Talk:Hydrogen embrittlement

Merger
I whole-heartedly support merging Hydrogen grooving with this article, as they are similar in process.--Vox Causa 22:09, 27 September 2006 (UTC)

pRoPeR cApItAlIzAtIoN?
Is there any objection to moving this article from "Hydrogen embrittlement" to Hydrogen Embrittlement", to properly capitalize? If my suggestion is improperly capitalized for wikipedia articles, then by all means, let me know so that i may change my ways. But I always thought that aritcles were capitalized.--Vox Causa 22:09, 27 September 2006 (UTC)

Not a name keep it as it is.Mion 10:15, 28 September 2006 (UTC)

Grooving and Embrittlement - Keep it separate
Hydrogen embrittlement is a reduction in tensile strength caused by the introduction of molecular hydrogen into a denser matrix such as high strength steel. It has nothing to do with corrosion and is reversible (if baked out in time). These two processes are different animals and should remain listed separate.


 * Too late!? They did a redirect without actually merging the information&mdash; so I did a copy/pasta as a belated resolution&mdash; let’s see who cares.    WurmWoode  T   04:42, 26 October 2019 (UTC)
 * I have moved the content to the Corrosion page since it is a form or corrsion and not embrittlement and updated the redirect to point to that. NeedsGlasses (talk) —Preceding undated comment added 13:16, 26 October 2019 (UTC)

Another Merger
What about placing this article within the "Hydrogen Damage" article? 63.169.117.7 (talk) 21:35, 4 March 2008 (UTC)

Helium
Can helium also embrittle metals? Stonemason89 (talk) 23:49, 24 July 2009 (UTC)

Helium is an noble gas and consequently doesn't react with anything. So no embrittlement from helium can be expected. —Preceding unsigned comment added by 69.157.3.239 (talk) 22:01, 3 August 2009 (UTC)


 * Helium and Noble gases do not diffuse through metals per se, or interact chemically. Helium diffuses very rapidly through regular glass (a liquid) especially at slightly elevated temperature (an issue with older vacuum tube technology). Presumably disordered metals or metal glasses would behave similarly. Shjacks45 (talk) 05:29, 26 August 2011 (UTC)

Related phenomena
The first two phenomena in the "Related phenomena" section seem to be the same thing: high-temperature hydrogen diffuses into the metal and reacts with carbon (or carbide) to decarburise the metal, causing internal pressure (as methane gas), increasing the likelihood of failure. Is there an important difference between the two processes that I'm missing? If not, one should probably be deleted, or the information in the two of them merged, so that there's less repetition of the same information. E ric W es B rown (Talk) 23:02, 3 October 2010 (UTC)


 * They are the same thing. I believe the repetition came from a merge. Feel free to copyedit the section. Wizard191 (talk) 13:00, 4 October 2010 (UTC)
 * Will do. Thanks. E ric W es B rown  (Talk) 00:12, 7 October 2010 (UTC)

Incomplete/accidentally deleted sentence
This part of the "Counteractions" section appears to have been accidentally damaged during editing.

"This per SAE AMS 2759/9 Section 3.3.3.1 which calls out the correct procedure for eliminating entrapped hydrogen. ting the metal is applied to allow the hydrogen to diffuse out before it can cause any damage." —Preceding unsigned comment added by 220.157.160.183 (talk) 08:27, 9 November 2010 (UTC)


 * Fixed (vandalism) - thanks :) Stephenb (Talk) 08:29, 9 November 2010 (UTC)

Perhaps not
I worked as a Industrial Test Lab for awhile and it is not the Hydrogen but the combining of Oxygen from intergranular regions that combines to make internal water. Plating of "oxygen free Copper" from highly acidic solutions (pH=-1) still contains some oxygen in the Copper. Plating from highly alkaline solution (very low hydrogen availability; pH=11) at high overcurrent forces Alkali metal ions into the plated metal, however the resulting oxide is solid. Ammonium ion migrates into plated metal similar to Potassium, however is gaseous and will react similar to hydrogen. Smaller ions like Lithium will diffuse further into the metal. The Group VIII metals all have an affinity for Hydrogen and thin foils of platinides and ferrous metals will pass Hydrogen gas (splitting Hydrogen molecules into atoms takes 104 KCal/mole; and diffusion of H2 through Ni and Pd is atomic.) Compare diffusion of Hydrogen (using Helium as a base) through these metals compared to others (use metals nonreactive to molecular hydrogen like Mercury or Antimony or Tin). Shjacks45 (talk) 05:58, 26 August 2011 (UTC)

Contradictory Opening Paragraph
"Though hydrogen atoms embrittle a variety of substances, including steel, *aluminium* (at high temperatures only[3]), and titanium,[4] hydrogen embrittlement of high-strength steel is of the most importance."

Aluminium contradictory.

"In tensile tests carried out on several structural metals under high-pressure molecular hydrogen environment, it has been shown that austenitic stainless steels, *aluminium* (including alloys), copper (including alloys, e.g. beryllium copper) are not susceptible to hydrogen embrittlement along with a few other metals"

A quick internet search for hydrogen embrittlement of aluminium alloys produces many articles on it. Can someone with some expert knowledge on this re-write the first paragraph? 89.197.7.162 (talk) 14:39, 20 April 2016 (UTC)

Temperature
The article carefully navigates around giving the facts. "Because the solubility of hydrogen increases at higher temperatures, raising the temperature can increase the diffusion of hydrogen. When assisted by a concentration gradient where there is significantly more hydrogen outside the metal than inside, hydrogen diffusion can occur even at lower temperatures." High? Lower?!? --129.13.72.198 (talk) 16:25, 17 September 2016 (UTC)

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Hydrogen from where?
This article is very vague about where the hydrogen comes from. How about a little better explanation? Hermanoere (talk) 22:14, 18 December 2017 (UTC)

Link to hydride page?
I feel that it could be helpful to have "hydride-forming" at the top of the page link to the wiki page about hydrides (currently titled "Hydride") Please let me know if I'm doing anything wrong, I'm new here and hope to improve. (Duckduckgoop (talk) 19:44, 27 May 2019 (UTC))

Mortlet 1858 reference
I failed to locate an online copy of the journal article from which the image showing the effect of a high temperature bake duration on the Stress (mechanics) versus time to fracture of several embrittled steel samples. Resources I searched were the AIChE eLibrary, Google Books, Google Scholar, and Worldcat. The best I could find were citations that clarified the name of the author and the journal as well as confirming the volume number in the article's reference source code. You might try your luck finding a physical or microfilm copy at a library near you with WorldCat (OCLC: [18157241]). You'd be looking for an article named "A new concept of hydrogen embrittlement in steels" by a "J. G. Mortlet" in volume 189 of the Journal of the Iron and Steel Institute published in 1958, pages 37-34. Balta katei  19:18, 26 July 2019 (UTC)

Histroy section
1874 mention of change of iron by acids reported by William H. Johnson and Lord Kelvin, see On some remarkable changes produced in iron and steel by the action of hydrogen and acids .. FuzzyMagma (talk) 09:11, 7 May 2024 (UTC)