Blog | VICHEM - Part 3

20 3月

Nano titanium diboride reinforced aluminum alloy composites

Nano-titanium diboride particle reinforced aluminum matrix composites, TiB2p/Al has excellent mechanical and physical properties, such as high specific strength and specific modulus, wear resistance, fatigue resistance, low density, good dimensional stability, etc. Moreover, compared with continuous fiber reinforced composite materials, it has a significant low-cost advantage. The materials are isotropic, easy to process, flexible and diverse preparation, and can be manufactured by traditional equipment for secondary processing, such as extrusion, calendering and forging. Nano-titanium diboride particle reinforced aluminum matrix composite [...]

Application analysis of nanometer tungsten trioxide WO3

WO3 (VK-W50) xanthelatine has a large specific surface area and significant surface effect. It is a good catalyst, which can be used as both the main catalyst and the cocatalyst, and has high selectivity for the reaction. WO3 has a strong ability to absorb electromagnetic wave, and can be used as an excellent solar energy absorbing material and recessive material. WO3 is an N-type semiconductor material with excellent gas sensitivity and is sensitive to H2S, NH3, H2, O3 and [...]

Technical Support 详情...

08 3月

Cesium fluoaluminate flux moisture meter use method

Cesium fluoaluminate flux moisture meter, also known as cesium fluoaluminate flux moisture meter. Its working principle is oven drying weight reduction method, by heating the sample moisture evaporation, and then calculate the sample weight difference before and after heating and the weight percentage of the sample before heating, that is, to obtain the water content of cesium fluoaluminate flux. The halogen moisture meter designed according to oven heating constant weight method meets the verification requirements of JJG 658 drying [...]

Application of manganese silicide in materials

As a kind of refractory intermetallic compound, manganese silicide is a transition metal silicide. Due to its unique physical and chemical properties, it has been successfully applied in the fields of complementary metal oxide semiconductor components, thin film coatings, block structure components, electric heating elements, thermoelectric materials and photovoltaic materials. The nanomaterials show special electrical, optical, magnetic and thermoelectric properties, and even have potential application value in the field of catalysis. However, the traditional preparation methods such as metallurgy [...]

Technical Support 详情...

24 2月

Hidden properties of nanoscale germanium telluride

Germanium telluride (GeTe) is a ferroelectric Rashba semiconductor with many interesting properties. The crystals are made of nanodomains whose ferroelectric polarization can be changed by an applied electric field. This ferroelectric property can also be used to change the spin of electrons in each domain, thanks to the so-called Rashba effect. Germanium telluride is therefore an interesting material for use in spintronic devices, allowing data processing with significantly less energy input. Now, HZB and a team from Lomonosov Moscow State [...]

Technical Support 详情...

18 2月

Chemical properties and uses of stannous chloride

Stannous chloride, chemical formula SnCl2, also known as tin dichloride. The former is a transparent crystal with a melting point of 246℃, a boiling point of 652℃, and a relative density of 3.95. Soluble in water and oxidized in air to form insoluble chloride oxides. It is hydrolyzed in water to form a precipitation of basic stannous chloride (Sn(OH)Cl). When preparing its solution, it is necessary to dissolve it with concentrated hydrochloric acid and then dilute it to inhibit [...]

Technical Support 详情...

12 2月

The researchers produced defective cuprous iodide films

According to foreign media reports, a fault-free film of cuprous iodide composed of a crystal has been created by physicists at RIKEN. Atomic planar samples are the driving force behind better semiconductors. Semiconductors are at the heart of many optoelectronic devices, including lasers and light-emitting diodes (leds). Engineers hope to use cuprous iodide in semiconductors because it is an excellent conductor that remains stable above room temperature. The problem is that it is difficult to make a film of cuprous [...]

Trade News 详情...

05 2月

Preparation of nickel silicide nanowires

The molecular weight of nickel silicate is 145.51, the melting point is 1309℃, and the relative density is 7.217. Nickel silicate dissolves rapidly in hydrofluoric acid, slowly in hydrochloric acid, and insoluble in water. Nickel silicate reacts violently with fluorine at room temperature to white heat, and chlorine gas reacts with red heat. Nickel silicate decomposes in aqua regia. Method: The silicon oxide, nickel oxide (Ⅱ) and aluminum can be heated in the blast furnace. Metallic silicide has low resistivity, [...]

Technical Support 详情...

29 1月

A test method for nickel chloride content hexahydrate

1. A test method for the content of nickel chloride hexahydrate is characterized in that the test method includes the following steps: a: take 1 volume of the liquid to be tested with a pipette to 5 volume volume bottles, add 1 volume of concentrated nitric acid, and then add 2 volume of ethylene glycol, and then use pure water to fill 5 volume parts to obtain liquid A; b: Take 1 liquid to be tested into a 5-volume [...]

Technical Support 详情...

23 1月

Tungsten trioxide blue tungsten oxide production

Ammonium paratungstate is heated in a rotary furnace with wet dust collection, the vaporized crystal water is discharged first, and then a large amount of combined ammonia is lost, and finally tungsten trioxide (industrial) is formed. Blue tungsten oxide has the characteristics of good activity, larger than surface, easy doping and maintaining the original crystal shape. Therefore, both at home and abroad have attached great importance to the production of blue tungsten oxide. According to the characteristics of ammonia pyrolysis [...]

Articles