Talk:Crystallite

Wiki Education Foundation-supported course assignment
This article was the subject of a Wiki Education Foundation-supported course assignment, between 25 January 2021 and 30 April 2021. Further details are available on the course page. Student editor(s): S0ulffle.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 18:45, 16 January 2022 (UTC)

Tribology
Will grain size affect the roughness of surface?


 * Not usually, unless some chemical or mechanical effect affects the grain boundaries differently than the bulk. Plating or dissolution tend to produce facets, which are larger for larger crystals, while intergranular fracture (due to bad heat treatment) exposes internal facets.  Also, some wear processes are affected indirectly by grain size.  --Joel 21:21, 6 September 2005 (UTC)

Proposed merge from grains
The grains article is start on the same topic as this article. It seems like a no-brainer to merge the two. --Wizard191 (talk) 02:29, 7 October 2008 (UTC)


 * Lest there be confusion, be aware that (whatever the case may have been a decade ago) Grain is now an article on the many plant species grown for their seeds); presumably its Dab apparatus reflects the silliness of Dab'n of plurals  of nouns that are not proper names. --Jerzy•t 01:14, 22 November 2018 (UTC)<!--

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Seemingly conflicting information re. grains vs. crystallites

 * Metallurgists often refer to crystallites as "grains".

and then later
 * the grains are larger than crystallites and are formed by several of them. --Ott0 (talk) 13:36, 12 August 2010 (UTC)


 * I removed the second statement, because I couldn't find any reliable sources that stated the two are different. I did find lots of references that said they are the same though. Wizard191 (talk) 17:28, 12 August 2010 (UTC)

I see the same problem elsewhere: Crystal size (or grain size) is usually measured from X-ray diffraction patterns and grain size by other experimental techniques like transmission electron microscopy. So what is the difference between "crystal size" and "grain size" that leads to them being measured differently? Is the "or" in "crystal size (or grain size)" really an "and" or is it the kind of pedagogical appositive "or" that serves as a definition of the second term? Not myself knowing the difference between a crystal and a grain (despite having given a lecture on "grains" 2 days ago at a conference), I hesitate to correct this from its current muddiness into crystal-clear wrongness. 129.132.209.124 (talk) 12:06, 12 July 2014 (UTC)

a particle can be an aglomerate of several grains, and grains can be polycristalline and so formed by several crystallite. read it on http://www.researchgate.net/post/What_is_the_difference_between_crystallite_size_grain_size_and_particle_size for instance (the second answer is way better than the top one) That's strange such a basic and common misunderstanding is still on Wikipedia! 195.115.170.59 (talk) 13:48, 25 August 2014 (UTC)

Merge from Polycrystal
Polycrystal should be merged into Crystallite because 'polycrystal' is defined from 'crystallite' but not the other way around. Blackbombchu (talk) 00:29, 26 October 2014 (UTC)
 * I merged the two articles. Copy-editing still needed. Also, lead should compare to amorphous and single-crystalline structures. -- Rfassbind (talk) 16:03, 27 October 2014 (UTC)

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New Edits/Restructuring
Hello! I am an undergraduate student who wants to make edits to this article to improve it for an editing course. I intend to make edits in my sandbox before implementing them. I will shorten the lead and put much of the information in it under new subheadings, as I believe that the lead in its current state is too crowded and much of the information in it would better serve elsewhere. I also intend to restructure the article somewhat; the "Details" section has a lot of information crammed under it and I intend to add some more headings which will hopefully make the article easier to read. I also intend to edit the Grain Boundary section. Comments and feedback are appreciated. Thanks! ~ S0ulffle

which of the following may have crystallite
a.amourphous solid b.crystalline solid c.liquid crystal d.all of the above Jalalulhaq (talk) 12:18, 4 October 2022 (UTC)

Mcq
pair of compounds which are isomorphic in nature is A,NaCl and KNO3. B,MgO and ZnO. C,NaNO3 and CdS. D,NaF and CaCO3​ Jalalulhaq (talk) 13:11, 4 October 2022 (UTC)