What is it about?
In this study, lubricated and unlubricated reciprocating sliding wear behavior of 60NiTi is compared to 440C steel as a conventional bearing and wear resistant alloy.
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Why is it important?
60NiTi containing promising mechanical properties sounds to also have potential to be employed in other load bearing applications than rolling. This includes applications such as gears where contacting materials slide over each other. Based on the conventional wear theories and models, 60NiTi is expected to exhibit a high wear resistance as its hardness is in the same range and its H/E ratio is twice that of hardened steels However, 60NiTi, despite having a relatively high hardness compared to 440C steel, showed a significantly inferior sliding wear resistance, in terms of specific wear rates and CoF values, as compared to 440C steel under unlubricated conditions. On the other hand, under good lubrication conditions and selected loads, 60NiTi does not wear, making it suitable for sliding applications.
Perspectives
Writing this article was a great pleasure as it gave the authors the opportunity to collaborate with and use the first-hand knowledge and experience of the leader of the field, Dr. Christopher DellaCorte NASA, Glenn Research Center, Cleveland, Ohio.
Dr Khashayar Khanlari
Universite de Sherbrooke
Read the Original
This page is a summary of: Reciprocating Sliding Wear Behavior of 60NiTi As Compared to 440C Steel under Lubricated and Unlubricated Conditions, Tribology Transactions, April 2018, Taylor & Francis,
DOI: 10.1080/10402004.2018.1460434.
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