Improvement of ambient temperature tribological properties of polycrystalline diamond compact treated by cobalt removal

Gou, Ruyi; Luo, Xun; Gao, Xu; Kang, Chenchen; Chen, Jingjing; Zhang, Jinfa; Long, Shunjun

doi:10.1016/j.diamond.2021.108567

Cited by 31 publications

(9 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to its exceptional thermal stability, hardness, strength, impact toughness, friction reduction and wear resistance, PDC serves as an outstanding material for wear-resistant tools and cutting tools. [5][6][7] Its versatility and effectiveness have made it widely utilised in various industries.…”

Section: Introductionmentioning

confidence: 99%

“…When the cobalt leaching of PDC after high temperature annealing its tribological properties can be further improved. 7 Under lubricating conditions, when using the PDC sample leaching cobalt, the lubricant acts as an insulator between the PDC layer and the surrounding air, mitigating the adverse effects of environmental factors on PDC. Simultaneously, due to the fluidity of the lubricating oil, it reduces the heat generated during frictional processes, 16 which is beneficial to further improve the tribological properties of PDC.…”

Section: Introductionmentioning

confidence: 99%

“…Polycrystalline diamond compact (PDC) is typically produced by sintering diamond powder and cemented carbide under high temperature and high pressure, using cobalt as a binder. Due to its exceptional thermal stability, hardness, strength, impact toughness, friction reduction and wear resistance, PDC serves as an outstanding material for wear‐resistant tools and cutting tools 5–7 . Its versatility and effectiveness have made it widely utilised in various industries.…”

Section: Introductionmentioning

confidence: 99%

“…To enhance the tribological properties of PDC, it was found that PDC after cobalt leaching had better thermal stability and tribological properties. It was mentioned Gou 7 that the tribological properties of PDC were affected by the depth of cobalt leaching. The results showed that PDC exhibited better tribological properties when the depth of cobalt leaching was 422 μm.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

Gou,

Chen,

Luo

2024

Lubrication Science

Self Cite

View full text Add to dashboard Cite

This study analysed and discussed the friction and wear properties, as well as the interface evolution behaviour of polycrystalline diamond compact (PDC) under various base oils, through conducting friction experiments on PDC/Si3N4 with different base oils. The friction and lubrication mechanism of PDC under different base oils were examined using scanning electron microscopy (SEM), x‐ray energy dispersive spectrometry (EDS), three‐dimensional white light interferometry, and Raman spectroscopy. The results of the study demonstrated that PDC exhibited the best friction and wear performance when lubricated with synthetic oil PAO, followed by castor oil. The inferior performance of paraffin oil can be attributed to its low viscosity, resulting in a lower presence of ions capable of passivating the carbon dangling bond. Consequently, paraffin oil displayed inadequate oxidation stability and increased susceptibility to oil film destruction, ultimately leading to suboptimal friction and wear characteristics. Overall, this study provides valuable insights for industrial applications, aiding in the selection of appropriate base oils as cutting fluids for PDC cutting tools and enhancing the friction and wear properties of PDC.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

Gou,

Chen,

Luo

2024

Lubrication Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…There are many kinds of diamond tools, including bonded diamond grits, CVD diamond, loose diamond abrasives, poly crystal diamonds, single crystal diamond, etc. [ 1 , 2 , 3 , 4 ]. Among them, the application amount of metal-bonded diamond tools prepared by powder metallurgy is the largest [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cu-Sn Addition on Corrosion Property of Pressureless Sintered Fe-Cu-Co Substrate Alloys

Tao

Chen

et al. 2023

Materials

View full text Add to dashboard Cite

Fe-Cu-Co prealloyed powder is used for bonding metal of diamond tools. In order to obtain diamond tools with good mechanical properties by pressureless sintering, it is necessary to add Cu-Sn sintering aids. The substrate also has high corrosion resistance requirements, which is conducive to the chemical erosion of diamond tools. This paper mainly studies the effects of Cu-Sn on the corrosion behavior of pressureless sintered Fe-Cu-Co substrate. The results show that the linear contraction rate and relative density of pressureless sintered Fe-Cu-Co alloy at 875 °C reach their peak when the Cu-Sn content is 8 wt.%, 15.13% and 97.5%, respectively. The substrate is mainly composed of α-Fe and Cu-rich phases, and selective corrosion occurs during electrochemical corrosion; namely, α-Fe grains are more prone to corrosion than Cu-rich grains to form porous corrosion surfaces. With the increase in Cu-Sn addition, the volume fraction of the Cu-rich phase increases, the corrosion current density and the passive current density gradually decrease, and the corrosion resistance of the alloy is improved. The amount and integrity of anodic passive film on the Fe-Cu-Co surface increases with the increase in Cu-Sn addition. The oxygen content of the anodic passivation film is lower than that of the active corrosion products of the α-Fe phase, thus reducing the oxygen concentration gradient and slowing down the corrosion. The addition of Cu-Sn is conducive to improving the corrosion resistance of Fe-Cu-Co alloy as the substrate of diamond tools.

show abstract

Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

Gou,

Chen,

et al. 2023

Int J Adv Manuf Technol

Self Cite

View full text Add to dashboard Cite

The effects of nano-molybdenum disul de (nano-MoS 2 ) in drilling uid and drilling uid on the tribological behavior of polycrystalline diamond compact (PDC) with cobalt leaching depth of 422µm were studied by ball-on-disk friction test, and the effects of concentration and bearing capacity were evaluated respectively. The results showed that the addition of nano-MoS 2 improves the lubrication effect of drilling uid and the friction performance of PDC. The lubrication mechanism of drilling uid and the mechanism of adding nano-MoS 2 to improve tribological properties are discussed. The results further deepen the understanding of the friction and wear mechanism of PDC in lubricating environment, and provide a theoretical reference for the application of PDC in the future petroleum eld.

show abstract

Improvement of ambient temperature tribological properties of polycrystalline diamond compact treated by cobalt removal

Cited by 31 publications

References 45 publications

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

Effect of Cu-Sn Addition on Corrosion Property of Pressureless Sintered Fe-Cu-Co Substrate Alloys

Lubrication performance of nano-molybdenum disulfide as additive in drilling fluid in polycrystalline diamond compacts

Contact Info

Product

Resources

About