The structure and properties of a hard alloy coating deposited by high-velocity pulsed plasma jet onto a copper substrate

A. D. Pogrebnyak, M. V. Il'yashenko, V. S. Kshnyakin, Yu N. Tyurin, Yu F. Ivanov

Результат исследований: Материалы для журналаСтатьярецензирование

6 Цитирования (Scopus)

Аннотация

Using a plasmatron operating in specially calculated regimes, tungsten carbide (WC) based coatings were deposited onto a copper crystallizer plate. It was found that a local hardness of the WC-Co coating may reach up to 1.3 × 104 N/mm2 and the coating adhesion to substrate may be as high as 270 MPa. The elemental and phase compositions of coatings were studied by Rutherford backscattering spectroscopy, X-ray diffraction, and transmission electron microscopy with electron diffraction. The surface morphology and depth-composition profiles of the coatings were studied by optical and scanning electron microscopy. The coating is composed of WC crystal grains with hexagonal close packed (hcp) lattice, α-and β-Co grains, and cubic WC grains. The average size of the hcp WC grains is 0.15 μm and that of the cobalt particles is about 25 nm. In addition, the grain boundaries contain W3Co3C particles with an average size of 15 nm.

Язык оригиналаАнглийский
Страницы (с-по)749-751
Число страниц3
ЖурналTechnical Physics Letters
Том27
Номер выпуска9
DOI
СостояниеОпубликовано - 1 сен 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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