Аннотация
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.
Язык оригинала | Английский |
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Номер статьи | 012087 |
Журнал | IOP Conference Series: Materials Science and Engineering |
Том | 142 |
Номер выпуска | 1 |
DOI | |
Состояние | Опубликовано - 2 сен 2016 |
Событие | 7th International Scientific Practical Conference on Innovative Technologies in Engineering - Yurga, Российская Федерация Продолжительность: 19 мая 2016 → 21 мая 2016 |
ASJC Scopus subject areas
- Materials Science(all)
- Engineering(all)