Thermal stability - Revision history

Apm: added links to other stabilities intro

2021-07-25T10:41:09Z

added links to other stabilities intro

← Older revision		Revision as of 12:41, 25 July 2021
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	The strength of constraint for thermal stability is typically between <br>		The strength of constraint for thermal stability is typically between <br>
	* the stronger requirement of chemical stability and ...		* the stronger requirement of [[chemical stability]] and ...
	* the weaker requirement of mechanical stability.		* the weaker requirement of [[mechanical stability]].

	== Thermal stability issues are totally not a show stopper ==		== Thermal stability issues are totally not a show stopper ==

Apm at 10:40, 25 July 2021

2021-07-25T10:40:27Z

← Older revision		Revision as of 12:40, 25 July 2021
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	The strength of constraint for thermal stability is typically between <br>		The strength of constraint for thermal stability is typically between <br>
	the stronger requirement of chemical stability and the weaker requirement of mechanical stability.		* the stronger requirement of chemical stability and ...
			* the weaker requirement of mechanical stability.

	== Thermal stability issues are totally not a show stopper ==		== Thermal stability issues are totally not a show stopper ==

Apm: added basic text

2021-07-25T10:39:56Z

added basic text

← Older revision		Revision as of 12:39, 25 July 2021
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	{{stub}}		{{stub}}

			The strength of constraint for thermal stability is typically between <br>
			the stronger requirement of chemical stability and the weaker requirement of mechanical stability.

			== Thermal stability issues are totally not a show stopper ==

			For temperatures at and around room temperature there are many attractive materials (and structures out of these materials) <br>
			that [[for all practical purposes]] do not experience any undesired diffusion atom hopping events.

			Even for significantly higher temperatures (like e.g. what one encounters on Venus ~500°C) <br>
			there are plenty of materials ([[Refractory compounds]] - melting points >2500°C - including cheap [[Moissanite]])
			that still experience insignificant diffusion.

			== What to look out for ==

			Most critical for thermally induced undesired diffusion hop events are:
			* [[Surface diffusion]] (and [[Surface reconstruction]]) – especially crystal edges, steps, and "steps of steps"
			Locatins with high local mechanical tensions like e.g.
			* on grain boundaries from production via [[thermodynamic means]]
			* in step or screw dislocations

			[[Piezochemical mechanosynthesis]] does neither produce grain boundaries nor produce step or screw dislocations <br>
			with high tensions inside them. Well, unless it's done with very deliberate intention. <br>
			Edges and steps can be tailored to the thermal demands. <br>

			'''Some extreme example application cases are:'''
			* Internals of [[rocket engines]]
			* [[nuclear fusion\|Fusion]] power plants
			* Mining robotics for [[Venus]]
			* ...

	== Related ==		== Related ==

Apm: improvements

2021-07-25T10:16:05Z

improvements

← Older revision		Revision as of 12:16, 25 July 2021
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	* [[Refractory compounds]]		* [[Refractory compounds]]
	* [[Diffusion transport]]		* [[Diffusion transport]]
			* [[Surface reconstruction]]
	* [[Thermal damage]]		* [[Thermal damage]]
	* [[Thermal motion]] – [[Brownian motion]]		* [[Thermal motion]] – [[Brownian motion]]
	* [[~~Thermodynamics~~]]		----
			* [[Thermal management in gem-gum factories]]
	* [[Thermodynamic means]]		* [[Thermodynamic means]]
	----		----
	* [[~~Thermal management in gem-gum factories~~]]		[[Common misconceptions about atomically precise manufacturing]] & [[Thermodynamics]]: <br>
			* concerns about thermal motion preventing practical [[piezochemical mechanosynthesis]] or even ...<br>
			* concerns about thermal motion preventing sufficient stability of the synthesized structures <br>
			Neither of these two concerns hold on closer inspection.

Apm: just a list of links for now

2021-07-25T10:07:47Z

just a list of links for now

New page

{{stub}}

== Related ==

'''[[The three stabilities]]:'''
* [[Chemical stability]]
* [[Thermal stability]] (this page here)
* [[Mechanical stability]]
----
* [[Refractory compounds]]
* [[Diffusion transport]]
* [[Thermal damage]]
* [[Thermal motion]] – [[Brownian motion]]
* [[Thermodynamics]]
* [[Thermodynamic means]]
----
* [[Thermal management in gem-gum factories]]