Talk:Tungsten carbide
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[edit] Preparation
How do you make Tungsten Carbide?
- By reacting tungsten and carbon at high temperatures. I can't yet find a reference for exactly how high. Physchim62 20:50, 22 August 2005 (UTC)
- Why isn't this explained better then ????
I found this patent http://www.freepatentsonline.com/7108831.html which seems to suggest that it can be produced by high temperature reaction of tungsten oxides with a carbon dioxide/monoxide mixture. This one in particular mentions the inclusion of hydrogen in the gas mixture, but several other patents do not. I'm not sure of the exact industrial method that is most widely used. Naffer 01:27, 5 December 2006 (UTC)
- The method most commonly used in the industry is sintering followed by grinding.
Veddan 10:00, 19 March 2007 (UTC)
[edit] Neutron reflector
There was a "trivia" section here mentioning the death of Louis Slotin; I removed it, since trivia sections suck. (Except maybe for articles on episodes of television shows, where nobody cares. :-) What is worth adding to the article is that tungsten carbide has been/is used as a neutron reflector, but I have no idea how to put in any more than "tungsten carbide has been used as a neutron reflector", which is a bit lacking. If anyone has more details (besides the lame "there once was a criticality accident involving tungsten carbide"), do add. JRM · Talk 10:04, 7 July 2006 (UTC)
[edit] copy(paste)vio?
This series of additions seems to have grabbed information directly from hardmaterials.sandvik.com (like this page. --Splarka (rant) 07:06, 26 August 2006 (UTC)
- I removed the copyrighted material and warned the user with {{subst:nothanks|Tungsten carbide}}. —Keenan Pepper 14:50, 26 August 2006 (UTC)
[edit] 71.113.22.200's "Ditungsten Carbide" edits
Is this "Ditungsten Carbide" business legit? —Ben FrantzDale 05:26, 2 January 2007 (UTC)
Yes, it is. It seems very weird that a ionic compound would have an organic prefix, but the same occures with Manganese (IV) Oxide, it is more commonly known as manganese dioxide. Assume that ditungsten carbide refers to the lower oxidation state, tungsten 2+ and mono refers to the higher oxidation state 4+. Kyanite 23:56, 27 March 2007 (UTC)
[edit] In fiction ???
The "In fiction" section adds nothing to our knowledge of tungsten carbide; if they are of interest to anyone at all, it would be Monty Python fans or Halo fans, not tungsten carbide users. Tungsten carbide is probably mentioned thousands of times in fiction of various sorts, why would an encyclopedia mention any of them? How does one decide which fictional mentions are encyclopedic and which aren't? I think this section should be deleted, any other opinions? Sparohok 06:53, 4 February 2007 (UTC)
[edit] Armor-piercing ammunition?
The article seems to be stating that bulk tungsten carbide has been used to fashion AP rounds, but I wonder about this.
Tungsten carbide is very brittle. It is a dense material, with density around 15 g/cc, but not nearly as dense as tungsten or depleted uranium, which are in the 18-19 g/cc range. Pure tungsten and the "heavy metal" compositions of cemented tungsten bound with sintered nickelbronze are still very hard, but more malleable and ductile and less prone to shattering on impact with armor. As far as I am aware, "heavy metal" is in common use today in AP projectiles, but tungsten carbide is not.
Not to long ago i watched a video on youtube about the .50 BMG, one of the marines in the video refered to the M-2(?) armor peircing round as having a tungsten carbide core. just a thought.Kyanite 23:59, 27 March 2007 (UTC)
Tungsten carbide was a brittle material but that was compared to steel. Much of the armor piercing work was done by Dr. Irwin Rudy of Pacific Hardmetals in Forest Grove, OR. Use of Nickel instead of Cobalt made a much tougher part. Also the way the force is directed has a tremendous effect. I’m not sure a tornado ever forced straw through a board but I do have picture or piece of plywood forced through a tree.
Carbide is extremely strong in compression but weak in tension. —Preceding unsigned comment added by Tomwalz (talk • contribs) 18:16, 26 September 2007 (UTC)
Found a toxicological profile for tungsten made by the U.S. Department of health and human services (august 2005). It talks mainly about the use of tungsten carbide for machining but it also talks about ammunition on pages 22 and 31 I found it here: http://www.atsdr.cdc.gov/toxprofiles/tp186.pdf —Preceding unsigned comment added by 75.7.200.196 (talk) 05:38, 27 November 2007 (UTC)
[edit] trivia
In other languages tungsten-carbide is called 'vidia' from German expression "vie diamant" (like diamond) - Valdez from Hungary —Preceding unsigned comment added by 84.2.192.174 (talk) 13:40, 23 October 2007 (UTC)
[edit] Toxicity?
Jewelry pieces made primarily of tungsten carbide (and other binding metals) have been available for a while now, but the links to the material safety data on this page suggest that tungsten carbide may be toxic through skin contact. Am I misinterpreting something, or do these hazard warnings apply only to the substance when powdered?
[edit] one article - two compounds
We have two interstitial compounds known colloquially as tungsten carbide- but only one article with one chembox. It would be better if this article was split into two separate ones (for WC and W2C) with a disambiguation page for tungsten carbide. --Axiosaurus (talk) 10:42, 8 February 2008 (UTC)
[edit] jewelry
I made a boo-boo on the references, and i don't know how to fix it i was trying to get the jewelry citation to go to http://www.forevermetals.com/jewelry-tungsten-carbide-ring/ because it talks about the cobalt in Tungsten carbide jewelry. —Preceding unsigned comment added by 75.14.209.24 (talk) 03:14, 17 February 2008 (UTC)
I do not see the legitimacy of this website. They do not update their information and there are no pictures or proof a validity. Not to mention much of the text is duplicated http://www.trewtungsten.com/ should be cited for the tungsten carbide ring source for he has several patents on it. —Preceding unsigned comment added by Greg995 (talk • contribs) 01:35, 22 April 2008 (UTC)
[edit] Domestic uses cleanup
This section in particular sounds awkward due to the addition of the last paragraph which intentionally conflicts with other information. This info needs to be integrated, and preferably be properly sourced. --Jmeden2000 (talk) 18:47, 25 February 2008 (UTC)
