Polycrystalline diamond bearing testing for marine hydrokinetic application

Lingwall, Brent; Sexton, Tim; Cooley, C.H.

doi:10.1016/j.wear.2012.11.068

Cited by 41 publications

(17 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, due to the characteristics of the marine environment, such as high salinity, weak alkalinity, high static water pressure, corrosion, low viscosity, and unstable pH value (pH value of the natural seawater: 7.9−8.4; pH value of the contaminated seawater: <7.9), development and utilization of materials used in the marine environment face huge opportunities and great challenges. Marine exploitation requires bearings and sleeves with excellent strength, toughness, anticorrosion, and wear resistance . Therefore, it is of great significance to investigate the corrosion and wear behaviors of high strength and toughness bearing materials in the marine environment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and corrosive‐wear behaviors of a high strength and toughness Cu–15Ni–8Sn alloy in seawater

Cheng

Wang

Gan

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

The Cu–15Ni–8Sn alloy with high strength and toughness is a common bearing alloy, while it is often subjected to premature failure in service due to corrosion and wear. Therefore, the corrosion and wear behaviors of an ultra‐high‐strength and toughness Cu–15Ni–8Sn (wt%) alloy fabricated by hot isostatic pressing were investigated in this study. The results indicated that intergranular corrosion and pits were observed when the studied alloy was immersed into seawater for 30 days. When the Cu–15Ni–8Sn alloy slid in seawater, there was a synergistic effect between corrosion and wear. With the increase of normal load, the synergistic effect weakened initially and then enhanced the interaction between corrosion and wear changed from negative to positive, and the main wear mechanisms transferred from abrasive wear into delamination.

show abstract

Section: Introductionmentioning

confidence: 99%

Corrosion and corrosive‐wear behaviors of a high strength and toughness Cu–15Ni–8Sn alloy in seawater

Cheng

Wang

Gan

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…For traditional single crystal diamond cutter, the edge wear of diamond cutters and the flaking of the diamond abrasive seriously affects cutting efficiency . After that, sintered polycrystalline diamond compacts (PDC) is a potential material for ceramic cutting, due to its high hardness, wear resistance, and impact toughness . A better understanding of the wear mechanism is necessary to improve the cutting efficiency .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] After that, sintered polycrystalline diamond compacts (PDC) is a potential material for ceramic cutting, due to its high hardness, wear resistance, and impact toughness. [9][10][11][12] A better understanding of the wear mechanism is necessary to improve the cutting efficiency. 7,13 However, the specific friction and wear mechanism of ceramics sliding with PDC under humidity conditions is complex.…”

Section: Introductionmentioning

confidence: 99%

Controllable wear behaviors of silicon nitride sliding against sintered polycrystalline diamond via altering humidity

2018

View full text Add to dashboard Cite

The tribological behaviors of silicon nitride (Si3N4) sliding against sintered polycrystalline diamond (PCD) were investigated by varying the relative humidity (RH) in the testing atmosphere. The results indicated that higher RH corresponds to higher wear loss of Si3N4 and the wear loss of PCD almost fell close to zero. Especially in the case of 85% RH, both a maximum wear loss of Si3N4 and a maximum friction coefficient were achieved. In addition, this study revealed insights into the interface chemistry effects on the wear behavior of Si3N4 under humidity. When water molecules were introduced into the testing atmosphere, the hydrolysis reaction occurred on the Si3N4 surface with the formation of the Si‐O‐Si bond across the sliding interface. And then, the hydration reaction dominated the process, during which Si‐OH was formed through the bond fracture of the Si‐O‐Si. The X‐ray photoelectron spectroscopy results showed that the ratios of Si‐OH/Si‐O and Si‐N/Si‐OH+Si‐O bonds increased as the relative RH levels increased. As a consequence, the wear loss of Si3N4 significantly increased. Thus, due to the hydrolysis and hydration reactions, the tribological behaviors of Si3N4 against sintered polycrystalline diamond can be essentially controlled via varying RH levels.

show abstract

“…Apart from environmental sustainability, water lubrication has many other advantages, such as simplified design, low cost, good cooling performance and low friction coefficient due to the low viscosity of water. These bearings find application in Navy ships, boats, submarines, pumps and hydroelectric turbines [1][2][3][4]. Heretofore, research on water-lubricated bearings has focused primarily on the friction and wear characteristics of different bearing materials under water lubrication [5][6][7][8][9], pressure distribution in the water film [10,11] and structural design [4,[12][13][14][15]; only a few of them have addressed the stiffness and damping coefficients of these bearings.…”

Section: Introductionmentioning

confidence: 99%

Determination of stiffness coefficients of hydrodynamic water-lubricated plain journal bearings

Zhang

Gao

et al. 2015

Tribology International

View full text Add to dashboard Cite

Polycrystalline diamond bearing testing for marine hydrokinetic application

Cited by 41 publications

References 3 publications

Corrosion and corrosive‐wear behaviors of a high strength and toughness Cu–15Ni–8Sn alloy in seawater

Corrosion and corrosive‐wear behaviors of a high strength and toughness Cu–15Ni–8Sn alloy in seawater

Controllable wear behaviors of silicon nitride sliding against sintered polycrystalline diamond via altering humidity

Determination of stiffness coefficients of hydrodynamic water-lubricated plain journal bearings

Contact Info

Product

Resources

About