Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles...
47 KB (5,395 words) - 15:56, 11 September 2024
Natural hafnium (72Hf) consists of five observationally stable isotopes (176Hf, 177Hf, 178Hf, 179Hf, and 180Hf) and one very long-lived radioisotope,...
15 KB (713 words) - 03:15, 3 May 2024
Hafnium carbonitride (HfCN) is an ultra-high temperature ceramic (UHTC) mixed anion compound composed of hafnium (Hf), carbon (C) and nitrogen (N). Ab...
7 KB (498 words) - 00:41, 5 February 2024
Group 4 element (section Hafnium)
periodic table. It contains the four elements titanium (Ti), zirconium (Zr), hafnium (Hf), and rutherfordium (Rf). The group is also called the titanium group...
35 KB (4,229 words) - 23:06, 11 September 2024
Hafnium(IV) oxide is the inorganic compound with the formula HfO 2. Also known as hafnium dioxide or hafnia, this colourless solid is one of the most...
9 KB (843 words) - 00:44, 3 June 2024
Rutherfordium (redirect from Eka-Hafnium)
experiments have confirmed that rutherfordium behaves as the heavier homolog to hafnium in group 4. The chemical properties of rutherfordium are characterized...
48 KB (7,925 words) - 06:10, 18 September 2024
Tantalum hafnium carbide is a refractory chemical compound with a general formula TaxHfyCx+y, which can be considered as a solid solution of tantalum...
6 KB (632 words) - 04:21, 5 August 2024
The hafnium nitrides are the various salts produced from combining hafnium and nitrogen. The two most important such are hafnium(III) nitride, HfN; and...
5 KB (473 words) - 23:02, 9 May 2024
Zirconium (section Separation of zirconium and hafnium)
lustrous transition metal with a greyish-white color that closely resembles hafnium and, to a lesser extent, titanium. It is solid at room temperature, ductile...
48 KB (5,382 words) - 03:21, 16 September 2024
Hafnium (sometimes styled HAFNIUM; also called Silk Typhoon by Microsoft) is a cyber espionage group, sometimes known as an advanced persistent threat...
8 KB (608 words) - 22:09, 28 June 2024
Hafnium carbide (HfC) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C. More...
8 KB (758 words) - 00:48, 5 February 2024
Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds...
13 KB (1,306 words) - 00:57, 23 September 2023
hafnium controversy was a debate over the possibility of 'triggering' rapid energy releases, via gamma ray emission, from a nuclear isomer of hafnium...
18 KB (2,372 words) - 20:48, 22 July 2024
Hafnium tetrafluoride is the inorganic compound with the formula HfF4. It is a white solid. It adopts the same structure as zirconium tetrafluoride, with...
3 KB (209 words) - 16:57, 11 June 2023
Hafnium disulfide is an inorganic compound of hafnium and sulfur. It is a layered dichalcogenide with the chemical formula is HfS2. A few atomic layers...
4 KB (302 words) - 11:02, 10 July 2024
Hafnium phosphide (HfP) is a binary inorganic compound of hafnium metal and phosphorus. It can be obtained by heating together hafnium powder and red phosphorus...
4 KB (274 words) - 03:17, 11 May 2024
Hafnium(IV) nitrate is an inorganic compound, a salt of hafnium and nitric acid with the chemical formula Hf(NO3)4. Hafnium nitrate can be prepared by...
4 KB (220 words) - 00:53, 23 September 2023
Hafnium diboride is a type of ceramic composed of hafnium and boron that belongs to the class of ultra-high temperature ceramics. It has a melting temperature...
4 KB (314 words) - 19:07, 27 April 2024
Hafnium compounds are compounds containing the element hafnium (Hf). Due to the lanthanide contraction, the ionic radius of hafnium(IV) (0.78 ångström)...
15 KB (1,823 words) - 05:55, 30 April 2024
compositions include chemical elements such as boron, cadmium, silver, hafnium, or indium, that are capable of absorbing many neutrons without themselves...
20 KB (2,463 words) - 21:27, 5 June 2024
Hafnium tetrabromide is the inorganic compound with the formula HfBr4. It is the most common bromide of hafnium. It is a colorless, diamagnetic moisture...
2 KB (116 words) - 21:45, 21 December 2022
Induced gamma emission (redirect from Hafnium bomb)
physically capable of IGE fluorescence in safe arrangements: tantalum-180m and hafnium-178m2. Induced gamma emission is an example of interdisciplinary research...
15 KB (1,973 words) - 15:15, 28 December 2023
Hafnium–tungsten dating is a geochronological radiometric dating method utilizing the radioactive decay system of hafnium-182 to tungsten-182. The half-life...
18 KB (2,267 words) - 04:10, 7 April 2023
Hafnium silicate is the hafnium(IV) salt of silicic acid with the chemical formula of HfSiO4. Thin films of hafnium silicate and zirconium silicate grown...
3 KB (266 words) - 20:14, 5 April 2024
compounds such as molybdenum boride, hafnium diboride, titanium diboride, dysprosium titanate and gadolinium titanate. Hafnium absorbs neutrons avidly and it...
8 KB (927 words) - 01:52, 13 July 2024
Materials which have received considerable attention are hafnium silicate, zirconium silicate, hafnium dioxide and zirconium dioxide, typically deposited using...
12 KB (1,397 words) - 17:17, 4 September 2024
Hafnium(III) iodide is an inorganic compound of hafnium and iodine with the formula Hf I3. It is a black solid. Like other group 4 trihalides, hafnium(III)...
5 KB (373 words) - 10:48, 16 September 2023
refractory. Hafnium carbide is the most refractory binary compound known, with a melting point of 3890 °C. The ternary compound tantalum hafnium carbide has...
17 KB (1,857 words) - 16:55, 3 September 2024
Hafnium(IV) triflate or hafnium trifluoromethansulfonate is a salt with the formula Hf(OSO2CF3)4, also written as Hf(OTf)4. Hafnium triflate is used as...
10 KB (885 words) - 18:27, 3 January 2024
perpetrated by the Hafnium, a Chinese state-sponsored hacking group (advanced persistent threat) that operates out of China. Hafnium is known to install...
39 KB (3,622 words) - 08:30, 4 September 2024