Abrasive wear performance of SiC-UHMWPE nano-composites – Influence of amount and size

Abrasive wear performance of SiC-UHMWPE nano-composites – Influence of amount and size Ultra-high-molecular-weight-polyethylene (UHMWPE) is extensively researched tribo-material since it shows very low coefficient of friction (µ) apart from excellent wear resistance in various wear modes viz. adhesive, abrasive, erosive, reciprocating, fretting etc. Most of the times inclusion of right type of fillers/fibres shows excellent improvement in adhesive wear mode. However, it is extremely difficult to further improve the performance of a base matrix significantly in abrasive wear mode.Nano-fillers are reported as more efficient for performance enhancement as compared to their micro-counterparts. Hence two series of composites were developed by using very hard filler viz. silicon carbide (SiC) in different amounts and sizes. Micro-series contained six composites filled with micro-SiC (wt%; 0, 2, 4, 6, 8 and 10) while the nano-series contained eight composites filled with nano-SiC (wt%; 0, 1, 1.5, 2, 2.5, 3, 3.5 and 4). Both the series were characterized for physical and mechanical properties. With increase in SiC contents for both the series scratch hardness increased. Abrasive wear studies were conducted by sliding a pin of composite against the SiC abrasive paper in single-pass linear motion with fixed speed under different loads. It was observed that inclusion of SiC proved beneficial for enhancing wear resistance (approximately 15%) and optimum amount for micro-filler was around 8%. In case of nano-composites 3.5% was observed as an optimum amount to get the lowest wear rate. Nano-fillers proved to be approximately two times more effective than the micro-fillers. Increase in hardness of composite was responsible for increase in abrasive wear resistance. SEM studies indicated that inclusion of hard fillers mainly reduced the severity of micro-cutting mechanism leading to more wear resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Abrasive wear performance of SiC-UHMWPE nano-composites – Influence of amount and size

Loading next page...
 
/lp/elsevier/abrasive-wear-performance-of-sic-uhmwpe-nano-composites-influence-of-IFnCnyahou
Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0043-1648
eISSN
1873-2577
D.O.I.
10.1016/j.wear.2015.01.012
Publisher site
See Article on Publisher Site

Abstract

Ultra-high-molecular-weight-polyethylene (UHMWPE) is extensively researched tribo-material since it shows very low coefficient of friction (µ) apart from excellent wear resistance in various wear modes viz. adhesive, abrasive, erosive, reciprocating, fretting etc. Most of the times inclusion of right type of fillers/fibres shows excellent improvement in adhesive wear mode. However, it is extremely difficult to further improve the performance of a base matrix significantly in abrasive wear mode.Nano-fillers are reported as more efficient for performance enhancement as compared to their micro-counterparts. Hence two series of composites were developed by using very hard filler viz. silicon carbide (SiC) in different amounts and sizes. Micro-series contained six composites filled with micro-SiC (wt%; 0, 2, 4, 6, 8 and 10) while the nano-series contained eight composites filled with nano-SiC (wt%; 0, 1, 1.5, 2, 2.5, 3, 3.5 and 4). Both the series were characterized for physical and mechanical properties. With increase in SiC contents for both the series scratch hardness increased. Abrasive wear studies were conducted by sliding a pin of composite against the SiC abrasive paper in single-pass linear motion with fixed speed under different loads. It was observed that inclusion of SiC proved beneficial for enhancing wear resistance (approximately 15%) and optimum amount for micro-filler was around 8%. In case of nano-composites 3.5% was observed as an optimum amount to get the lowest wear rate. Nano-fillers proved to be approximately two times more effective than the micro-fillers. Increase in hardness of composite was responsible for increase in abrasive wear resistance. SEM studies indicated that inclusion of hard fillers mainly reduced the severity of micro-cutting mechanism leading to more wear resistance.

Journal

WearElsevier

Published: May 1, 2015

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from Google Scholar, PubMed
Create lists to organize your research
Export lists, citations
Access to DeepDyve database
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off