Nitride Sentence Examples
Aluminium nitride (A1N) is obtained as small yellow crystals when aluminium is strongly heated in nitrogen.
Boron nitride BN is formed when boron is burned either in air or in nitrogen, but can be obtained more readily by heating to redness in a platinum crucible a mixture of one part of anhydrous borax with two parts of dry ammonium chloride.
After fusion, the melt is well washed with dilute hydrochloric acid and then with water, the nitride remaining as a white powder.
The fixation of nitrogen as a nitride has not been attended with commercial success.
Mehner patented heating the oxides of silicon, boron or magnesium with coal or coke in an electric furnace, and then passing in nitrogen, which forms, with the metal liberated by the action of the carbon, a readily decomposable nitride.Advertisement
A heavy white precipitate, consisting of ammonium chloride and columbium nitride, is thrown down, and the ammonium chloride is removed by washing it out with hot water, when the columbium nitride remains as an amorphous residue (Hall and Smith, loc. cit.).
This view had currency until 1849, when Wohler showed that the crystals are a compound, Ti(CN)2.3T13N2, of a cyanide and a nitride of the metal.
The ammonia found in the acetylene is probably partly due to the presence of magnesium nitride in the carbide.
On decomposition by water, ammonia is produced by the action of steam or of nascent hydrogen on the nitride, the quantity formed depending very largely upon the temperature at which the carbide is decomposed.
It combines directly with most elements, including nitrogen; this can be taken advantage of in forming almost a perfect vacuum, the oxygen combining to form the oxide, CaO, and the nitrogen to form the nitride, Ca 3 N 2.Advertisement
The hydrogen in ammonia is capable of replacement by metals, thus magnesium burns in the gas with the formation of magnesium nitride Mg3N2, and when the gas is passed over heated sodium or potassium, sodamide, NaNH 2, and potassamide, KNH 2, are formed.
When heated to redness the amide is decomposed into ammonia and potassium nitride, NK 3, which is an almost black solid.
By passing ammonia over heated chromic chloride, the nitride, CrN, is formed as a brownish powder.
A nitride, W2N3, is obtained as a black powder by acting with ammonia on the oxytetrachloride or hexachloride; it is insoluble in sodium hydroxide, nitric and dilute sulphuric acids; strong sulphuric acid, however, gives ammonia and tungstic acids.
Barium nitride, Ba 3 N 2, is obtained as a brownish mass by passing nitrogen over heated barium amalgam.Advertisement
It appears to be silver nitride Ag 3 N, but it usually contains free silver and sometimes hydrogen.
The nitride AgN3, silver azoimide, is also highly explosive.
It absorbs ammonia gas, forming the compound FeC12.6NH31 which on heating loses ammonia, and, finally, yields ammonium chloride, nitrogen and iron nitride.
A nitride appears to be formed when nitrogen is passed over heated iron, since the metal is rendered brittle.
It absorbs nitrogen when heated in a current of that gas, forming a nitride.Advertisement
It is extremely lightweight but is the third hardest material known to science, next to diamond and cubic boron nitride.
Lithium is the only metal in Group 1 to form a nitride.
For example, we have produced silicon nitride containing small amounts of lanthanide ions.
Dr. Andrew L. Hector Research interests - nitride materials Materials with nitride materials Materials with nitride as the anion are much less well studied than those with oxide.
Ongoing work includes using ion implantation for novel device and circuit architectures and for processing gallium nitride in novel ways.Advertisement
The engine used a conical rotary valve made from pure boron nitride.
The pistons are also coated with titanium nitride to reduce friction with the seals.
Figure 4 shows an optical image of a silicon nitride block which has been damaged on the right side.
Unfortunately aluminum nitride in particular has angular particles which are abrasive, leading to excessive mold wear.
In each case, you will get a mixture of the metal oxide and the metal nitride.
Pure amorphous boron is a chestnut-coloured powder of specific gravity 2.45; it sublimes in the electric arc, is totally unaffected by air at ordinary temperatures, and burns on strong ignition with production of the oxide B 2 0 3 and the nitride BN.
Columbium nitride, Cb3N5 (?), is formed when dry ammonia gas is passed into an ethereal solution of the chloride.
It combines directly with nitrogen, when heated in the gas, to form the nitride Mg 3 N 2 (see Argon).