Alloying

It turns out that the bullet had been hardened by alloying lead with antimony, a toxic metal that leeched directly into the cerebral spinal fluid, thereby causing rapid onset central nervous system shutdown.

A final problem was the effect that increased material temperature had on the relative electrochemical reactivity of the base metal and its alloying constituents.

After the blow, the liquid metal was recarburized to the desired point and other alloying materials were added, depending on the desired product.

Alloying combines two types of metals to produce another metal with desired properties.

Alloying element roles Different elements serve different roles in the solder alloy: * Antimony is added to increase strength without affecting wettability.

Alloying of copper with zinc or tin to make brass or bronze was practised soon after the discovery of copper itself.

Alloy systems are classified by a number system ( ANSI ) or by names indicating their main alloying constituents ( DIN and ISO ).

Applications A titanium cylinder, "Grade 2" quality Titanium is used in steel as an alloying element ( ferro-titanium ) to reduce grain size and as a deoxidizer, and in stainless steel to reduce carbon content.

As in the case of tool steels, the surface modification caused by ion implantation includes both a surface compression which prevents crack propagation and an alloying of the surface to make it more chemically resistant to corrosion.

For most applications involving lead, varying amounts of antimony are used as alloying metal.

He adduces evidence from far-flung places such as China and the Americas to show that the smelting of copper universally preceded alloying with tin to make bronze.

It is the interaction of those allotropes with the alloying elements, primarily carbon, that gives steel and cast iron their range of unique properties.

Laser alloying has also been successfully used for the same purpose.

Nickel is an excellent alloying agent for certain precious metals and is used in the fire assay as a collector of platinum group elements (PGE).

Nitridization is slower and thereby more costly, and in addition it puts certain demands on the alloying metals in the steel to be able to create stable nitrides.

Oxygen, present in the air, readily combines with most metals to form metal oxides ; especially at higher temperatures encountered during alloying.

Platinum is used as an alloying agent for various metal products, including fine wires, noncorrosive laboratory containers, medical instruments, dental prostheses, electrical contacts, and thermocouples.

Stainless steel is defined as a regular steel alloy with greater than 10% by weight alloying content of Chromium.

The Bessemer process was so fast (10–20 minutes for a heat) that it allowed little time for chemical analysis or adjustment of the alloying elements in the steel.

The evidence of smelting or alloying that has been found is subject to some dispute and a common assumption by archaeologists is that objects were cold-worked into shape.