Titanium Definition and 105 Threads

Titanium is a chemical element with the symbol Ti and atomic number 22. Its atomic weight is 47.867 measured in daltons. It is a lustrous transition metal with a silver color, low density, and high strength. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine.
Titanium was discovered in Cornwall, Great Britain, by William Gregor in 1791 and was named by Martin Heinrich Klaproth after the Titans of Greek mythology. The element occurs within a number of mineral deposits, principally rutile and ilmenite, which are widely distributed in the Earth's crust and lithosphere; it is found in almost all living things, as well as bodies of water, rocks, and soils. The metal is extracted from its principal mineral ores by the Kroll and Hunter processes. The most common compound, titanium dioxide, is a popular photocatalyst and is used in the manufacture of white pigments. Other compounds include titanium tetrachloride (TiCl4), a component of smoke screens and catalysts; and titanium trichloride (TiCl3), which is used as a catalyst in the production of polypropylene.Titanium can be alloyed with iron, aluminium, vanadium, and molybdenum, among other elements, to produce strong, lightweight alloys for aerospace (jet engines, missiles, and spacecraft), military, industrial processes (chemicals and petrochemicals, desalination plants, pulp, and paper), automotive, agriculture (farming), medical prostheses, orthopedic implants, dental and endodontic instruments and files, dental implants, sporting goods, jewelry, mobile phones, and other applications.The two most useful properties of the metal are corrosion resistance and strength-to-density ratio, the highest of any metallic element. In its unalloyed condition, titanium is as strong as some steels, but less dense. There are two allotropic forms and five naturally occurring isotopes of this element, 46Ti through 50Ti, with 48Ti being the most abundant (73.8%). Although titanium and zirconium have the same number of valence electrons and are in the same group in the periodic table, they differ in many chemical and physical properties.

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  1. elisua

    Screws versus pins

    What is stronger and better for continuous movement? Screws or pins for a mechanical component made of titanium Ti-6Al-4V
  2. TikiTyler

    Question about strengths of Aluminum/Titanium Tubing for a White Cane

    I have a friend who was in a car accident causing full and permanent blindness. I've been looking to help him solve some of the issues he is running into. One of them is that he is tall, about 6'2" and the optimal length of a White Cane for moving quickly is 4 inches shorter than your height...
  3. Ozen

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    Industry standard right now is a copper alloy (usually an aluminum bronze) inner liner to promote heat transfer to the coolant channels and the walls of the channels and outer liner are usually made of an INCONEL alloy, usually either 625 or 718. But INCONEL is VERY expensive and heavy. The...
  4. P

    Titanium Oxide? and how to melt it

    I have about 40kg Titanium oxide. At least that is what I was told it is. There is a stretch of beach that is covered several cm with this black material. I would like to melt it and make... something with it. Any ideas how I can melt it at home, as this seems the first step and much more...
  5. I

    Chemistry Melting and boiling points of titanium tetrahalides

    Table boiling point (°C) melting point (°C) TiF4 284 N/A TiCl4 -24 136.5 TiBr4 38 233.5 TiI4 155 377 The solution says that TiF4 is an ionic compound, while TiCl4, TiBr4, and TiI4 are covalent compounds. How would I determine this from the problem without prior...
  6. Fig Neutron

    Open Titanium Case w/ Steel Pins: Advice Needed

    Hello everyone, I am working with a writer on a book that is bordering on science fiction but set in modern day Earth. Here is the issue. There is a titanium case with high-carbon steel pins in the hinges. (Think of a sophisticated military weapons style of container.) The characters in the...
  7. VictorMedvil

    Synthesis of Titanium Oxide Nanoparticles Coated in Graphene Oxide

    I wanted to know the finer details of synthesis of Titanium Oxide Nano-particles coated in Graphene Oxide, what exactly does creation of these nano-particles entail?
  8. M

    Titanium Nickel Alloy: Strength & Durability

    Also how bullet proof is it? I know it is a titanium nickel alloy so I’m guessing it may be strong with the titanium in it.
  9. S

    Hard chrome electroplating titanium

    Hello. I want to coat titanium metal, more preciselly grade 5 alloy with thick titanium coating. Can coating be done using electroplating method with chrome salt? I guess titanium surface will have to be somehow well prepared, removed from oxides so that chrome won't just peel off from titanium.
  10. WhiteWolf98

    Calculating Dimensions of Titanium Disk Under Load

    Homework Statement A titanium disk (with ##E=107 ~GPa##, Poisson's ratio, ##v=0.34##) precisely ##l_0=8~mm## thick by ##d_0=30~mm## diameter is used as a cover plate in a mechanical loading device. If a ##P=20~kN## load is applied to the disk, calculate the resulting dimensions, ##l_{01}## and...
  11. S

    A Adhesion mechanism between titanium and gold?

    Hi all, I sputtered titanium (10 nm) - gold (~ 100 nm) films at room temperature on oxidized silicon substrates. The titanium acts as an adhesion promoter between the SiO2 and the gold film. My Question: What is the adhesion mechanism between the titanium and gold film at room temperature...
  12. A

    TiO2 Dispersion in Water: Challenges and Solutions

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  13. Metals

    Can I Easily Buy a Titanium Plate Instead of Melting It?

    Titanium's melting point is between 1,600 and 1,700 degrees Celsius. What sort of equipment would I require to melt it? Is there something I can buy and install in my own little area that could melt titanium? Would I be able to power it or can this only be pulled off in a factory? Thanks.
  14. R

    Titanium metalworking technique options

    What are the preferred, low-cost options for cutting & joining Titanium? I'll explain my use case: There's a fabricator with long experience working with Carbon Steel & Stainless Steel but now we want to assign him a Heat Exchanger project where the tubesheet & tubes must be Titanium. He has...
  15. R

    Joining Titanium tubes to teflon tubesheet.

    What would be the possible options to join Titanium Heat Exchanger tubes to a PTFE / Teflon tubesheet? These are 38 mm tubes, 2 mm thick. 6 m total length. Seamless tubes. Is this a reasonable design decision? Full titanium tubesheet would be excessively expensive & isn't needed since only...
  16. S

    Titanium Dioxide(TiO2) vs Tin Oxide(Sn3O4)

    I'm currently looking for an efficient water splitting water catalyst for my Chemistry project. Titanium Dioxide is the popular one, as it's cheap and abundant. However, TiO2 is only most efficient when shined by UV light, not visible light ---> Which accounts for more than half of solar...
  17. A

    Behavioural characteristics of Titanium & Graphite

    Hi all, Does anybody have any experience with titanium and graphite in terms of friction and wear over time in a relatively high temperature environment? I realize that galvanic corrosion shouldn't be too much of an issue, but I was wondering from a sort of tribological point of view. Hope this...
  18. K

    What is the energy gap of Titanium Nitride (TiN) and is it indirect or direct?

    Hello all, Does anyone knows what is the exact energy gap of Titanium Nitride (TiN) film? Is it indirect band gap or direct band gap? From literatures, I've found that the band gap for TiN is around 3.35-3.45eV. . May someone could suggest the specific band gap for TiN? Thanks.
  19. Digitalism

    Calculators Definite Double Integrals 2 variables TI-89 Titanium

    Hello I am trying to solve this integral 25-9x^2-25y^2/9 dydx integrating from 0 to sqrt(9-9x^2/25) and the limits of the second integration are 0 to 5. I can find tutorials on how to find the definite double integral of a single variable, but not for two variables. Any clues? edit: so far...
  20. P

    Calculators Solving Text Entry Issue on Ti-89 Titanium

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  21. K

    Calculators Unexpected Result on TI-89 Titanium for Equation with Negative Exponents

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  22. A

    Determine the weight of a titanium sphere

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  23. E

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  24. E

    Help with Connecting TI89 Titanium to Computer via Data Cable

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  25. E

    How to Insert an Image in TI89 Titanium?

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  26. F

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  27. L

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  28. N

    Calculators Plotting modulus functions in TI-89 Titanium

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  29. E

    Calculators Setting changed on my Ti-89 Titanium

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  30. N

    Calculators Something wrong with my TI-89 Titanium

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  31. J

    Calculators Finding sequences on the TI-89 Titanium Calculator?

    Can someone guide me toward using my TI-89 Titanium calculator for sequences? I would like to be able to PUT IN a sequence of numbers and have it GIVE ME the formula. Not vice versa please. Thanks.
  32. B

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  33. S

    What causes variations in microstructure of titanium?

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  34. Borg

    Gold and Titanium - can they react?

    A few weeks ago, I got a titanium crown next to a gold crown. Now I'm getting weird reactions in my mouth. I emailed my dentist and will consult with him of course (PF rules and all). I'm not trying to get advice on what to do but I am wondering if it's possible from a periodic table view...
  35. C

    Calculators How can I simplify this logarithmic equation on a TI89 titanium?

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  36. B

    Designing Titanium Carbon Uprights for racecar

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  37. B

    Calculators Why Is My TI-89 Titanium Giving Unexpected Results for Functions?

    Hello, I am new to the TI-Titanium and have run into a few rather simple obstacles that are keeping me from answering physics questions in the correct way. First off, by typing: \sqrt(5) the answer comes out to: =\sqrt(5) as opposed to 2.2360... (I believe this is a setting/mode issue)...
  38. L

    Purify Argon gas by feeding it through heated titanium chips

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  39. S

    Ti89 Titanium too few arguments

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  40. A

    Calculators TI-89 Titanium Help (graphing quadratic functions)

    Is there a way to input values within a certain range into my calculator? For example, if I come across something like this: "Draw a curve of y=2x between the values x=+3 and x=-3. From the curve write down the following values: etc, etc, etc" How can I make it graphic w/in a certain range?
  41. B

    Calculators Can I Transfer Titanium OS to My Regular TI-89 and Use FlashApps?

    Hi, I was trying to solve inequalities on my regular TI-89 today and discovered I couldn't! I did solve((x+6)(x-2)>8,x) and pressed enter. Instead of the answer it just spit me back the question. I tried on 2 different TI-89 Titaniums and it worked fine. I called TI tech support and they...
  42. H

    How Can I Recreate the Rainbow Effect of Titanium Quartz?

    Hi, I am wondering if anyone can help me with a strange request... I am looking to find out if there is any way with the help of an expert I can recreate the same or a similar effect of the rainbow/iridescent effect that is found on titanium rainbow quartz crystals? This could either be on...
  43. J

    Calculators Why is my TI-89 Titanium not factoring equations correctly?

    Hi, when try factor(2x^2+17xy+y^2) the result is the same equation, the same result with quadratic polynomials doesn't give a facotr answer. Thanks
  44. J

    Calculators How can I transfer programs from ticalc.org to my TI-89 Titanium?

    I recently bought a TI-89 Titanium and I want to put some of the programs on ticalc.org onto it. I downloaded the program and dragged it into the TI connect program and it transferred but didn't show up on my apps list. I tried it with other programs to and got the same result what am I doing wrong?
  45. R

    Calculators TI-89 Titanium - Probability - Expected Value

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  46. R

    Calculators HP50g or TI-89 Titanium: Which Calculator is Best for Calculus II?

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  47. H

    Titanium vs steel hammer heads

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  48. J

    Calculators TI-89 Titanium date log GPA and Pass or Fail in jeopardy?

    Alrighty, I know the TI-89 keeps up with date and time. It seems logical that it would somewhere inside the chips and silicon it makes a log of the date that data was inputted...rightttt. I made an idiot out of myself and didn't double check my scan-tron after an exam, my professor jokingly said...
  49. J

    Calculators TI-89 Titanium batteries Problem

    I use TI-89 Titanium normally. It was not even a month since I changed my batteries. One day I pressed on but did not turn on. I tried out other batteries and found out that batteries were not the matter of problem. What's wrong? What should I do?
  50. S

    Does Titanium Dioxide React with Strong Acids and Oxidizers?

    I've thought of titanium dioxide as a very inert material--until yesterday when I was reading its MSDS and found out it shouldn't be combined with strong acids or oxidizers. Why? Is this at room temperature or several hundred °C? Not combining it with reactive metals makes sense to me--it's an...
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