Investigation of structure and properties of surfaced coatings based on titanium nickelide

2021 ◽  
Vol 4 ◽  
pp. 81-88
Author(s):  
A. I. Kovtunov ◽  
◽  
D. I. Plahotny ◽  
T. V. Semistenova ◽  
A. G. Bochkarev ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Phase Composition ◽  
Chemical Composition ◽  
Heat Resistance ◽  
Titanium Nickelide ◽  
Nickel Electrode ◽  
Structure And Properties ◽  
Relative Wear ◽  
Relative Wear Resistance

The conditions for formation of coatings based on titanium nickelide under the argon double-arc surfacing of titanium and nickel electrode wires on the titanium samples were shown. Results of evaluating the quality of formation and geometric parameters of the weld at the double-arc surfacing were presented. Relationship between the ratio of feed rates of nickel and titanium wires and chemical composition of the deposited coatings has been established. Investigations of the structure of the surfaced metal at the surfacing modes was carried out. It has been shown that argon double-arc surfacing formed coatings based on the Ti2Ni and TiNi. Mechanical and operational properties of surfaced coatings were studied — hardness, resistance to abrasion and heat resistance at 800 °С. Relative wear resistance of surfaced coatings is higher than that of titanium samples. Dependence of the relative wear resistance of the coatings on the chemical and phase composition was shown. Dependence of heat resistance of the surfaced coatings on the modes of surfacing and the chemical composition of the weld metal is established.

Research of the composition, structure and properties of deposited alloys of the titanium—aluminum system doped with chrome

2021 ◽  
pp. 470-475
Author(s):  
A.I. Kovtunov ◽  
A.G. Bochkarev
Keyword(s):  
Wear Resistance ◽  
Chemical Composition ◽  
Heat Resistance ◽  
Titanium Aluminide ◽  
Titanium Aluminides ◽  
Structure And Properties ◽  
Composition And Structure ◽  
Titanium Aluminum ◽  
Composition Structure

The results of the study of the processes of argon-arc surfacing of alloys based on titanium aluminides doped with chromium are presented. The effect of surfacing modes on the chemical composition and structure of the deposited alloys has been established. The results of testing the hardness, wear resistance and heat resistance of chromium-alloyed alloys based on titanium aluminide are presented.

Investigating formation, structure and properties of coatings based on Cu–Ti alloys

2019 ◽  
pp. 175-181
Author(s):  
A. I. Kovtunov ◽  
T. V. Semistenova ◽  
A. M. Ostryanko
Keyword(s):  
Wear Resistance ◽  
Heat Resistance ◽  
Chemical Compound ◽  
Wear Resistant Coating ◽  
Titanium Coating ◽  
Structure And Properties ◽  
Properties Of Coatings ◽  
Wear Resistant ◽  
Ti Alloys ◽  
Titanium Wire

The paper offers technology of argon-arc surfacing with titanium wire in order to form heat and wear resistant coating based on the titanium cuprides. The influence of surfacing modes on the chemical compound and structure of formed coatings is determined. The wear resistance and heat resistance at 600°C and 800°C were researched for copper–titanium coating with 8–63% titanium.

Relative wear resistance of borided steels

1976 ◽  
Vol 18 (9) ◽  
pp. 826-827
Author(s):  
V. P. Bezruchko ◽  
A. S. Korotya
Keyword(s):  
Wear Resistance ◽  
Relative Wear ◽  
Relative Wear Resistance

Microstructure and Corrosive Wear Property of Super High Chromium Cast Iron (SHCCI)

2011 ◽  
Vol 228-229 ◽  
pp. 905-908
Author(s):  
Liu Jie Xu ◽  
Shi Zhong Wei ◽  
Ji Wen Li ◽  
Guo Shang Zhang ◽  
Xiang Dong Ma
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Carbon Content ◽  
Corrosive Wear ◽  
Wear Property ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Relative Wear ◽  
Relative Wear Resistance ◽  
Chromium Cast Iron

To increase the wear resistance of components in slurry pump suffering from serious corrosive abrasion, new super high chromium cast iron (SHCCI) which contains 37wt.% chromium approximately and different carbon content were developed based on the high chromium cast iron with 26wt.% Cr (Cr26). The microstructure of SHCCI was investigated by SEM and XRD. The hardness and impact toughness of SHCCI was tested, and the corrosive wear property of SHCCI was also researched using MCF-30 type erosion abrasion tester under H3PO4 medium condition. The results show that the microstructure of SHCCI is composed of carbide of M7C3+M23C6, martensite and retained austenite. With the increase of carbon content, the hardness of SHCCI first increases and then decreases, the toughness increases, and the corrosive wear property decreases. The relative wear resistance of SHCCI is obviously superior to that of Cr26 cast iron, and the maximal relative wear resistance of SHCCI is three times higher than that of Cr26 cast iron.

scholarly journals RESULTS OF MECHANICAL RESISTANCE TEST OF LABORATORY SAMPLES COATING APPLIED BY LASER DEPOSITION

2016 ◽  
pp. 77-83
Author(s):  
S. A. Frolov ◽  
V. N. Svetashov ◽  
D. D. Vodorezov ◽  
D. S. Leontiev ◽  
O. M. Stolbova
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Protective Coatings ◽  
Laser Deposition ◽  
Resistance Test ◽  
Mechanical Resistance ◽  
Relative Wear ◽  
Relative Wear Resistance ◽  
Application Methods ◽  
Laboratory Specimen

The article analyzes the results of tests of mechanical resistance of laboratory specimen coating applied by laser deposition. Based on the analysis a conclusion is drawn about the effect of protective coatings and their application methods on the friction coefficient and relative wear resistance.

Effect of powdered laser surfacing modes on structure and properties of wear-resistant coating and new medium carbon steel with yield strength 1500 MPa

2019 ◽  
pp. 107-116
Author(s):  
T. V. Knyazyuk ◽  
G. D. Motovilina ◽  
V. V. Bobyr ◽  
V. V. Ryabov
Keyword(s):  
Wear Resistance ◽  
Phase Composition ◽  
Laser Radiation ◽  
Carbon Steel ◽  
Yield Strength ◽  
Heat Input ◽  
Medium Carbon Steel ◽  
Laser Deposition ◽  
Structure And Properties ◽  
Medium Carbon

This paper studies coatings obtained by laser cladding of M2 powder material (Hoganas, Belgium) on a new B1500 medium-carbon steel. The analysis of defects (pores, cracks), microstructure, phase composition, microhardness of the deposited coatings depending on heat input of laser radiation was performed. The results of tests for wear resistance of coating samples, which allow selecting the optimal modes of laser deposition, are presented.

STUDY OF THE RESISTANCE OF TAPERS WHEN APPLYING METAL-CLADDING LUBRICANT-COOLING FLUIDS

2021 ◽  
pp. 57-61
Author(s):  
IVAN Yu. IGNATKIN ◽  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Speed ◽  
Calculated Data ◽  
High Speed Steel ◽  
Additive Concentration ◽  
Relative Wear ◽  
Relative Wear Resistance ◽  
Industrial Oil ◽  
Rotary Speed

The paper discusses the results of comparative tests of the period of tap resistance in various technological environments. The workpieces were processed in the medium of industrial oil I-30 with using a 10 and 20 percent solution of the metal-coating additive “Valena SV” in the same oil. The tests were performed on M10×1 taps made of high-speed steel of the R6M5 brand during the production of through threaded holes in samples made of steel of the Steel 40X brand. The cutting speed varied from 5.7 to 11.1 m/min at the rotary speed of the tool ranging between 180 and 355 rpm. Based on the experimental material, a regression model of the relationship between the relative wear resistance and the additive concentration, and cutting speed has been determined. The author has evaluated the model adequacy and the convergence of the experimental and calculated data. It has been found that at a cutting speed of 11.1 m/min and an additive concentration of 20%, the relative wear resistance of the taps increased by 3.1 times. The results obtained testify to the eff ectiveness of the composition and confi rm the hypothesis of an increase in the wear resistance of the taps in the medium of metal-plating lubricating-and-cooling liquids.

Structure and Properties of Electrolytic Zn-Mn Coatings Deposited by the Galvanostatic Method

2013 ◽  
Vol 203-204 ◽  
pp. 216-219
Author(s):  
Magdalena Popczyk ◽  
Katarzyna Wykpis ◽  
Bożena Bierska-Piech
Keyword(s):  
Corrosion Resistance ◽  
Phase Composition ◽  
Chemical Composition ◽  
Surface Morphology ◽  
Phase Structure ◽  
Single Phase ◽  
Structure And Properties ◽  
Protective Properties ◽  
Galvanostatic Method ◽  
Galvanostatic Conditions

The Zn-Mn coatings were deposited under galvanostatic conditions from a sulfate galvanic bath. The influence of thiocarbamide additions in the bath on surface morphology, chemical and phase composition and corrosion resistance of the electrolytic Zn-Mn coatings was investigated. On the basis of these investigations it was found that Zn-Mn coatings can be obtained by the galvanostatic method. Morphology and chemical composition of the electrolytic Zn-Mn coatings depend on the thiocarbamide concentration in the galvanic bath. XRD investigations of obtained coatings showed a single phase structure (α-Mn1.08Zn2.92). The additions of thiocarbamide improve the protective properties of the Zn-Mn coatings.

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