Investigation of electrochemical deposition of Fe-P alloys on polycrystalline platinum from an alkaline bath

Effect of P Content on the Corrosion Behavior of Electrodeposited Fe-P Coatings

“…[1][2][3][4][5][6][7] Among different coating methods, the electrodeposition of Fe-P alloy coatings for application in different areas, such as anode material for rechargeable lithium batteries 8 and HER electrodes, 9 has attracted much attention. [10][11][12] These coatings have the potential to be used as eco-friendly candidates to replace hard chromium, Ni-P, and Co-Ni coatings. 13 These coatings can be obtained from acidic and alkaline chloride and sulfate baths.…”

“…13 These coatings can be obtained from acidic and alkaline chloride and sulfate baths. 12,14,15 Chloride and sulfate baths (pH 2-3) containing sodium hypophosphite and different additives such as glycine as a complexing agent and oxalic acid as a stabilizer are common electrolytes used for electrodeposition of Fe-P film onto different substrates such as Cu, Pt, brass, and stainless steel. [12][13][14][15][16][17] Soares used an acidic bath containing FeSO 4 .7H 2 O and H 3 PO 4 to deposit Fe-P coatings containing less than 5 wt% P content.…”

“…12,14,15 Chloride and sulfate baths (pH 2-3) containing sodium hypophosphite and different additives such as glycine as a complexing agent and oxalic acid as a stabilizer are common electrolytes used for electrodeposition of Fe-P film onto different substrates such as Cu, Pt, brass, and stainless steel. [12][13][14][15][16][17] Soares used an acidic bath containing FeSO 4 .7H 2 O and H 3 PO 4 to deposit Fe-P coatings containing less than 5 wt% P content. 13 The P content of electrodeposited Fe-P film depends on different parameters, including bath temperature, bath P content and pH value, and electrodeposition current density.…”

“…13 The P content of electrodeposited Fe-P film depends on different parameters, including bath temperature, bath P content and pH value, and electrodeposition current density. [12][13][14] Studies have shown that the P content of electrodeposited Fe-P film decreases with increasing the pH value, glycine content, and the electrodeposition current density, however increasing the bath's P content (increasing the sodium hypophosphite concentration) leads to the deposition of coatings with higher P contents. 13,[16][17][18] The effect of current density on the P content is attributed to the effect of hydrogen evolution during the Fe-P deposition.…”