Prediction of influence of Co-Cr-Mo alloy coating on the wear rate of aluminium with HCl solution

2021 ◽  
Author(s):  
Y. Pratapa Reddy ◽  
K. Lakshmi Narayana ◽  
M. Kedar Mallik
Keyword(s):  
Wear Rate ◽  
Alloy Coating ◽  
Hcl Solution

Electrochemical Behavior of Fe-Cr-Mo-C-B Amorphous Alloy Coating in HCl Solution

2011 ◽  
Vol 291-294 ◽  
pp. 18-23
Author(s):  
Qing Jun Chen ◽  
Lin Li Hu ◽  
Xian Liang Zhou ◽  
Xiao Zhen Hua
Keyword(s):  
Amorphous Alloy ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Low Frequency ◽  
Alloy Coating ◽  
Open Circuit ◽  
Polarization Curves ◽  
Hcl Concentration ◽  
Hcl Solution

The corrosion behavior of Fe44Cr16Mo16C18B6amorphous alloy coating was studied by electrochemical polarization curves and electrochemical impedance spectroscopy (EIS) in different HCl concentration solution at room temperature. Experimental results show that the polarization curves of the coating present a wide passivation range under open circuit potential and icorrincrease from 1.049×10-5A/cm2to 1.487×10-5A/cm2with HCl solution from 0.5M to 2.0M. The EIS of coating are composed of high-frequency inductive loop and low-frequency capacitance arc, which is different from the EIS of other amorphous alloys, the Rt is up to 5789Ω·cm2in 2M HCl solution. The especial equivalent circuit model R(RL)(Q(R(QRW))) can better interpret the corrosion behavior of the amorphous alloy coating.

Effects of Tribo-Couple and Environmental Medium on the Tribological Properties of the Graphite/CaF2/TiC/Ni-Base Alloy Composite Coating

2013 ◽  
Vol 834-836 ◽  
pp. 644-648
Author(s):  
Bin Cai ◽  
Hua Bing Li ◽  
Ye Fa Tan ◽  
Hong Wei Li ◽  
Qi Feng Jing ◽  
...  
Keyword(s):  
Wear Rate ◽  
Composite Coating ◽  
Tribological Properties ◽  
Base Alloy ◽  
Alloy Coating ◽  
Dry Sliding ◽  
Wear Property ◽  
Alloy Composite ◽  
Nacl Solution ◽  
Wear Rates

The graphite/CaF2/TiC/Ni-base alloy composite coating was prepared on the surface of 45 carbon steel by plasma spray. Effects of loads, friction counterparts and lubricants on the tribological properties of the composite coating were investigated. The results show that the wear rate of the GCTN composite coating against Si3N4is 0.67×10-3mm3/m, which is about 2 times that against GCr15 steel, because Si3N4induces micro-cutting wear of the composite coating. Water and NaCl solution may induce increasing of friction coefficients and wear rates. Especially, wear rate of the GCTN composite coating in NaCl solution is increased by 3.1 times compared with those under dry sliding and water. The GCTN composite coating presents better anti-wear property than Ni-base alloy coating in different environmental mediums.

Tribological Properties of Ni-Base Alloy Coatings Reinforced by SiC Particles

2012 ◽  
Vol 538-541 ◽  
pp. 181-185
Author(s):  
Ting Xu ◽  
Ye Fa Tan ◽  
Bin Liu
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Carbon Steel ◽  
Wear Rate ◽  
Tribological Properties ◽  
Adhesive Wear ◽  
Base Alloy ◽  
Composite Coatings ◽  
Alloy Coating ◽  
Sic Particles

Ni-Co/SiC composite coatings embedded with different sizes of micron-Sic particles were prepared on the surfure of 45 carbon steel through electrochemical deposition. The effects of size of SiC particles on the microstructure, the hardness and tribological properties of the composite coatings were investigated. The results show that the decrease of the size may increase the hardness, make microstructure closer and greatly improve their wear resistance. The Ni-Co/SiC(W7) coating exhibit better integrated properties, its hardness was HV505, 20 percent higher than Ni-Co alloy coating, and its wear rate was only 1/5 of the Ni-Co/SiC(W40) coating. The wear mechanisms of the coatings are mainly plastic deformation with slight adhesive wear.

scholarly journals OPTIMIZATION OF THE PROCESS OF MULTILAYER CENTRIFUGAL INDUCTION SURFACING OF COATINGS BASED ON ALUMINUM ALLOYS

2021 ◽  
Vol 2 (55) ◽  
pp. 35-41
Author(s):  
М.A. Belotserkovsky ◽  
◽  
A.A. Kurilyonok ◽  
K.E. Belyavin ◽  
I.A. Sosnovsky ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Wear Rate ◽  
Heating Temperature ◽  
Alloy Coating ◽  
Wear Intensity ◽  
Coating Material ◽  
Isothermal Exposure ◽  
Factors Affecting ◽  
Antifriction Coatings

As a result of the conducted research, using the methods of mathematical planning of the experiment, the optimization of the process of multilayer centrifugal induction surfacing of antifriction coatings based on aluminum alloys was performed, which made it possible to develop a mathematical model and determine the optimal range of values of technological modes. The dependences of the minimum wear rate of the coating material Iq (mg/m) on the parameters of multilayer induction centrifugal surfacing of aluminum alloy coatings are established. The main factors affecting the wear rate of the coating were the heating temperature of the part T (°C), the time of the isothermal exposure t (min) and the speed of rotation of the part n (rpm). Based on the results of computational and experimental modeling, it is shown that in order to obtain the optimal wear intensity of the aluminum alloy coating material, the parameters of the multilayer centrifugal induction surfacing process should be as follows: the rotation speed of the part n = 1,750–1,875 rpm, the heating temperature of the part T = 775–800 °C, the isothermal exposure time t = 7–8 min.

scholarly journals Tribocorrosion Properties of NiCrAlY Coating in Different Corrosive Environments

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1864 ◽  
Author(s):  
Bo Li ◽  
Yimin Gao ◽  
Cong Li ◽  
Hongjian Guo ◽  
Qiaoling Zheng ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Current Density ◽  
Corrosion Current Density ◽  
Corrosion Current ◽  
Deionized Water ◽  
Atmospheric Plasma ◽  
Wear Properties ◽  
Nicraly Coating ◽  
Hcl Solution

Atmospheric plasma spraying (APS) was taken to fabricate the NiCrAlY coating. The corrosion-wear properties of NiCrAlY coating was measured respectively under deionized water, artificial seawater, NaOH solution and HCl solution. Experimental results presented that the as-sprayed NiCrAlY coating consisted of Ni3Al, nickel-based solid solution, NiAl and Y2O3. In deionized water, the coating with the lowest corrosion current density (icorr) of 7.865 × 10−8 A/cm2 was hard to erode. Meanwhile, it presented a lower friction coefficient and the lowest wear rate. In HCl solution, NiCrAlY coating gave the highest corrosion current density (icorr) of 3.356 × 10−6 A/cm2 and a higher wear rate of 6.36 × 10−6 mm3/Nm. Meanwhile, the emergence of Al(OH)3 on the coating surface could reduce the direct contact between the counter ball and sample effectively, which was conducive to the lowest friction coefficient of 0.24.

Leaching of Rare Earth Metals from Manganese Nodule by HCl Solution

2015 ◽  
Vol 53 (9) ◽  
pp. 637-641
Author(s):  
Chul-Woo Nam ◽  
Kyung-Ho Park ◽  
Hyun-Ho Kim ◽  
Jin-Tae Park
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Manganese Nodule ◽  
Hcl Solution

Prediction of Tread Pattern Wear by an Explicit Finite Element Model3

2007 ◽  
Vol 35 (4) ◽  
pp. 276-299 ◽  
Author(s):  
J. C. Cho ◽  
B. C. Jung
Keyword(s):  
Finite Element ◽  
Wear Rate ◽  
Tangential Stress ◽  
Rate Equation ◽  
Constitutive Equations ◽  
Slip Velocity ◽  
Test Results ◽  
Explicit Finite Element ◽  
Driving Condition ◽  
Driving Conditions

Abstract Tread pattern wear is predicted by using an explicit finite element model (FEM) and compared with the indoor drum test results under a set of actual driving conditions. One pattern is used to determine the wear rate equation, which is composed of slip velocity and tangential stress under a single driving condition. Two other patterns with the same size (225/45ZR17) and profile are used to be simulated and compared with the indoor wear test results under the actual driving conditions. As a study on the rubber wear rate equation, trial wear rates are assumed by several constitutive equations and each trial wear rate is integrated along time to yield the total accumulated wear under a selected single cornering condition. The trial constitutive equations are defined by independently varying each exponent of slip velocity and tangential stress. The integrated results are compared with the indoor test results, and the best matching constitutive equation for wear is selected for the following wear simulation of two other patterns under actual driving conditions. Tens of thousands of driving conditions of a tire are categorized into a small number of simplified conditions by a suggested simplification procedure which considers the driving condition frequency and weighting function. Both of these simplified conditions and the original actual conditions are tested on the indoor drum test machines. The two results can be regarded to be in good agreement if the deviation that exists in the data is mainly due to the difference in the test velocity. Therefore, the simplification procedure is justified. By applying the selected wear rate equation and the simplified driving conditions to the explicit FEM simulation, the simulated wear results for the two patterns show good match with the actual indoor wear results.

Evolving the Banded Radial Tire

1987 ◽  
Vol 15 (1) ◽  
pp. 30-41 ◽  
Author(s):  
E. G. Markow
Keyword(s):  
Finite Element ◽  
Wear Rate ◽  
Finite Element Modeling ◽  
Laboratory Tests ◽  
Rolling Resistance ◽  
Two Dimensional ◽  
Theoretical Discussion ◽  
Radial Tire ◽  
Puncture Resistance ◽  
Element Modeling

Abstract Development of the banded radial tire is discussed. A major contribution of this tire design is a reliable run-flat capability over distances exceeding 160 km (100 mi). Experimental tire designs and materials are considered; a brief theoretical discussion of the mechanics of operation is given based on initial two-dimensional studies and later on more complete finite element modeling. Results of laboratory tests for cornering, rolling resistance, and braking are presented. Low rolling resistance, good cornering and braking properties, and low tread wear rate along with good puncture resistance are among the advantages of the banded radial tire designs.

Sign in / Sign up

Export Citation Format

Share Document