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Figure 1. An UHTC strake composed of three different sections with different UHTC compositions. [4]Beginning in the early 1960s, demand for high-temperature materials by the nascent aerospace industry prompted the United States Air Force Materials Laboratory to begin funding the development of a new class of materials that could withstand the environment of proposed hypersonic vehicles such as ...
The manufacturing and machining of UHTCMCs present new challenges due to the unique properties of these advanced materials. Traditional manufacturing techniques such as casting and molding may not be suitable for UHTCMCs, requiring the development of specific methods like chemical vapor infiltration (CVI), [40] polymer infiltration and pyrolysis (PIP), [41] reactive melt infiltration (RMI ...
These refractories are also useful for applications in high temperature construction materials. Aluminosilicate refractories mainly consist of alumina (Al 2 O 3) and silica (SiO 2). Aluminosilicate refractories can be semiacidic, fireclay composite, or high alumina content composite. [clarification needed] [15]
The strength and high-temperature stability of refractory metals make them suitable for hot metalworking applications and for vacuum furnace technology. Many special applications exploit these properties: for example, tungsten lamp filaments operate at temperatures up to 3073 K, and molybdenum furnace windings withstand 2273 K.
Uranium dioxide, like U 3 O 8, is a ceramic material capable of withstanding high temperatures (about 2300 °C, in comparison with at most 200 °C for silicon or GaAs), making it suitable for high-temperature applications like thermophotovoltaic devices.
In manufacturing processes by polycondensation a high purity of the starting materials is important. In addition, the stereochemistry plays a role in achieving the desired properties in general. The development of new high-performance plastics is therefore closely linked to the development and economic production of the constituent monomers. [2]