Features of macrostructure formation of modifi ed wear-resistant coatings from fl ux-cored wires

2020 ◽  
pp. 205-211
Author(s):  
N.F. Struchkov ◽  
G.G. Vinokurov
Keyword(s):  
Rare Earth ◽  
Statistical Model ◽  
Open Porosity ◽  
Apparent Porosity ◽  
Powder Coatings ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Modifying Additives ◽  
Cored Wires

The results of the macrostructure and levels of apparent porosity of wear-resistant coatings from flux-cored wires with modifying additives of corundum Al2O3, tungsten, tantalum and rare-earth concentrate of the Tomtor field (Republic of Sakha, Yakutia) are presented. Statistical model is proposed to describe the formation of layered macrostructure and to evaluate the open porosity of powder coatings.

Study of porosity and structure of wearresistant powder coatings with modifying additives

2019 ◽  
pp. 252-256
Author(s):  
N.F. Struchkov ◽  
G.G. Vinokurov ◽  
A.K. Kychkin
Keyword(s):  
Rare Earth ◽  
Open Porosity ◽  
Rare Earth Metals ◽  
Powder Coatings ◽  
Powder Wire ◽  
Powder Charge ◽  
Modifying Additives ◽  
Average Porosity ◽  
Hydrostatic Weighing ◽  
Coating Layers

Researches of open porosity and structure of the electroarc metallization coatings received from powder wire with the modifying additives in the form of the complex concentrator of Tomtorsky field rare-earth elements are conducted. It is established that open porosity depend on features of formation of layers which the sizes of refractory components of powder charge of wire significantly affect. It is shown that the porosity of layer on smooth substrate is close to zero, with removal from substrate the average porosity of coating layers increases. Keywords: electroarc metallization coating, rare-earth metals, open porosity, hydrostatic weighing, microstructure, Markov process.

Investigation of the formation of friction surface microgeometry of a wear-resistant coating during friction with a metal counterbody

2021 ◽  
pp. 147-152
Author(s):  
N.F. Struchkov ◽  
G.G. Vinokurov ◽  
O.N. Popov
Keyword(s):  
Statistical Model ◽  
Binomial Distribution ◽  
Friction Surface ◽  
Sliding Friction ◽  
Wear Particles ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Frictional Interaction ◽  
Surface Microgeometry ◽  
Friction Surfaces

Were is researched the friction surfaces of wear-resistant coatings with modifying additives Al2O3 and metal counterbody made of ShH15 steel, and also reveals the factors that influence the formation of coating microgeometry of surface during sliding friction. A statistical model has been developed based on the binomial distribution of removed wear particles to describe the frictional interaction during friction of the coating with a metal counterbody.

scholarly journals Structure and Properties of the Wear-Resistant Coatings Fused on Steel with Flux Cored Wires by an Electric Arc Method

2014 ◽  
Vol 15 (4) ◽  
pp. 213-234 ◽  
Author(s):  
V. E. Gromov ◽  
E. V. Kapralov ◽  
S. V. Raikov ◽  
Yu. F. Ivanov ◽  
E. A. Budovskikh
Keyword(s):  
Electric Arc ◽  
Structure And Properties ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Cored Wires

Application of Complex Concentrate of Rare-Earth Elements for Obtaining Electrometallic Coatings

2020 ◽  
Vol 992 ◽  
pp. 621-626
Author(s):  
N.F. Struchkov ◽  
G.G. Vinokurov ◽  
A.K. Kychkin
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Materials Science ◽  
Cored Wire ◽  
Modifying Additives ◽  
Promising Area ◽  
Structure Of Coatings ◽  
The Republic ◽  
Physical And Chemical ◽  
Cored Wires

The unique physical and chemical characteristics of rare earth elements make them attractive for use in a number of existing and innovative production lines. The use of complex concentrates of various deposits to obtain new materials is a promising area of modern materials science. The article presents the results of studies of electroarc metallization coatings of flux-cored wires with modifying additives. As additives, a complex concentrate of rare-earth metals from the deposits of the Republic of Sakha (Yakutia) and other modifying powders were used to obtain hardening phases. To determine the optimal composition of the modifying additives, various compositions of cored wires were made. An analysis of the structure of coatings showed a uniform distribution of the main elements of the cored wire, as well as a local distribution of unmelted particles of the modifying additives. The levels of open porosity and microhardness of the phase components of the coatings are determined. The prospects of using complex concentrate with rare-earth elements from deposits of the Republic of Sakha (Yakutia) as modifying additives for coatings with enhanced performance properties is shown.

Desirability-Based Performance Optimization of Wear-Resistant Coatings by HVOF Sprayed WC-Co Experiments

2011 ◽  
Vol 189-193 ◽  
pp. 3633-3639
Author(s):  
Ming Der Jean ◽  
Yih Hwang Yang ◽  
Tzu Hsuan Chien
Keyword(s):  
Wear Rate ◽  
Performance Optimization ◽  
Desirability Function ◽  
High Velocity Oxygen Fuel ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Designed Experiments ◽  
Control Factors ◽  
Desirability Analysis ◽  
Oxygen Fuel

This study presented the desirability function based on Taguchi designed experiments to solve multiple responses statistical optimal problems for the tungsten carbide/cobalt (WC-Co) coatings of high-velocity-oxygen-fuel (HVOF) processes. The eight control factors based on L18 arrays were conducted and the multi-responses of wear-resistant coatings such as hardness, deposited thickness and wear rate were evaluated simultaneously in the desirability-based experiments. Based on desirability analysis, the optimal settings have been identified, and the impacts of control factors are determined by analysis of variance on the multi-responses. Further, a confirmation run was conducted to validate the tests. Experimental results have shown that the hardness increased by 16.61% and the deposited thickness improved by 10.50%, while the wear rate decreased by 34.03%. It was clear that confirmation tests are greatly improved by way of the desirability-based multi-responses on HVOF WC-Co experiments, and these findings achieved the desired values on wear-resistant coatings. The proposed procedure was applied at HVOF sprayed WC-Co experiments, and the implementation results demonstrated its feasibility and effectiveness to maximize hardness, make a target of deposited thickness value and minimize wear rate by a HVOF.

Production of wear-resistant coatings on pump and fitting components by anodizing in a supercooled electrolyte

1990 ◽  
Vol 26 (9) ◽  
pp. 479-482
Author(s):  
E. E. Aver'yanov ◽  
R. M. Galimzyanov ◽  
K. Z. Gilyazova ◽  
V. A. Popov ◽  
A. V. Rabinovich ◽  
...  
Keyword(s):  
Wear Resistant ◽  
Wear Resistant Coatings
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