Recent research indicates that a synthetic analogue of mullite can be an effective replacement for platinum in reducing the amount of pollution generated by diesel engines.
12.
Typically the gasket material used is pyrophyllite, and the mullite will be machined into a sphere which sits in pyrophyllite seats , forming a cube.
13.
The temperature at which the liquidous phases crystallize in a sequence : mullite + tridymite, followed by sekaninaite and finally fayalite + clinoferrosilite ( Grapes, 2010 ).
14.
If the silica and alumina ratio with low basic materials such as sodium and calcium is adjusted, the needle shape mullite forms at about 1400 �C and the needles will interlock.
15.
There is also substantial interest in dispersion of hard, non-oxide phases such as SiC, TiB, TiC, boron, carbon and especially oxide matrices like alumina and mullite.
16.
If the needle shape mullite can form in a ceramic body during sintering, it has an effect on both the mechanical and physical properties by increasing the mechanical strength and thermal shock resistance.
17.
By the late Medieval period steel production had moved from India to modern-day Uzbekistan where new materials were being used in the production of steel crucibles, for example Mullite crucibles were introduced.
18.
It was not until 1968, when the large-scale mining of kaolin, bauxitic kaolin, and bauxite was begun by Mulcoa, Mullite Company of America, that the town was dramatically altered.
19.
Carbon ( C ), special silicon carbide ( SiC ), alumina ( Al 2 O 3 ) and mullite ( Al 2 O 3 SiO 2 ) fibres are most commonly used for CMCs.
20.
Professor Pask's work with mullite, cq an aluminum-silica compound commonly used in engines and turbines and to line the furnaces used to make steel and other metals, remains a benchmark, colleagues said.
