hafnium sentence in Hindi
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- Moseley was killed in World War I in 1915, years before hafnium was discovered.
- His thesis was " The Radioactive Decay of Hafnium and Thulium Isotopes ".
- Hafnium tetrachloride is volatile and can therefore easily be separated from the involatile zirconium trihalide.
- What is hafnium's cosmic history?
- Titanium, hafnium and zirconium stabilize the ? phase at room temperature when rapidly cooled.
- Hafnium is widely used in filaments and electrodes, as well as in some superalloys.
- Most of the hafnium produced is used in the production of control rods for nuclear reactors.
- Small additions of hafnium increase the adherence of protective oxide scales on nickel-based alloys.
- For example, hafnium is almost always present in quantities ranging from 1 to 4 %.
- Hafnium diboride is another such material.
- It can be used alone or in a sintered mixture of hafnium and boron carbide powders.
- SHRIMP-I also pioneered ion microprobe studies of titanium, hafnium and sulfur isotopic systems.
- Hafnium, one of the last stable elements to be discovered, presents an interesting case.
- Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten.
- At levels of 50 mg / m 3, hafnium is immediately dangerous to life and health.
- For the fluoride complexes, zirconium and hafnium tend to form hepta-and octa-complexes.
- Zirconium and hafnium therefore have very similar chemical behaviour, having closely similar radii and electron configurations.
- For example, ferrocene is alkylated with allyldimethylchlorosilane more efficiently using hafnium chloride relative to aluminium trichloride.
- The addition of silicon to hafnium oxide increases the band gap, while decreasing the dielectric constant.
- Nitrogen is sometimes added to hafnium silicate for improving the thermal stability and electrical properties of devices.
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