Analysis of sliding wear mechanism of oxide films on hot roll surfaces based on in-situ observation of wear process by the CCD microscope tribosystem

Kazuo Hokkirigawa, Teruko Kato, Tsutomu Fukuda, Masanori Shinooka

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The purpose of this investigation is to analyze microscopic sliding wear mechanism of oxide films on hot roll surfaces based on in-situ observation of wear process. For this purpose, a CCD microscope tribosystem, where ball on plate type wear apparatus was assembled, was newly developed and used. By using this system, dynamic wear processes of oxide films on hot roll surfaces were observed successively. Based on such observations, wear modes of oxide films on hot roll surfaces were classified into three types, such as "ploughing or powder formation", "flake formation" and "spalling". The conditions for the occurrence of all wear modes were summarized by a wear mode map which was newly introduced by using friction coefficient μ and dimensionless parameter Pmax/Hs(maximum contact pressure/Vickers hardness of substrate of hot roll). A wear controlling parameter Sw* was introduced to estimate specific wear rate of oxide films.

Original languageEnglish
Pages (from-to)777-784
Number of pages8
JournalToraibarojisuto/Journal of Japanese Society of Tribologists
Volume42
Issue number10
Publication statusPublished - 1997 Dec 1
Externally publishedYes

Keywords

  • CCD microscope
  • Hot roll
  • Oxide film
  • Wear
  • Wear mechanism
  • Wear mode map

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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