Reduction of Shear Stresses in Friction Units with an Electrical Insulation Coating of the ITER Blanket Modules

Zaitsev, A. N.; Aleksandrova, Yu. P.

doi:10.3103/s1052618820090137

Cited by 3 publications

(1 citation statement)

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“…Modification with quasicrystals is a promising method for improving the performance properties of various materials, in particular to reduce friction and increase wear resistance [1,2]. Quasi-crystals are effective in coatings obtained by various methods: highvelocity gas spraying [3,4], electron beam physical vapor deposition (PVD) [5,6], plasma spraying [7][8][9][10], laser melting [9,11], etc. The properties of the coatings with inclusions of quasicrystals are significantly improved, in particular the friction coefficient is noticeably reduced [12].…”

Section: Introductionmentioning

confidence: 99%

Processing and Tribological Properties of PEO Coatings on AlZn5.5MgCu Aluminium Alloy with Incorporated Al-Cu-Fe Quasicrystals

et al. 2023

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The modification of ceramic PEO coatings developed for friction units is in trend of modern research aimed at the improvement of friction and wear. This study presents ceramic coatings formed on AlZn5.5MgCu aluminum alloy by microarc oxidation (PEO) in a one-stage technological process with inclusions of Al-Cu-Fe quasi-crystals. The technology of rubbing quasi-crystals into the surface of the coating during final polishing was also used. Friction and wear tests, followed by analysis of the surface and cross-sections by SEM microscopy, showed that quasicrystals affect the coating structure and frictional characteristics. The addition of a small amount of modifier to the electrolyte (0.5 percent), as well as rubbing-in technology, can reduce the coefficient of friction (up to 16 percent) and wear rate (up to 43 times) compared to pure ceramic coatings. More modifier provides a negative result.

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