Foamed Metal Ceramic

Compared to traditional catalytic converters that use cordierite ceramic as substrate metal foam substrate offers better heat transfer and exhibits excellent mass transport properties high turbulence and may reduce the quantity of platinum catalyst required.

Foamed metal ceramic.

Metal powders can also be foamed by compressing powders to a precursor material then filling the metal compact with gas followed by heating the precursor material to expand the metal due to the entrapped gas. These materials can be fabricated as high as 94 to 96 air by volume with temperature resistances as high as 1700 c. Last year we saw researchers adapt these lightweight materials to stop various forms of. Cross section images of the mechanically crushed sample for the sintered porous bulk specimens are shown in figure 4 2 clearly indicating the sintering neck formation between the powder particles of zr 55 cu 30 al 10 ni 5 as marked by arrows all the pores are homogeneously distributed in the whole sintered porous bulk and no obvious difference in the pore shape appears between specimens.

Refractory foams are a new class of open cell low density materials that ultramet has developed to produce lightweight porous structures for aerospace and industrial applications. Ceramic foams are hardened ceramics with pockets of air or another gas trapped in pores throughout the body of the material. Based on that mullite foamed ceramics were expected to be used as thermal insulating linings for cement kilns. Because many ceramics are already oxides or other inert compounds there is little danger of oxidation or reduction of the material.

Foam ceramic filtration is a new technology which can remove nonmetallic inclusions from alloy and purify metal solution and the application of silicon carbide foam ceramics in this field has greatly improved the qualified rate and mechanical properties of metals. Carbon ceramic and metal. Nevertheless after the long term service mullite foamed ceramics would be destroyed due to a combination of external load and alkali vapor corrosion. Refractory metal coatings freestanding structures through chemical vapor deposition ultramet fabricates refractory metal coatings and freestanding structures of tungsten rhenium tantalum molybdenum and niobium.