Research of Adhesion Bonds between Gas-Thermal Coating and Pre-Modified Base

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Nature of adhesive bonds between gas-thermal nickel alloy coating and carbon steel base was examined using laser profilometry, optical metallography, transmission and scanning electron microscopy. The steel surface was plastically pre-deformed by an ultrasonic tool. Proved that ultrasound pre-treatment modifies the steel surface. Increase of dislocation density and formation of sub micro-structure are base elements of surface modification. While using high-speed gas-flame, plasma and detonation modes of coatings, surface activation occurs and durable adhesion is formed. Ultrasonic pre-treatment of base material is effective when sprayed particles and base material interact through physical-chemical bond formation. Before applying high-speed gas flame and plasma sprayed coatings, authors recommend ultrasonic pretreatment, which creates periodic wavy topography with a stroke of 250 microns on the steel surface. Before applying detonation sprayed coatings, authors recommend ultrasound pretreatment that create modified surface with a uniform micro-topography.

Original languageEnglish
Article number012087
JournalIOP Conference Series: Materials Science and Engineering
Volume142
Issue number1
DOIs
Publication statusPublished - 2 Sep 2016
Event7th International Scientific Practical Conference on Innovative Technologies in Engineering - Yurga, Russian Federation
Duration: 19 May 201621 May 2016

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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