on the surface layer of the ZnAl22Cu3 alloy. Subject of examination was the unmodified alloy containing 40% Al mass. and 3%. Cu (Zn - remain). The tested alloy was subject of the following operations: soaking at the temperature of 185°C during 10 hours with cooling in water, soaking at the temperature of 380°C during 10 hours with cooling in water and soaking at the temperature of 380°C w during10 hours with subsequent soaking at the temperature of 170°C with cooling in water. Subject of tests structural examination were samples after potentiostatic tests carried out at potential E = 300 mV Ekor in 24 hours in an acid rain, pH = 3.5. In order to determine the microstructure of the examined coatings metallographic examinations were performed using optical and scanning microscope cooperating with EDS X-ray spectrometer. Quantitative analysis of the selected characteristic microareas determined from X-ray spectral analysis EDX.

Vacuum Tribological Properties of Titanium with a Nanocrystalline Surface Layer

2015 ◽  
Vol 57 (1) ◽  
Author(s):  
Dingshun She ◽  
Wen Yue ◽  
Yingjun Du ◽  
Zhiqiang Fu ◽  
Chengbiao Wang ◽  
...  
Keyword(s):  
Surface Layer ◽  
Tribological Properties

Tribological Properties and Microstructure of Gradient Nanocomposite Coatings on the Basis of Ti-Al-Cr-B-N

2015 ◽  
Vol 1085 ◽  
pp. 139-142 ◽  
Author(s):  
Oleg V. Sergeev ◽  
Victor P. Sergeev ◽  
Marina V. Fedorischeva ◽  
Andrey V. Voronov
Keyword(s):  
Surface Layer ◽  
Phase Composition ◽  
Chemical Composition ◽  
Tribological Properties ◽  
Ion Beam ◽  
Nanocomposite Coatings ◽  
Tialn Coating ◽  
X Ray ◽  
Secondary Ions ◽  
Distribution Of Elements

The X-ray and mass spectroscopy of secondary ions, the phase composition, the distribution of elements in the depth of coating on the basis Ti-Al-N treated by the (Cr+B) ion beam was studied. It was established that the ion implantation of B and Cr in TiAlN coating leads to changes in the chemical composition of the surface layer and the redistribution of the elements in the surface layer. This fact leads to change of tribological properties and microhardness.

Formation of Surface Layers in Cu-C System

2014 ◽  
Vol 1013 ◽  
pp. 224-228 ◽  
Author(s):  
Yurii F. Ivanov ◽  
Anton D. Teresov ◽  
Olga Ivanova ◽  
Victor Gromov ◽  
Evgeni Budovskikh ◽  
...  
Keyword(s):  
Surface Layer ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Surface Layers ◽  
Island Structure

The studies of the structure and tribological properties of the surface layer of copper-doped carbon was performed. The formation of an island structure with a low coefficient of friction (relative to the original copper) was detected.

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