Microstructure and mechanical properties of Ni-based high temperature solid-lubricating composites

Fei Li, Jun Cheng, Shengyu Zhu, Junying Hao, Jun Yang, Weimin Liu

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The poor mechanical properties are the main obstacle for the present solid-lubricating bulk materials in practical applications. In this work, the microstructure and high temperature mechanical properties of the solid-lubricating NiCrMoAl–12.5 wt%Ag–xCaF2/BaF2 eutectic (x=5 or 10 wt%) composites, denoted as the 5 F and 10 F respectively, have been evaluated. Both the composites display superior tensile strength of above 300 MPa from room temperature (RT) to 600 °C and extraordinary compressive strength that is above 500 MPa at 800 °C. These superior properties make the composite particularly suitable for bearing applications where the compression strength is an engineering factor to be preferably considered.

Original languageEnglish
Pages (from-to)475-481
Number of pages7
JournalMaterials Science and Engineering: A
Volume682
DOIs
StatePublished - 13 Jan 2017
Externally publishedYes

Keywords

  • High temperature
  • Mechanical properties
  • Ni-based composites
  • Solid-lubricating

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