Effect of Ni addition on magnetism and corrosion resistivity of Ti/Co/Ni nanocomposites by sol–gel methods

Rodchanarowan, Aphichart; Chiyasak, Pongpak; Kalnaowakul, Phuri; Krajaisri, Pattraporn; Puranasiri, Rachakorn; Jaturapronperm, Sakdipat; Thanathattakum, Bhuwadol

doi:10.1016/j.jmmm.2022.169338

Cited by 2 publications

(1 citation statement)

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“…Zhang et al [27] investigated the effect of Co addition on the corrosion resistance of AlNiZrYCo x high entropy metal and showed a gradual increase in corrosion resistance with increasing Co content. Rodchanarowan et al [28] revealed that the increase in Ni content enhanced anti-corrosion performance and that the corrosion reaction was thermodynamically more difficult to occur as the Ni content increased. In addition, other elements such as Mn and Fe also play an important role in the corrosion resistance of alloys.…”

Section: Introductionmentioning

confidence: 99%

The effect of Mn addition on corrosion behaviour of equiatomic CoCrFeNi high entropy alloys in NaCl solution

Zhang

Zhu

Yuan

et al. 2022

Corrosion Engineering, Science and Technology

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The corrosion behaviour of equiatomic CoCrFeNi and CoCrFeNiMn high entropy alloys manufactured by the vacuum arc melting were studied in 3.5 wt-% NaCl solution. And the reasons for the differences in corrosion resistance were investigated in terms of microstructure, electrochemical behaviour and oxide film. The results show that the two alloys exhibit different corrosion characteristics, with CoCrFeNi alloy displaying typical passivation characteristics and CoCrFeNiMn alloy exhibiting activation behaviour. The CoCrFeNi HEA with compact and protective passive film has lower corrosion current density, larger film resistance and polarisation resistance, meaning a lower corrosion rate and superior corrosion resistance compared with those of CoCrFeNiMn alloy. Moreover, CoCrFeNiMn alloy forms a discontinuous and loose corrosion product film with higher Mn content and lower contents of Cr, Fe and Co compared to the matrix, which decreases its protection performance. The addition of Mn changes the electrochemical behaviour, and higher Mn oxides/hydroxides within oxide film are unfavourable to forming a stable passive film.

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Section: Introductionmentioning

confidence: 99%