3 results about "Nickel boride" patented technology

The present application relates to a kind of anode catalysts for alkaline system direct urea fuel cell, it is with nickel salt, H3BO3 and PVP dispersed in water heating reaction preparation precursor, then under inert atmosphere calcination obtained, by nitrogen-containing carbon material wrapped elemental nickel / nickel oxide / nickel boride nanocrystalline composite material.The present application introduces non-metallic boron and PVP carbon material, after calcination, active substance nickel / nickel oxide / nickel boride replaces traditional noble metal, by forming metal boride and oxide to adjust catalyst electronic structure, improve the catalytic activity and electrode conductivity of catalyst, with it as the anode catalyst for alkaline system direct urea fuel cell, with excellent electrochemical reaction activity.

A downhole pump barrel is nickel plated to a predefined thickness followed by Boronizing a portion of nickel matrix to create Nickel Boride layer and leaving a layer of nickel between the newly formed Nickel Boride and the barrel metal surface. The top layer of Nickel Boride provides a hard surface like chrome plating which increases the wear / abrasion resistance during the sucker rod pump production. The nickel matrix disposed beneath the Nickel Boride acts as a barrier from any corrosion attacks reaching the barrel metal surface.