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Topic: Rapid thermal anneal

	Encyclopedia :: encyclopedia : Thermal conductivity (Site not responding. Last check: 2007-10-30)
		Thermal conductivity is the quantity of heat, Q, transmitted through a thickness L, in a direction normal to a surface of area A, due to a temperature gradient ΔT, under steady state conditions and when the heat transfer is dependent only on the temperature gradient.
		Since diamond has such a high thermal conductivity, natural blue diamond much higher still, one may test gems to determine if they are genuine diamonds using a thermal conductance tester, one of the instruments of gemology.
		A third term, thermal transmittance, incoporates the thermal conductance of a structure along with heat transfer due to convection and radiation.
	www.hallencyclopedia.com /Thermal_conductivity (601 words)

	Annealing (Site not responding. Last check: 2007-10-30)
		Annealing is a softening process where the steel is heated to the austenitic or austenite-cementitite temperatures and then slowly cooled.
		Anneal may refer to: Annealing (metallurgy), a heat treatment wherein the microstructure of a material is altered, causing changes in its properties such as strength and hardness.
		Annealing, in metallurgy and materials science, is a heat treatment wherein the microstructure of a material is altered, causing changes in its properties such as strength and hardness.
	www.sagooptimization.com /annealing (834 words)

	CRA Welding Selection of Welding Filler Material (Site not responding. Last check: 2007-10-30)
		It is necessary to condition all thermal cut edges to bright, shiny metal prior to welding.
		Postweld heat treatments, either full solution anneal heat treatment, 1900 to 2150°F (1038 to 1177°C) depending on alloy, or stress relief heat treatment, typically 1100 to 1200°F (593 to 649°C), are normally not required.
		This condition is controlled by rapid heating during annealing and shot peening high residual stress areas.
	www.hastelloy.com /CRAfab/CRAweldfill.htm (1874 words)

	Glass is a solid(Gerald L. Hurst, Richard A. Schumacher)
		It would be possible in manufacture to anneal only one surface, which might subject the glass to incredibly high strain and cause it to flex like some bimetallic strip.
		Let me also mention that you are now in a position to see the thermal change by measuring the difference in the heat of solution of the two phases.
		Are you quite certain that random thermal fluctuations may not hit a quantum barrier lower than the activation energy, i.e.
	www.yarchive.net /chem/glass.html (11027 words)

	[No title]
		If you cool (quench) the sample suddenly by immersing it in oil or water, the carbon atoms are trapped, and the result is a very hard, brittle steel.
		Since rapid cooling may warp a part, this could make a difference in the final product.
		Other metals, like brass, can be hardened by "working" the metal, by bending, hammering, peening, etc. Brass is usually annealed with a quench, which is the opposite of steel.
	w3.uwyo.edu /~metal/faq.txt (10317 words)

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