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Electroless nickel-boron plating developed as a variant of the similar nickel-phosphorus process, discovered accidentally by Charles Adolphe Wurtz in 1844. [2]In 1969, Harold Edward Bellis from DuPont filed a patent for a general class of electroless plating processes using sodium borohydride, dimethylamine borane, or sodium hypophosphite, in the presence of thallium salts, thus producing a ...
Nickel boride is the common name of materials composed chiefly of the elements nickel and boron that are widely used as catalysts in organic chemistry. [1] [2] Their approximate chemical composition is Ni 2.5 B, [3] and they are often incorrectly denoted "Ni 2 B" in organic chemistry publications.
A similar process uses a borohydride reducing agent, yielding a nickel-boron coating instead. Unlike electroplating , processes in general do not require passing an electric current through the bath and the substrate; the reduction of the metal cations in solution to metallic is achieved by purely chemical means, through an autocatalytic reaction.
Dinickel boride is a chemical compound of nickel and boron with formula Ni 2 B. [1] [2] It is one of the borides of nickel.The formula "Ni2 B" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride.
Boriding, also called boronizing, is the process by which boron is added to a metal or alloy. It is a type of surface hardening. In this process boron atoms are diffused into the surface of a metal component. The resulting surface contains metal borides, such as iron borides, nickel borides, and cobalt borides. As pure materials, these borides ...
The Model 5903 was manufactured from 1990 to 1997, and featured an aluminum alloy frame and a stainless steel slide with a 15-round double-stack magazine. Produced from 1989 to 1998. The Model 5904 has an aluminum alloy frame and blued carbon steel slide, also with a 15-round magazine, and inspired two other derivative pistols, the Smith ...
The borides can be classified loosely as boron rich or metal rich, for example the compound YB 66 at one extreme through to Nd 2 Fe 14 B at the other. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more, the compound is boron rich; if it is less, then it is metal rich.
Trinickel boride can be obtained also by compressing nickel and boron powders with explosives. [6] Recently it has been found that Ni 3 B can be formed (together with other nickel borides) by heating sodium borohydride with powdered nickel metal to 670 °C in a closed vessel, so that the released hydrogen creates a pressure of up to 3.4 MPa ...