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TiN has a Vickers hardness of 1800–2100, hardness of 31 ± 4 GPa, [6] a modulus of elasticity of 550 ± 50 GPa, [6] a thermal expansion coefficient of 9.35 × 10 −6 K −1, and a superconducting transition temperature of 5.6 K. [7] [6] TiN oxidizes at 800 °C in a normal atmosphere.
As quoted in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition.CRC Press. Boca Raton, Florida, 2003; Section 4, Properties of the Elements and Inorganic Compounds; Physical Properties of the Rare Earth Metals
Another widely used method to seal through glass with low coefficient of thermal expansion is the use of strips of thin molybdenum foil. This can be done with matched coefficients of thermal expansion. Then the edges of the strip also have to be knife sharp.
A number of materials contract on heating within certain temperature ranges; this is usually called negative thermal expansion, rather than "thermal contraction".For example, the coefficient of thermal expansion of water drops to zero as it is cooled to 3.983 °C (39.169 °F) and then becomes negative below this temperature; this means that water has a maximum density at this temperature, and ...
Increased thermal vibrations produce thermal expansion characterized by the coefficient of thermal expansion (CTE) that is the gradient of the graph of dimensional change versus temperature. CTE depends upon thermal transitions such as the glass transition. CTE of the glassy state is low, while at the glass transition temperature (Tg) increased ...
Negative and positive thermal expansion hereby compensate each other to a certain amount if the temperature is changed. Tailoring the overall thermal expansion coefficient (CTE) to a certain value can be achieved by varying the volume fractions of the different materials contributing to the thermal expansion of the composite. [8] [20]
where ε m is the pre-strain, ΔL/L c and ΔL/L f are changes in length due to thermal expansion of the niobium tin conduit and strengthening fiber respectively; V c, V f, V cu, and V bz are the volume fractions of conduit, fiber, copper, and bronze; σ cu,y, and σ bz,y are the yield stresses of copper and bronze; and E c, and E f are the ...
Materials with zero or extremely low coefficient of thermal expansion. Subcategories. This category has only the following subcategory. L. Low-expansion glass (5 P)