Fortran~enwiki

Hey i have aquestion on some other dotcom it said mohs hardness for rhodium was 3.0, is that true because i am doing a project and have to know the answer.please help. thanks! —Preceding unsigned comment added by 75.36.41.154 (talk)

Sorry, been away too long. I suppose you might find some rhodium as soft as 3, one datum I found said 3.5. But is the rhodium pure? What else is present? It isn't unusual for many of the platinum group to occur together. The platinum group can also alloy with iron. What is the grain size? Has the material been worked? Fortran (talk) 01:24, 6 April 2009 (UTC)Reply

The expected range of hardness (Vickers scale) for annealed rhodium is 13.26 to 100. A tabulated minimum hardness range for some kind of anonymous rhodium was given as 100-102, and a tabulated maximum was given as 120-132.6. I would guess these minimum and maximum values would correspond to commercially pure rhodium. A Vickers hardness of 100 is consistent with a Mohs hardness of about 3, whereas a Vickers hardness of 132.6 would be consistent with a Mohs hardness of about 3.5. A vickers hardness of 13.26 is really soft, and probably is around a Mohs hardness of 1 (or less). Commercially, rhodium is alloyed with nickel and platinum (among others). As one might expect to find either nickel or platinum in geological specimens (which is where Mohs hardness numbers are most often used), those are the only alloys I looked up. Both nickel and platinum are effective in getting rhodium to work harden. You might see hardness numbers greater than 200 Vickers (and probably less than 300), it would depend on the alloying and the work process. Johnson Matthey produces precious metals for structural use that have a dispersion of zirconium oxide in them (for example, ZGS Platinum). These materials maintain a more stable grain size in service and have lower creep rates. Fortran (talk) 14:00, 7 April 2009 (UTC)Reply

Your account will be renamed

Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Fortran. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Fortran~enwiki that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name. If you think you might own all of the accounts with this name and this message is in error, please visit Special:MergeAccount to check and attach all of your accounts to prevent them from being renamed.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours,
Keegan Peterzell
Community Liaison, Wikimedia Foundation

23:58, 19 March 2015 (UTC)

Renamed

This account has been renamed as part of single-user login finalisation. If you own this account you can log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: Special:GlobalRenameRequest. -- Keegan (WMF) (talk)

12:59, 22 April 2015 (UTC)