As we all know an alloy is a substance
mixed by two or more than two kinds of chemical substances (at least one
component is a metal) with metal characteristics, generally a homogeneous
liquid fused by individual components, and obtained through condensation again.
We can often see Tungsten Products and Molybdenum Products such as Molybdenum Rod, Molybdenum Bar, Molybdenum Sheet, Molybdenum Plate、Molybdenum Ring、Molybdenum Electrode. But do you know what
a W-Mo alloy is?
Molybdenum Tungsten alloy (W-Mo alloy) is
composed of tungsten
and molybdenum. The
content of Tungsten
in the commonly used W-Mo alloy is between 30% ~ 50% (quality).
Then you may wonder by which method W-Mo
alloy is obtained. Actually it’s quite simple. The method for producing tungsten molybdenum alloy is the same
as that of producing metal molybdenum
and molybdenum alloy,
namely, there are two kinds of methods: powder metallurgy sintering processing
and smelting processing, which can produce rods, plates, wires or other
profiles.
Here comes how it’s used in modern
industry. Tungsten
and molybdenum alloy
containing Tungsten
30% (mass) has excellent corrosion resistance to liquid zinc, used to make a
churn in zinc smelting industry, pipeline, container liner and other
components. Tungsten
molybdenum alloy due to
the good high temperature strength, performance being similar with that of tungsten and proportion
being smaller than that of tungsten,
so it can be used as the high temperature components, electronic tube filament,
parts and other high temperature material among rockets and missiles under the
corresponding high temperature conditions.
Molybdenum and metal alloy in manufacturing the arms, in the top field of
rocket and missile etc., has an important position. In addition, the tungsten filament is used
to make the filament of a lamp, heating element in a high temperature furnace.
The metal Molybdenum is
easily processed into wire, brand, sheet, rod, etc., and has a wide application
in the electronic industry. Molybdenum
wire is used as small hooks supporting heating filament is an electric bulb,
electronic tube grid, etc. Molybdenum
and Molybdenum Boat are
used for vacuum plating.
There is no doubt that we owe the use of
W-Mo alloy to its special nature. The two elements: Tungsten and Molybdenum are at the same column in the periodic
table of the elements. They also show the same properties. The average
concentration of two elements in the earth's crust is 1.5 ppm. Molybdenum is a kind of
essential nutrients for plants and animals. At high concentrations, molybdenum can cause
poisoning, which is sometimes from the cases of alkaline ash leachate. Tungsten is an important
strategic metal, which is used for a variety of industrial applications. It is
usually mined from scheelite, CaWO4 powder, WO4 optical channel wolframite (Fe,
Mn). Tungsten is
released into the environment, for example through the use of its winter tires
and ammunition we can look on the whole, the environmental behavior of tungsten is not known.
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