XRD, FESEM and XPS studies on heat treated Co–W electrodeposits

Hydrogen generation from alkaline NaBH 4 solution using electroless-deposited Co–W–P supported on γ-Al 2 O 3

“…In the Fig. 1(g), Co 2p 3/2 peak at 777.8 eV stands for Co metal [33], which agrees well with the XRD results, as seen in Fig. 1(e).…”

Graphene/MxWO3 (M=Na, K) nanohybrids with excellent electrical properties

“…The curves of the sample before H 2 treatment could be fitted as two spin-orbit doublets, W4f 7/2 and W4f 5/2 for the interval of about 2.1 eV. The peaks at 34.7 and 36.8 eV were attributed to the existence of W 5+ , while the peaks at 36.2 and 38.3 eV were attributed to that of W 6+ [30]. On the other hand, the sample after H 2 treatment also exhibited two spin-orbit doublets.…”

Effect of P codeposition on the structure and microhardness of Co–W coatings electrodeposited from gluconate bath

“…Recently, electrodeposited cobalt and its alloy coatings, especially Co–W and Co–P coatings, have been studied extensively for their amorphous nature, increased hardness, higher thermal stability and enhanced wear and corrosion resistance. These coatings are also considered as potential replacement for conventional hard chromium which poses health and environmental threat.…”

“…But, in recent times, owing to their nontoxic nature and easy availability, usage of gluconate as a complexing agent has gained increased attention in electro as well as electroless deposition methods. Co–W coatings obtained from gluconate baths under various conditions have been observed to demonstrate high hardness , significant corrosion resistance , wear resistance and good thermal stability with glass‐forming ability (GFA) , making them a strong and potential contender for the replacement for conventional hard chromium. However, the effect of alloying non‐metal like phosphorous to improve the properties of cobalt‐based alloys is a topic of recurring interest.…”

“…Most of the Co–W–P and other ternary alloy coatings have been obtained from citrate baths while recent investigations on the codepositon of P and W individually with cobalt from gluconate bath have also led to promising results . Weston et al have used gluconate bath for the electrodeposition of wear and corrosion resistant Co–W alloys and established a relationship between the bath composition and the alloy properties .…”