It occurs in nature as a form of the very rare mineral khamrabaevite. It was discovered in 1984 on Mount Arashan in the Chatkal District, USSR (modern Kyrgyzstan), near the Uzbek border. The mineral was named after Ibragim Khamrabaevich Khamrabaev, director of Geology and Geophysics of Tashkent, Uzbekistan. As found in nature its crystals range in size from 0.1 to 0.3mm.
Tool bits without tungsten content can be made of titanium carbide in nickel-cobalt matrix cermet, enhancing the cutting speed, precision, and smoothness of the workpiece.
The resistance to wear, corrosion, and oxidation of tungsten carbide-cobalt material can be increased by adding 6-30% of titanium carbide to tungsten carbide. This forms a solid solution that is more brittle and susceptible to breakage.
Titanium carbide can be etched with reactive-ion etching.
What is titanium carbide made from
A hard crystalline powder of the composition TiC, titanium carbide is made by reacting titanium dioxide and carbon black at temperatures above 1800degC. It is compacted with cobalt or nickel for use in cutting tools and for heat-resistant parts.
Titanium carbide is used in the preparation of cermets, which are frequently used to machine steel materials at high cutting speed. It is also used as an abrasion-resistant surface coating on metal parts, such as tool bits and watch mechanisms. Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft.
As an additive for cutting tool materials and metal bismuth, zinc, cadmium melting bismuth, preparation of semiconductor wear-resistant film, HDD large-capacity memory device.
The most important use of titanium carbide is as an additive for cutting tool materials and metal bismuth, zinc, cadmium melting bismuth, preparation of semiconductor wear-resistant film, HDD large-capacity memory device.
Titanium carbide nanotech approach hints at hydrogen storage breakthrough
New research from China is promising to double the efficiency of hydrogen storage at a time when the low-carbon collection of the omnipresent gas is seen as a potential path to a greener energy economy.
Published in Nature Nanotechnology this week, the research investigated a method using a titanium carbide alloy just a few atoms thick as a medium, which produces a “nano pump” effect to store hydrogen. The process described is about twice as effective as comparable methods.
Hydrogen is attracting interest as a green fuel, with fuel-cell cars already on the market. Although breakthroughs are being made in the production of the gas, storage is a critical problem owing to the tiny size of the molecule, as Register readers have been quick to point out.
Work from Professor Jianglan Shui, of the School of Materials Science and Engineering, Beihang University, and his team found that the titanium carbide material (technical name Ti2CTx – a type of MXene) could support 8.8wt% (hydrogen ratio) under a “relatively safe” pressure of 60 bar.
“Compared with the known room-temperature hydrogen storage materials, Ti2CTx shows the superiority of low-pressure hydrogen storage, which is almost double of the previously reported highest storage capacity under the same pressure,” the paper said.
Meanwhile, the hydrogen release is fast and controllable, making it a “promising strategy for designing practical hydrogen storage materials.”
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