Technical Support

Safety technical specification for ammonium metavanadate

Part one: chemical name Chinese name of chemical: ammonium metavanadate Chemical name: ammonium vanadate English name: chemicals ammonium metavanadate English name: ammonium vanadate Part 2: composition/composition information Harmful composition: ammonium metavanadate Content: ≥ 99% CAS No. 55-7803-6 Part iii: risk overview Risk category: Invasion route: Health hazards: dust can irritate the eyes, skin and respiratory tract. Death can be caused by inhalation and oral administration. Inhalation causes coughing, chest pain, pain, metallic taste in the mouth and mental symptoms. Have damage to liver, kidney. Skin contact can cause hives. Environmental hazards: harmful [...]

Application of niobium silicide in material

Niobium (Nb) is a kind of refractory metal with high melting point (2468℃), moderate density, corrosion resistance, radiation resistance, and high temperature strength, with good mechanical properties at high temperature. The excellent properties of niobium and niobium alloy make it one of the important candidate materials for high-temperature structural parts in aviation, aerospace and nuclear industry, which can be used to manufacture rocket engines, nuclear reactors and other key components. However, its poor oxidation performance, pure niobium at 600℃ [...]

The invention relates to a titanium aluminum carbon and titanium carbide composite hydrogen storage material and a preparation method thereof

Technical scheme of the invention are as follows: a carbon titanium aluminum and titanium carbide composite hydrogen storage material, its characteristic is: described in the composite hydrogen storage material is composed of the following components: titanium aluminum carbon for ternary compound, described the specific of Ti3AlC2 or Ti2AlC, titanium carbide described as TiCx, of which 0.48 x 0.8 or less, or less composite hydrogen storage materials of titanium aluminum carbon mass ratio of 2% to 15%, the rest for [...]

A method for preparing molybdenum boride powder

A method of preparation of boride molybdenum powder preparation steps in the synthesis of high temperature and high pressure way, according to the synthetic before B/Mo mole ratio of n (n = 0.5, 1, 2, 2.5, 4) Settings, in full compliance with material control design phase of boride molybdenum powder, achieve the boride phase of molybdenum materials synthesis and controllable, and synthesis of boride molybdenum powder granularity and the crystal grain size is complete, excellent performance. The method has [...]

A method for preparing large area monolayer tungsten selenide single crystal

The present invention relates to the field of microelectronics technology, in particular to a Chemical vapor deposition (CVD) method for the preparation of a single crystal of monolayer tungsten diselenide (WSe2). Background technology: With molybdenum disulfide (MoS2), two dock selenide (WSe2) represented by a two-dimensional function of transition metal chalcogenide materials in the process of multi-layer to single layer, can be achieved by indirect band gap to direct band gap, with its unique physical and chemical properties make it in electronic [...]

Application of tungsten oxide

Tungsten oxide, also known as tungsten hua, chemical formula WO3. Pale yellow rhombic crystal, the color deepened when heated, and then returned to light yellow after cooling. Stable in air, melting point is 1473℃, boiling point is higher than 1750℃, relative density is 7. 16. Insoluble in water and inorganic acids except hydrofluoric acid, soluble in hot concentrated sodium hydroxide solution and ammonia water. Tungsten oxide is both an n-type semiconductor material and a “d0” oxide, which gives it [...]

Capacitor characteristics and applications of niobium oxide

In recent years, there have been continuous research reports on new oxide solid acids, among which the research on the fifth subgroup elements (V, Nb, Ta) has always been the focus of solid acid research. In industry, niobium pentoxide and tantalum pentoxide are collectively referred to as earth acids. Wet tantalum oxide (hydrated Ta2O5), niobium oxide (Nb2O5) are all excellent properties of the potential of solid acid catalyst. Niobium has very important research value, so we first give a [...]

Preparation method of nanometer ferroferric oxide Fe3O4 particles

The development of nanotechnology has opened up a new field for the research of various materials. Nowadays, a variety of nanomaterials have been fully applied in the field of autocorrelation, and the value of nanomaterials has been fully affirmed. Therefore, the development of new nanomaterials has become a necessity of modern society, with great development prospects. Nanometer Fe3O4 has the characteristics of small particle size, high specific surface area and magnetic sensitivity. It has been widely applied in the [...]

How to make hexagonal boron nitride powder

Boron nitride is a new ceramic material with excellent properties and great development potential. Hexagonal boron nitride (h-bn) is an isomer of boron nitride. The structure of hexagonal boron nitride is similar to that of graphite, with a hexagonal layered structure, soft texture, strong workability, and white color, commonly known as “white stone ink”. The following to introduce the commonly used method of making powder of hexagonal boron nitride. 1. Chemical vapor deposition (CVD) method. H-bn powder is generally prepared by [...]

Technology and principle of industrial extraction of vanadium pentoxide

The main raw materials for industrial extraction of vanadium pentoxide are vanadite-containing coal mines and vanadium titanomagnetite. The grade of vanadium pentoxide in vanadite-containing coal mines is generally 0.5-1.5%, and vanadium titanomagnetite is vanadium pentoxide Grade is generally between 1.0 and 5.0%. Mineral decomposition There are two kinds of decomposition methods of vanadium ore, the first is sintering method, the pulverized ore powder mixed with soda ash or sodium salt and sintered at high temperature, so that the low-priced vanadium oxidized and [...]