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Page "Transparent ceramics" ¶ 63
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sintering and powder
This process involves sintering a mixture of clay and limestone to about, then grinding it into a fine powder which is then mixed with water, sand and gravel to produce concrete.
Alumina, silicon carbide, and tungsten carbide are made from a fine powder of their constituents in a process of sintering with a binder.
The λ < sup >− 4 </ sup >- type scattering is caused by the nanoporous structure ( a narrow pore size distribution around ~ 70 nm ) obtained by sintering monodispersive alumina powder.
* dp3D ( discrete powder 3D ), DEM code oriented toward material science engineering applications ( powder compaction, powder sintering, fracture of brittle materials ...).
After enrichment the uranium dioxide ( UO < sub > 2 </ sub >) powder is fired in a high-temperature, sintering furnace to create hard, ceramic pellets of enriched uranium dioxide.
The study of sintering and of powder-related processes is known as powder metallurgy.
Almost any substance can be obtained in powder form, through either chemical, mechanical or physical processes, so basically any material can be obtained through sintering.
For instance, the Young's Modulus E < sub > n </ sub > of sintered iron powders remains insensitive to sintering time, alloying, or particle size in the original powder, but depends upon the density of the final product:
A special form of sintering, still considered part of powder metallurgy, is liquid-state sintering.
Liquid phase sintering is the process of adding an additive to the powder which will melt before the matrix phase.
The steps were: ( i ) molding the powder ; ( ii ) annealing it at about 2500 ° C to make it conducting ; ( iii ) applying current-pressure sintering as in the method by Weintraub and Rush.
Spark plasma sintering ( SPS ) is a form of sintering where both external pressure and an electric field are applied simultaneously to enhance the densification of the metallic / ceramic powder compacts.
Pressureless sintering is the sintering of a powder compact ( sometimes at very high temperatures, depending on the powder ) without applied pressure.
The powder metallurgy process generally consists of four basic steps: ( 1 ) powder manufacture, ( 2 ) powder blending ,( 3 ) compacting, ( 4 ) sintering.
Two main techniques used to form and consolidate the powder are sintering and metal injection molding.
The history of powder metallurgy and the art of metals and ceramics sintering are intimately related.

sintering and was
The estimated sintering temperature was 2000 ° C.
In the US, sintering was first patented by Duval d ’ Adrian in 1922.
BSA's components businesses became Manganese Bronze Components Division, comprising sintering, precision casting and metal powders: this division was sold in 2003 and went bankrupt a short while later.
In these early manufacturing operations, iron was extracted by hand from metal sponge following reduction and was then reintroduced as a powder for final melting or sintering.
A sintering plant was constructed on the northern bank of the Magpie River, two miles west of the mine, to treat the siderite ore before it was shipped to the blast furnaces at Algoma Steel in Sault Ste.

sintering and by
Methods for dealing with them tend to fall into one of two categories – either make the ceramic in the desired shape, by reaction in situ, or by " forming " powders into the desired shape, and then sintering to form a solid body.
Tungsten objects are also commonly formed by sintering.
It is made by sintering together glass particles into a solid but porous body.
Alnico magnets are made by casting or sintering a combination of aluminium, nickel and cobalt with iron and small amounts of other elements added to enhance the properties of the magnet.
Clinker ( cement ) | Clinker nodules produced by sintering
Mass movements that occur during sintering consist of the reduction of total porosity by repacking, followed by material transport due to evaporation and condensation from diffusion.
Plastic materials are formed by sintering for applications that require materials of specific porosity.
It housed the measurement of diffusion coefficient by shear cell method experiment, the diffusion of liquid metals and alloys experiment, the diffusion in liquid led-tin-telluride experiment, the impurity diffusion in ionic melts experiment, the liquid phase sintering II experiment ( LIF ), and the diffusion processes in molten semiconductors experiment ( DPIMS ).
Alnico magnets are produced by casting or sintering processes.
They were manufactured by high-pressure extruding of the green compact, then sintering almost to its theoretical density.
Some pores and other structural defects associated with density variations have been shown to play a detrimental role in the sintering process by growing and thus limiting end-point densities.
) made from fine-grained ceramic nanomaterials — produced by the low temperature sintering of high purity nanoparticles and powders — can be produced at a relatively low cost.
Recently, a newer method has been devleoped by Mouzon, which relies on the methods of glass-encapsulation, combined with vacuum sintering at 1600 ° C followed by hot isostatic pressing ( HIP ) at 1500 ° C of a highly agglomerated commercial powder.
Traditional bulk mixing processes used to mix LiF sintering aid into a powder leave fairly inhomogeneous distribution of Lif that must be homogenized by extended heat treatment times at elevated temperatures.
Particularly in high-temperature petrochemical processes, catalysts are deactivated by sintering, coking, and similar processes.
The compound is made by sintering finely ground CoO and Al < sub > 2 </ sub > O < sub > 3 </ sub > ( alumina ) at 1200 ° C.

sintering and microstructural
Primary scattering centers in polycrystalline nanomaterials — made from the sintering of high purity nanoparticles and powders — include microstructural defects such as residual porosity and grain boundaries ( see Transparent materials ).

sintering and using
To allow efficient stacking of product in the furnace during sintering and prevent parts sticking together, many manufacturers separate ware using Ceramic Powder Separator Sheets.
English engineer A. G. Bloxam registered in 1906 the first patent on sintering powders using direct current in vacuum.
Advanced Ceramics are carefully engineered materials in which the chemical composition has been precisely adjusted using refined or synthesized raw powder, with a well-controlled method of forming and sintering.
Their materials were synthesized using vacuum sintering techniques.
This is further processed using pressing, sintering and forming techniques to manufacture semi-finished products and tool blanks which are then subsequently machined.
UHMWPE is processed using the following methods: compression molding, ram extrusion, gel spinning, and sintering.
To allow efficient stacking of product in the furnace during sintering and prevent parts sticking together, many manufacturers separate ware using ceramic powder separator sheets.

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