期刊
SURFACE & COATINGS TECHNOLOGY
卷 416, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2021.127157
关键词
Magentoplasma accelerator; High thermal loads; Plasma-steel interaction
资金
- Ministry of Education, Science and Technological Development of the Republic of Serbia [171034]
The magnetoplasma compressor (MPC) is used for treatment and alloying of steel samples, with a high-speed plasma flow melting the surface and creating a new thin layer, resulting in a significant improvement of hardness after treatment within MPC.
Magnetoplasma compressor (MPC), a type of plasma accelerators, is used for treatment and alloying of steel samples: steel 100Cr6, steel 16MnCr5 and steel 42CrMo4. The high-speed plasma flow formed within the MPC, from helium with 5% of hydrogen as working gas, is directed to the surface of the samples. The energy flux density of the plasma flow in the plasma-sample interaction area is 9 J/cm(2). Plasma melts the near-surface layer and during the rapid cooling process, a thin layer with structure different from initial is created. Changes in the physical composition of the substrate are monitored depending on the number of plasma treatments. After treatment with a plasma produced within MPC, a significant improvement of hardness has been achieved.
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