scholarly journals Corrosion and Wear Behavior of WC–10Co4Cr Coating under Saturated Salt Drilling Fluid

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7379
Author(s):  
Hao Yin ◽  
Jian Liang ◽  
Xiaoyong Ren ◽  
Jie Zhao ◽  
Xin He ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Corrosion Potential ◽  
Erosion Resistance ◽  
Wear Behavior ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Corrosion Current ◽  
Corrosion And Wear ◽  
Simulation Results ◽  
Pipe Joint

Coating on the surface is one of the main ways to improve the corrosion resistance and wear resistance of materials. In this work, the corrosion, erosion, and wear resistance of WC–10Co4Cr coating and 27CrMoV substrate were compared by simulating the actual working conditions of the drill pipe. The simulation results show that the most serious corrosion occurred at the pipe body and the dominating erosion arose at the pipe joint closing to the inlet of the flow field. WC–10Co4Cr coating has excellent protection to 27CrMoV substrate, resulting in a 400 mV increase in corrosion potential, a two-orders-of-magnitude decrease in the corrosion current, and four times the improvement of the impedance value. The erosion resistance of the WC–10Co4Cr coating increased to more than 30% higher than that of the 27CrMoV substrate. The friction coefficient of the WC–10Co4Cr coating was much lower than that of the 27CrMoV substrate, and the wear resistance of the coating was higher than that of the substrate.

Experimental research on improving the wear resistance and anti-friction properties of drill pipe joints

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zhiqiang Huang ◽  
Zhongquan Yin ◽  
Wei Wu
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Flame Spray ◽  
Wear Resistant ◽  
Content Type ◽  
Pipe Joints ◽  
Friction Performance ◽  
Pipe Joint

Purpose The purpose of this study is to solve the oil drill pipe joints and casing excessive wear problems and to improve the drill pipe joint-casing wear resistance and anti-friction properties. Design/methodology/approach On the surface of the drill pipe joints using oxyacetylene flame bead weld (BW) wear-resistant welding wire ARNCO-100XTTM prepares welding layer, high-velocity oxygen fuel (HVOF) Cr3C275-NiCr25 prepares coating and subsonic flame spray and remelt (SFSR) Ni60 prepares coating, then comparing and analyzing the friction and wear of the three types of wear-resistant layers and the casing under the condition of 1.8 g/cm3 mud drilling fluid lubrication. The wear resistance and anti-friction performance of the drill pipe joints were evaluated based on the wear situation, finally revealing its friction and wear mechanisms. Findings Three types of wear-resistant layers can improve the surface wear resistance of drill pipe joints, the wear-resistant layer and the substrate are well combined and the welding layers and coating are both dense and uniform. The wear resistance of the HVOF-Cr3C275-NiCr25 coating is 10.9 times that of the BW-ARNCO-100XTTM weld layer, and the wear resistance of the SFSR-Ni60 weld layer is 2.45 times that of the BW-ARNCO-100XTTM weld layer. The anti-friction properties of SFSR-Ni60 welding layer is the best, followed by HVOF-Cr3C275-NiCr25 coating, and the anti-friction properties of BW-ARNCO-100XTTM welding layer is the worst among the three. Originality/value The research results of this paper have great practical value in the process and material of improving the wear resistance and anti-friction performance of the drill pipe joint casing.

scholarly journals Corrosion and Wear Behavior of PEO Coatings on D16T Aluminum Alloy with Different Concentrations of Graphene

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 249
Author(s):  
Wanying Liu ◽  
Yi Pu ◽  
Hongcheng Liao ◽  
Yuanhua Lin ◽  
Wanying He
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Wear Behavior ◽  
Corrosion And Wear ◽  
Plasma Electrolyte ◽  
Comprehensive Properties ◽  
Α Al2o3 ◽  
Plasma Electrolyte Oxidation ◽  
Peo Coatings

The effect of added graphene concentration on the microstructure, phase composition, corrosion- and wear- resistance of plasma electrolyte oxidation (PEO) coatings formed on D16T aluminum alloy in silicate electrolyte with different concentrations of graphene were investigated. The results show that the morphologies of the coatings with graphene were obviously different ascribed to the mode of graphene incorporated into the coating. The coatings consisted of mainly α-Al2O3, γ-Al2O3, and Al, which were divided into an outer porous layer and a dense inner layer. The thickness of the coatings increased non-linearly with graphene concentration. The corrosion resistance of the coatings with graphene was significantly improved. The wear resistance of the coatings was also greatly improved apart from the coating with 3 g/L graphene. The coating produced in the electrolyte with 2 g/L graphene exhibited the optimal comprehensive properties because graphene successfully incorporated into the coating via the pores and spread on the surface of the coating.

Corrosion and wear resistance of 32CrMoV13 steel nitrided by plasma

RSC Advances ◽  
2014 ◽  
Vol 4 (95) ◽  
pp. 52951-52958 ◽  
Author(s):  
Okba Belahssen ◽  
Abdelouahed Chala ◽  
Hachemi Ben Temam ◽  
Said Benramache
Keyword(s):  
Wear Resistance ◽  
Wear Behavior ◽  
Corrosion And Wear

This paper presents corrosion and wear behavior of the plasma-nitrided 32CrMoV13 steel.

The Influences of Additives and Heat Treatment on the Properties of Electroless Plating Ni-W-Mo-P Alloy on the Aluminum

2014 ◽  
Vol 941-944 ◽  
pp. 1585-1588
Author(s):  
Zu Xiao Yu ◽  
De Tao Zheng ◽  
Hong Guo ◽  
Yong Liu ◽  
Yuan Liang Luo ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Deposition Rate ◽  
Electroless Plating ◽  
Corrosion Potential ◽  
Alloy Coating ◽  
Corrosion Current ◽  
Maximum Hardness ◽  
Corrosion Properties

To improve the wear resistance and anti-corrosion properties of the aluminum, the electroless plating Ni-W-Mo-P alloy on the aluminum is necessary. The influences of heat treatment and additives (stabilizers) on the porosity, deposition rate, corrosion current, corrosion potential, microhardness and wear resistance of electroless plating Ni-W-Mo-P alloy coating, were investigated using electrochemical methods, etc. The results show that the deposition rate and anti-corrosion properties of electroless plating Ni-W-Mo-P are improved when the stabilizers, including KI (1mg/L) and “KIO3 (1mg/L) + Pb (Ac)2 (1mg/L)”, are added into bath, respectively. In addition, the maximum hardness (902 HV) and good wear resistance of Ni-W-Mo-P coatings are obtained when heated at 400°C (1h). However, its corrosion resistance is worse. Its microhardness is also obviously improved after heated at 200°Cfor 6 h, and the microhardness reaches to 950 HV.

Corrosion and wear resistance study of Ni-P and Ni-P-PTFE nanocomposite coatings

2011 ◽  
Vol 1 (3) ◽  
Author(s):  
Sharma Ankita ◽  
Ajay Singh
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Wear Behavior ◽  
Corrosion And Wear ◽  
Nanocomposite Coatings ◽  
X Ray ◽  
Fine Grain ◽  
Amorphous Nature ◽  
Pin On Disc ◽  
Steel Substrates

AbstractThis article reports on the corrosion and wear resistance of Ni-P and Ni-P-PTFE nanocomposite coatings deposited on mild steel substrates using the electroless plating technique. The coatings were characterized by scanning electron microscopy (SEM), energy dispersive analysis of X-Ray (EDAX), and X-ray diffractometry (XRD). The coatings were smooth and had thicknesses between 7 and 23 µm. They contained Ni, P, and additionally, F, in the case of the Ni-P-PTFE films. A broadening of the Ni peak in XRD was attributed to the amorphous nature and/or fine grain size of the films. Corrosion resistance was measured using immersion and electrochemical polarization tests in 3.5% NaCl solution whereas wear resistance was determined by the pin-on-disc method. Both Ni-P and Ni-P-PTFE coatings exhibited significant improvement in corrosion (in salty media) and wear behavior. Furthermore, the addition of PTFE in the coatings showed improvement in their corrosion resistance as well as a reduction in friction coefficient. Our testing revealed that the coatings’ wore out following the “adhesive type” mechanism.

scholarly journals Design and Performance Research of Flexible Drill Pipe Joint Based on Bionic Theory

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Chuanliu Wang ◽  
Pei Ju
Keyword(s):  
Flow Field ◽  
Mechanical Performance ◽  
Mechanical Test ◽  
Drilling Fluid ◽  
Fluid Velocity ◽  
Drill Pipe ◽  
Transmission Function ◽  
Study Results ◽  
Pipe Joints ◽  
Pipe Joint

Fatigue fracture is the main failure form of mining drill pipe joints, which directly leads to the occurrence of drill pipe drop accidents. Based on the principle of engineering bionics, the spine structure and kinematic behavior characteristics of cheetah were studied; the bionic design and trial production of drill pipe joints were carried out. For the bionic drill pipe joint, it separates the torsion transmission function from the connection function, and when the torsion transmission function of the joint fails, the connection function is still effective, so as to achieve the effect of “breaking the bones and connecting the ribs.” The mechanical and flow field properties of the bionic drill pipe joint were analyzed. Mechanical test results showed that, for the bionic drill pipe joint, the average tensile capacity was 555.48 kN and the average torsion capacity was 8914.13 N·m, which met the mechanical performance requirements. The flow field numerical simulation results showed that, when the drilling fluid velocity field and pressure field were stable and change evenly, there is no risk of leakage. The study results can provide a new research idea for the research and development of mine drill pipe joint with long life and antidropping function.

Effect of Cl- Concentration on Pitting Corrosion Property of Maraging Hardened Stainless Steel Based on Pourbaix Diagram

2018 ◽  
Vol 940 ◽  
pp. 59-64 ◽  
Author(s):  
Xin Zhang ◽  
De Ning Zou ◽  
Yu Qing Zhou ◽  
Xuan Na ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Pitting Corrosion ◽  
Corrosion Potential ◽  
Corrosion Current ◽  
Corrosion Property ◽  
Ion Concentration ◽  
Pitting Potential ◽  
Pitting Corrosion Resistance ◽  
The Matrix ◽  
Simulation Results

The corrosion behavior of maraging hardened stainless steel (MHSS) in different Cl-medium was investigated by thermodynamics simulation and electrochemical experiments. The simulation results show that the thermodynamic stability zone decreases with the increase of the concentration of Cl-. Some of chromium transformed into Cr(OH)2+and adsorbed on the surface of stainless steel, and others generated Cr2O3protecting the matrix. Mo reacted with O2to form MoO42-adsorbed on the surface of the material, which inhibited the destruction of Cl-. The electrochemical experiments indicate that the concentration of Cl-is in the range of 2%-7%. The pitting potential and self-corrosion potential of MHSS decreased linearly with the increase of ion concentration, and the pitting corrosion resistance of MHSS decreased. When the self-corrosion current increases from 1.9888 μA to 2.6524 μA, the corrosion tendency of the material enhances.

scholarly journals Optimization of Corrosion Wear Resistance of the NiCrBSi Laser-Clad Coatings Fabricated on Ti6Al4V

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 960
Author(s):  
Wanggen Li ◽  
Jun Li ◽  
Yinsi Xu
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Current Density ◽  
Corrosion Potential ◽  
Scanning Speed ◽  
Corrosion Current ◽  
Corrosion Wear ◽  
Essential Parameter ◽  
The Matrix ◽  
Corrosion State

Ni-based alloy powder (NiCrBSi) was applied to prepare coatings on Ti6Al4V by laser cladding to improve the wear resistance of the latter under corrosion. The scanning speed was found to be an essential parameter that could adjust the microstructure of the coatings. Changes in the microstructures of the coatings with the scanning speed were highlighted, and the relationships between the microstructures and microhardness, fracture toughness, corrosion, and corrosion wear resistance of the coatings were established. Results indicated that the matrix changes from Ti2Ni + TiNi to primary γ(Ni) + eutectics (γ(Ni) + Ni3Ti) with increasing scanning speed. Moreover, reinforcement phases changed from TiB2 + TiC (5 mm∙s−1) to TiB2 + TiC + Cr7C3 (11 mm∙s−1) to TiB2 + TiC + Cr7C3 + CrB (17 mm∙s−1). The average microhardness of the coatings first increased and then decreased, and the corresponding fracture toughness showed the opposite trend. The optimum combination of these properties was observed in the coating prepared at 11 mm∙s−1. This coating demonstrated excellent wear resistance in 3.5 wt.% NaCl solution, as well as a high corrosion potential, a low corrosion current density, and a low current density when the electrode initially entered a comparatively stable corrosion state. Moreover, compared with coatings prepared at other scanning speeds, this coating revealed a higher critical potential for oxidation film destruction. The results of this research collectively show that regulating the microstructures of laser-clad coatings by applying different scanning speeds is a feasible strategy to optimize the wear resistance of the coatings under corrosion.

Investigation Corrosion and Wear Behavior of Nickel-Nano Silicon Carbide on Stainless Steel 316L

2020 ◽  
Vol 1002 ◽  
pp. 33-43
Author(s):  
Nawal Mohammed Dawood ◽  
Nabaa S. Radhi ◽  
Zainab S. Al-Khafaji
Keyword(s):  
Silicon Carbide ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Wear Behavior ◽  
Corrosion And Wear ◽  
Corrosion Performance ◽  
Stainless Steel 316L ◽  
Nickel Coatings ◽  
Nano Silicon ◽  
Carbide Particles

This research signifies an attempt to apply composite coating by co-deposition coating and assessing, enhancement the Nickel coatings features, by adding the particles of silicon-carbide to solution of electrodeposited. Stainless steel specimens have been subject to electroplating coating utilizing Nickel and nanosilicon carbide particles (70-100 nm) with various amounts (16, 24, 32 and 40) g/L. After coating, the specimens were tested by SEM, AFM, impeded in a solution with 3.5 percent NaCl to investigate the corrosion performance. Then testing the microhardness, and wear resistance. Results obtained from this work showed a great reduction in corrosion currents caused by adding of inert nanoparticles. These enhancements had been detected on all conducted tests for corrosion and wear.

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