Wear resistance of thermal sprayed coatings on the base of recycled hardmetal

2000 ◽  
Vol 130 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Priit Kulu ◽  
Sergei Zimakov
Keyword(s):  
Wear Resistance ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings

The Research of Thermal Arc Sprayed Coatings Tribological Properties by Using Rubber Wheel Test

2015 ◽  
Vol 220-221 ◽  
pp. 693-697 ◽  
Author(s):  
Justinas Gargasas ◽  
Algirdas Vaclovas Valiulis ◽  
Irmantas Gedzevicius ◽  
Hanna Pokhmurska
Keyword(s):  
Wear Resistance ◽  
Mass Loss ◽  
Tribological Properties ◽  
Steel Substrate ◽  
High Wear Resistance ◽  
Tribological Behaviour ◽  
Oxide Inclusions ◽  
Porosity Of Coatings ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings

This paper present the result obtained from new experimental STEIN-MESYFIL 953 V; STEIN-MESYFIL 954 V coatings. The surfacing material was wires of 1.6 mm diameter. The tests aimed at determining wear resistance of coatings sprayed on steel substrate. The investigation shows that the tribological behaviour of new experimental thermal arc sprayed coatings is greatly affected by its microstructural constituents such as porosity, oxide inclusions, and microhardness of coatings. Results show that increasing porosity of coatings twice, it doubles the mass loss. Results for thermal sprayed coatings of all experiments showed their high wear resistance and are discussed.

Tribomechanical Properties of Self Lubricated Oxide Ceramic Hard Coatings

2002 ◽  
Author(s):  
Maksim Kireitseu ◽  
Sergey Yerakhavets ◽  
M. Istomin
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Ceramic Coating ◽  
Hard Coatings ◽  
Oxide Ceramic ◽  
Load Range ◽  
Optimal Load ◽  
Tribomechanical Properties ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings

A lot of researches indicate a great importance of thermal sprayed coatings for wear resistance. However some valuable properties such as self-lubrication ability of thermal sprayed coatings become hesitated some times. This paper revealed tribomechanic properties of hard oxide aluminum ceramic coating and bronze-based thermal flame sprayed coatings in view of self lubrication that take place under insufficient lubrication due to vaporization, localized load etc. In this work, hard oxide ceramic coating and bronze based coatings were investigated. Some of them were impregnated by polyethylene or oil sealant. The test revealed an effect of lubricant temperature on tribological properties of the coatings and its self sealing properties. The tests revealed an effect of porosity, hardness, adhesion and structure on wear rate and coefficient of friction of the coatings. The obtained results demonstrate an optimal load range for the coatings.

Tribological Improvement of Thermal-Sprayed Ti-Based Coatings Modified by 1200 K Nitridation

2005 ◽  
Vol 107 ◽  
pp. 133-136
Author(s):  
Somchai Thongtem ◽  
Titipun Thongtem ◽  
Thiraphat Vilaithong ◽  
Thachaphan Thawornkul
Keyword(s):  
Wear Resistance ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Bond Coat ◽  
Flow Rates ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings ◽  
Scanning Electron

Hardness and wear resistance of thermal-sprayed coatings of titanium containing 0, 3, 5 and 10 wt% bond coat (Ni5Al5Mo) were improved by 1200 K nitridation in 5, 10 and 15 ml.s-1 ammonia for 5 h. The improvement was due to the formation of TiN and Ti2N and governed by the ammonia flow rates and the percentage of bond coat. In addition, the coatings were analysed using a scanning electron microscope to determine the distribution of phases and cavities.

Ultrafast laser micromachining of thermal sprayed coatings for microheaters: design, fabrication and characterization

2004 ◽  
Vol 114 (1) ◽  
pp. 102-111 ◽  
Author(s):  
Tao Tong ◽  
Jinggao Li ◽  
Qing Chen ◽  
Jon P. Longtin ◽  
Szymon Tankiewicz ◽  
...  
Keyword(s):  
Laser Micromachining ◽  
Ultrafast Laser ◽  
Fabrication And Characterization ◽  
Sprayed Coatings ◽  
Thermal Sprayed Coatings

Surface Wear Improvement of Al-Alloys by Amorphous Iron-Based Flame-Sprayed Coatings

2011 ◽  
Vol 690 ◽  
pp. 405-408 ◽  
Author(s):  
Joel Voyer
Keyword(s):  
Wear Resistance ◽  
Flame Spraying ◽  
Flame Spray ◽  
Phase Content ◽  
Coating Properties ◽  
Amorphous Iron ◽  
Spray Process ◽  
Spraying Parameters ◽  
Iron Based ◽  
Sprayed Coatings

Partially amorphous iron-based coatings were produced onto aluminium using a powder flame-spraying process with a commercially available feedstock powder (Nanosteel SHS-7170) obtained from the Nanosteel Company Inc.. Several coating properties such as the microstructure, porosity, phase content, micro-hardness, and wear resistance were evaluated in the as-sprayed condition. As shown by the results obtained, the powder flame iron-based coatings perform relatively well in term of wear resistance in comparison with similar coatings produced using other expensive thermal spray techniques. Furthermore, this study shows that all the coating properties (microstructure, porosity, phase content, hardness and wear performance) depend strongly on the flame spraying parameters used. Finally, this paper demonstrates clearly that the flame-spray process may be used to produce amorphous iron-based coatings having a good wear resistance, and that this process appears to be a suitable inexpensive alternative to plasma or HVOF processes based on the present results.

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