Tribological performance of halloysite clay nanotubes as green lubricant additives

Laura Peña-Parás, Demófilo Maldonado-Cortés, Patricio García, Mariana Irigoyen, Jaime Taha-Tijerina, Julia Guerra

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

© 2017 Elsevier B.V. Nanoparticles have been recently explored as lubricant additives for improving tribological performance of metal-forming tools. Halloysite clay nanotubes (HNTs) are naturally-occurring, low-cost, and non-toxic nanoparticles, making them attractive as green lubricant additives. In this study, HNTs were dispersed at varying concentrations (0.01, 0.05, and 0.10 wt%) within a polymeric lubricant for metal-forming applications. The ITeE-PIB Polish method for testing lubricants under scuffing conditions was conducted with a four-ball tribotester in order to obtain the scuffing load and load-carrying capacity (poz) under extreme pressures (EP), as this method has demonstrated to be sensitive to extreme-pressure additives; a block-on-ring test was used to obtain wear volume loss and coefficient of friction (COF). Surface roughness of worn materials was characterized with an optical 3D-surface measurement system. Results showed that 0.05 wt% HNTs delayed scuffing initiation, and increased the scuffing load and load-carrying capacity by 50% and ~72%, respectively. Wear volume loss and COF were both lowered by ~70%, and surface roughness was reduced due to the formation of a tribofilm. The improved lubrication provided by environmentally-friendly HNT lubricant additives shown in this study may result in considerable cost savings through lower energy consumption and longer tool life.
Original languageEnglish
Pages (from-to)885-892
Number of pages8
JournalWear
Volume376
DOIs
Publication statusPublished - 1 Jan 2017

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lubricants
Nanotubes
clays
Lubricants
nanotubes
Clay
load carrying capacity
metal forming
Metal forming
Load limits
coefficient of friction
surface roughness
Surface roughness
Wear of materials
Friction
Nanoparticles
nanoparticles
Surface measurement
energy consumption
lubrication

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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abstract = "{\circledC} 2017 Elsevier B.V. Nanoparticles have been recently explored as lubricant additives for improving tribological performance of metal-forming tools. Halloysite clay nanotubes (HNTs) are naturally-occurring, low-cost, and non-toxic nanoparticles, making them attractive as green lubricant additives. In this study, HNTs were dispersed at varying concentrations (0.01, 0.05, and 0.10 wt{\%}) within a polymeric lubricant for metal-forming applications. The ITeE-PIB Polish method for testing lubricants under scuffing conditions was conducted with a four-ball tribotester in order to obtain the scuffing load and load-carrying capacity (poz) under extreme pressures (EP), as this method has demonstrated to be sensitive to extreme-pressure additives; a block-on-ring test was used to obtain wear volume loss and coefficient of friction (COF). Surface roughness of worn materials was characterized with an optical 3D-surface measurement system. Results showed that 0.05 wt{\%} HNTs delayed scuffing initiation, and increased the scuffing load and load-carrying capacity by 50{\%} and ~72{\%}, respectively. Wear volume loss and COF were both lowered by ~70{\%}, and surface roughness was reduced due to the formation of a tribofilm. The improved lubrication provided by environmentally-friendly HNT lubricant additives shown in this study may result in considerable cost savings through lower energy consumption and longer tool life.",
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Tribological performance of halloysite clay nanotubes as green lubricant additives. / Peña-Parás, Laura; Maldonado-Cortés, Demófilo; García, Patricio; Irigoyen, Mariana; Taha-Tijerina, Jaime; Guerra, Julia.

In: Wear, Vol. 376, 01.01.2017, p. 885-892.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tribological performance of halloysite clay nanotubes as green lubricant additives

AU - Peña-Parás, Laura

AU - Maldonado-Cortés, Demófilo

AU - García, Patricio

AU - Irigoyen, Mariana

AU - Taha-Tijerina, Jaime

AU - Guerra, Julia

PY - 2017/1/1

Y1 - 2017/1/1

N2 - © 2017 Elsevier B.V. Nanoparticles have been recently explored as lubricant additives for improving tribological performance of metal-forming tools. Halloysite clay nanotubes (HNTs) are naturally-occurring, low-cost, and non-toxic nanoparticles, making them attractive as green lubricant additives. In this study, HNTs were dispersed at varying concentrations (0.01, 0.05, and 0.10 wt%) within a polymeric lubricant for metal-forming applications. The ITeE-PIB Polish method for testing lubricants under scuffing conditions was conducted with a four-ball tribotester in order to obtain the scuffing load and load-carrying capacity (poz) under extreme pressures (EP), as this method has demonstrated to be sensitive to extreme-pressure additives; a block-on-ring test was used to obtain wear volume loss and coefficient of friction (COF). Surface roughness of worn materials was characterized with an optical 3D-surface measurement system. Results showed that 0.05 wt% HNTs delayed scuffing initiation, and increased the scuffing load and load-carrying capacity by 50% and ~72%, respectively. Wear volume loss and COF were both lowered by ~70%, and surface roughness was reduced due to the formation of a tribofilm. The improved lubrication provided by environmentally-friendly HNT lubricant additives shown in this study may result in considerable cost savings through lower energy consumption and longer tool life.

AB - © 2017 Elsevier B.V. Nanoparticles have been recently explored as lubricant additives for improving tribological performance of metal-forming tools. Halloysite clay nanotubes (HNTs) are naturally-occurring, low-cost, and non-toxic nanoparticles, making them attractive as green lubricant additives. In this study, HNTs were dispersed at varying concentrations (0.01, 0.05, and 0.10 wt%) within a polymeric lubricant for metal-forming applications. The ITeE-PIB Polish method for testing lubricants under scuffing conditions was conducted with a four-ball tribotester in order to obtain the scuffing load and load-carrying capacity (poz) under extreme pressures (EP), as this method has demonstrated to be sensitive to extreme-pressure additives; a block-on-ring test was used to obtain wear volume loss and coefficient of friction (COF). Surface roughness of worn materials was characterized with an optical 3D-surface measurement system. Results showed that 0.05 wt% HNTs delayed scuffing initiation, and increased the scuffing load and load-carrying capacity by 50% and ~72%, respectively. Wear volume loss and COF were both lowered by ~70%, and surface roughness was reduced due to the formation of a tribofilm. The improved lubrication provided by environmentally-friendly HNT lubricant additives shown in this study may result in considerable cost savings through lower energy consumption and longer tool life.

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