Fretting Wear Behavior of NC30Fe in Distilled Water and Hydrazine Solution

2013 ◽  
Author(s):  
Hong Guo ◽  
Pengdi Ren ◽  
Xiaoyu Zhang ◽  
Guangxiong Chen ◽  
Yi Ye
Keyword(s):  
Abrasive Wear ◽  
Aqueous Medium ◽  
Wear Mechanisms ◽  
Wear Behavior ◽  
Fretting Wear ◽  
Distilled Water ◽  
Steel Cylinder ◽  
Slip Regime ◽  
Wear Friction ◽  
Hydrazine Solution

In this study, fretting wear behavior of NC30Fe tubes against 1Cr13 stainless steel cylinder in distilled water and hydrazine solution was investigated at room temperature. Wear scar was analyzed systematically by NanoMap500DLS dual-mode profilometer, SEM, EDX. The results showed that the fretting logs were running in slip regime. The hydrazine solution may lead to corrosion. The friction coefficient in aqueous medium was lowered obviously, but it in distilled water was lower than that in hydrazine solution due to the effect of hydrazine solution. The wear was lightened in aqueous medium significantly, but it was more severe in hydrazine solution than that in distilled water for the reason of hydrazine solution. The abrasive wear, friction oxidation and delamination were the main wear mechanisms of NC30Fe in ambient. However, in aqueous medium the abrasive wear and delamination were the main wear mechanisms of NC30Fe.

Fretting wear behavior of thermal-oxidation on titanium alloy in air and vacuum atmosphere

2021 ◽  
pp. 2150135
Author(s):  
Liangliang Sheng ◽  
Xiangtao Deng ◽  
Hao Li ◽  
Yuxuan Ren ◽  
Guoqing Gou ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Thermal Oxidation ◽  
Wear Behavior ◽  
Fretting Wear ◽  
Partial Slip ◽  
Ti6al4v Titanium Alloy ◽  
Slip Regime ◽  
Air Atmosphere ◽  
Vacuum Atmosphere

In this work, an in-situ XPS analysis test combined self-designed high precision fretting wear tester was carried out to study the fretting wear behavior and the resulting tribo-oxidation of thermal-oxidation film on Ti6Al4V titanium alloy under the varied working atmosphere. The fretting-induced tribo-oxidation under the air and vacuum ([Formula: see text] Pa) environment was analyzed and its response on the resulting fretting wear resistance and damage mechanism was discussed. Results show that the working environment plays a significant role in the formation of tribo-oxidation and then determining the fretting wear resistance. Thermal-oxidation film in the vacuum atmosphere shows a better fretting wear resistance than that in the air atmosphere for all fretting regimes, except for partial slip regime (PSR) where there is an equivalent fretting wear resistance. Compared with the substrate Ti6Al4V titanium alloy, the thermal-oxidation film in the vacuum atmosphere performs a good protection for titanium alloy, especially for slip regime (SR), but not applied for air atmosphere.

Friction and Wear Behavior of Polypropylene/Montmorillonite Intercalated Nanocomposites

2011 ◽  
Vol 311-313 ◽  
pp. 92-95 ◽  
Author(s):  
Kui Chen ◽  
Tian Yun Zhang ◽  
Wei Wei
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Abrasive Wear ◽  
Wear Mechanisms ◽  
Mass Fraction ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Wear Behavior ◽  
Friction And Wear Behavior

Polypropylene/organo-montmorillonite (PP/OMMT) composites were investigated by XRD. Friction and wear behaviors of this composites sliding against GCr15 stainless steel were examined on M-2000 text rig in a ring-on-block configuration. Worn surfaces of PP and its composites were analyzed by SEM. The result shows that PP macromolecule chains have intercalated into OMMT layers and form intercalated nanocomposites. With the increase of mass fraction of OMMT, both wear rate and friction coefficient of composites first decrease then rise. With the increase of load, from 150 N, 200 N to 250 N, wear rate of composites increases, while friction coefficient reduces. The wear mechanisms of composites are connected with the content of OMMT. Composites were dominated by adhesive wear, abrasive wear and adhesive wear accompanied by abrasive wear respectively with the increase of OMMT content.

Study on the Fretting Wear Behavior and Mechanism of Nuclear Alloy 690 Tube

2012 ◽  
Vol 512-515 ◽  
pp. 1740-1746
Author(s):  
Jin Na Mei ◽  
Fei Xue ◽  
Zhao Xi Wang ◽  
Guo Dong Zhang ◽  
Lei Huang ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Wear Behavior ◽  
Damage Mechanism ◽  
Fretting Wear ◽  
Composition Analysis ◽  
Ambient Conditions ◽  
Inconel 600 ◽  
Delamination Wear ◽  
Slip Regime ◽  
Inconel 690

The fretting wear behavior of Inconel 690 for steam generator tube in a nuclear power plant against Inconel 600 (Cr plating) for anti-vibration bar was investigated in a plain cylinder/plane contact configuration under ambient conditions. The fretting wear tests were conducted under various applied normal loads of 20-100 N, slip amplitudes of 20-100 μm and frequency of 2 Hz. Observation of worn surface and corresponding chemical composition analysis were performed to clarify the fretting wear mechanism. It is found that the friction coefficient value increases firstly and then tends to stabilize with decrease in normal loads and increase in slip amplitudes. In addition, the fretting regime is identified to be gross slip regime, indicating that the fretting damage mechanism of Inconel 690 tube against Inconel 600 (Cr plating) bar is wear. The corresponding fretting wear mechanisms are dominant by delamination wear, abrasive wear and friction oxidation.

Abrasive Wear Property of Stellite190 Welding Coatings for Drill Tools

2011 ◽  
Vol 314-316 ◽  
pp. 1415-1419
Author(s):  
Ye Fa Tan ◽  
Xiao Long Wang ◽  
Yi Qiang Tu ◽  
Hua Tan ◽  
Chun Hua Zhou ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Abrasive Wear ◽  
Wear Mechanisms ◽  
Dry Friction ◽  
Wear Behavior ◽  
Corrosive Wear ◽  
Friction Condition ◽  
Wear Property ◽  
Welding Technology ◽  
Abrasive Wear Behavior

In order to improve the wear resistance of drill tools, stellite190 welding coatings were prepared by oxygen-acetylene flame welding technology. The abrasive wear behavior and wear mechanisms of the coatings were investigated in both dry and water friction conditions. The research results show that the wear losses of the coatings increase with the increase of loads and sliding speeds. The effects of sliding speeds on wear losses of the coatings become intense with the increase of loads. The wear losses of the coatings in water friction condition are bigger than those in dry friction condition. The main wear mechanisms of the coatings are micro-cutting and multi-plastic deformation wear in dry friction condition, and accompanied by stress corrosive wear in water friction condition.

scholarly journals The Effect of Displacement Amplitude on Fretting Wear Behavior and Damage Mechanism of Alloy 690 in Different Gaseous Atmospheres

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5778
Author(s):  
Long Xin ◽  
Lanzheng Kang ◽  
Weiwei Bian ◽  
Mengyang Zhang ◽  
Qinglei Jiang ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Displacement Amplitude ◽  
Fretting Wear ◽  
Partial Slip ◽  
Wear Volume ◽  
Stick Slip ◽  
Slip Regime ◽  
Mixed Regime ◽  
Alloy 690 ◽  
Strong Adhesion

The effect of displacement amplitude on fretting wear behavior and damage mechanisms of alloy 690 in air and nitrogen atmospheres was investigated in detail. The results showed that in air, the friction coefficient gradually increased with the increase in displacement amplitude which conformed to the universal law. In nitrogen, however, it had the highest point at the displacement amplitude of 60 μm due to very strong adhesion. Whether in air or nitrogen, the wear volume gradually increased with the increase in displacement amplitude. The wear volume in air was larger than that in nitrogen except at 30 μm. At 30 μm, the wear volume in air was slightly smaller. With an increase in displacement amplitude, a transformation of fretting running status between partial slip, mixed stick-slip, and final gross slip occurred along with the change of Ft-D curves from linear, to elliptic, to, finally, parallelogrammical. Correspondingly, the fretting regime changed from a partial slip regime to a mixed regime to a gross slip regime. With the increase in displacement amplitude, the transition from partial slip to gross slip in nitrogen was delayed as compared with in air due to the strong adhesion actuated by low oxygen content in a reducing environment. Whether in air or nitrogen, the competitive relation between fretting-induced fatigue and fretting-induced wear was prominent. The cracking velocity was more rapid than the wear. Fretting-induced fatigue dominated at 30 μm in air but at 30–60 μm in nitrogen. Fretting-induced wear won the competition at 45–90 μm in air but at 75–90 μm in nitrogen.

The Influence of Humidity on the Fretting Wear of Steel Surfaces Using Thin Layer Activation

1997 ◽  
Vol 119 (4) ◽  
pp. 840-845 ◽  
Author(s):  
P. De Baets ◽  
G. Kalacska ◽  
K. Strijckmans
Keyword(s):  
Thin Layer ◽  
Wear Behavior ◽  
Ambient Air ◽  
Fretting Wear ◽  
Material Transfer ◽  
Slip Regime ◽  
Measuring Techniques ◽  
Thin Layer Activation ◽  
Steel Surfaces ◽  
Layer Activation

It is generally known that the humidity in the surrounding atmosphere influences wear processes in general. For fretting wear several authors examined the influence of humidity on the wear scar morphology and the composition of the wear debris. No agreement between the different results has been found, yet. In the present study, a distinction is made between running-in and steady-state fretting wear. Especially for the running-in stage, the influence of the humidity in ambient air on the friction and wear behavior and material transfer of steel surfaces subjected to contact vibrations has been investigated. The fretting experiments were conducted with a spherical against a flat specimen under gross-slip regime. The fretting wear and accompanying material transfer between the contacting specimens quantitatively are measured with Thin Layer Activation method. It has been observed that high ambient humidity has a beneficial influence on the running-in fretting wear of steel surfaces. It has also been found that the results of several authors concerning the influence of humidity on the fretting wear of steel have to be treated with great care, as classical wear measuring techniques can give erroneous wear results.

The Influence of Powder Types and Plasma Spray Conditions on Abrasive Wear of Nanostructured and Conventional Al2O3/TiO2 Coatings

2007 ◽  
Vol 539-543 ◽  
pp. 1294-1299 ◽  
Author(s):  
You Wang ◽  
D.L. Wang ◽  
G. Liu ◽  
W. Tian ◽  
C.H. Wang
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Crack Resistance ◽  
Thermal Spray ◽  
Plasma Spray ◽  
Wear Mechanisms ◽  
Wear Behavior ◽  
Abrasive Wear Behavior ◽  
Tio2 Coatings

In this paper, Al2O3/TiO2 coatings via thermal spray approach using three different feedstock powders, i.e., (a) reconstituted nanosized Al2O3/TiO2 feedstock powders, (b) reconstituted nanosized Al2O3/TiO2/ZrO2/CeO2 feedstock powders and (c) conventional Al2O3/TiO2 feedstock powders are described. Effects of different powder types and various plasma spray conditions on the density, microhardness and crack resistance, especially on the abrasive wear behavior of the coatings have been evaluated. The result showed that the coatings sprayed using different feedstock powders exhibit different abrasive wear behavior with changing the plasma spray conditions. The coatings sprayed using the reconstituted nanosized Al2O3/TiO2/ZrO2/CeO2 feedstock powders showed a significantly improved wear resistance compared to the coatings sprayed using reconstituted nanosized Al2O3/TiO2 feedstock powders or conventional Al2O3/TiO2 feedstock powders. The wear mechanisms of the coatings were discussed.

Study on Fretting Wear Behavior of Medium Carbon Steel Used in Steel Worm Gear Pair

2010 ◽  
Vol 34-35 ◽  
pp. 1431-1435
Author(s):  
Zhu Jun Li ◽  
Da Tong Zhang ◽  
Ming Shao
Keyword(s):  
Abrasive Wear ◽  
Wear Mechanism ◽  
Wear Behavior ◽  
Medium Carbon Steel ◽  
Worm Gear ◽  
Fretting Wear ◽  
Wear Volume ◽  
Test Frequency ◽  
Test Parameters ◽  
Adhesion Wear

Fretting wear behavior of 40CrNiMoA steel was studied on a SRVⅣoscillating friction and wear tester. The results indicate that the fretting wear volume increase with test frequency, load and amplitude increasing. Meanwhile, the fretting wear mechanism is directly related to test frequency, load and amplitude. When they are small, the main fretting wear mechanism is abrasive wear, with these test parameters increasing, the main fretting wear mechanism turns to a combination of abrasive wear and adhesion wear. Based on the experimental results, the anti-fretting wear measures of steel worm gear pairs used in mechanical tracked regulator of tracked vehicle are discussed.

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