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Silicon carbide whiskers are a kind of single-crystal fiber with a certain length-to-diameter ratio, which has very good high temperature resistance and high strength. It is mainly used in toughening applications where high temperature and high strength applications are required. Such as: aerospace materials, high-speed cutting tools. At present, it has a very high performance-price ratio. Silicon carbide whiskers are cubic whiskers, and diamonds belong to a crystal form. They are the whiskers with the highest hardness, the largest modulus, the highest tensile strength and the highest heat resistance temperature. It is both α-type and β-type, in which β-type performance is better than α-type and has higher hardness (Mohs hardness of 9.5 or more), better toughness and electrical conductivity, anti-wear, high temperature resistance, especially earthquake resistance Corrosion-resistant, radiation-resistant, has been applied to aircraft, missile casings and engines, high-temperature turbi...

The application of nanomaterials in surface engineering is mostly to stabilize the nanoparticle dispersion in the organic medium. For example, the workpiece is ground and the antifriction material is dispersed in the lubricating oil in an appropriate manner. The ultrafine polishing liquid is nanometer SiO2, nanometer. Lubricants for nanoparticles such as Al2O3, nano-MoS2, nano-Cr2o3, and nano-diamonds. It has been found that nano-diamond nano-balls and super-hard properties make nano-lubrication in the friction process, and also have the effect of polishing the surface of the friction pair to improve the surface finish of the material, thereby obtaining an ultra-smooth surface with excellent performance. However, due to the high hardness of the diamond, the magnetic head gold wire is easily thrown in the hard disk head polishing to make the magnetic head scrap. Our company adopts self propagating high-temperature synthesis (SHS) and fractional purification technology to prepare ...

Sodium formate , HCOONa, is the sodium salt of formic acid, HCOOH. It usually appears as a white deliquescent powder. Sodium formate is a white crystalline powder with water absorbing performance and slight formic acid odor, soluble in water glycerol, sightly soluble in ethano, not soluble in ether. Sodium formate's melting point is 253°C. The application of  sodium formate  is as following: 1. Produce the formic acid with sodium formate. Formic acid can be obtained after sodium formate reaction with sulfuric acid, sodium sulfate produced at the same time, the production process is simple. Foreign exploitation of formic acid is better, the application range has expanded each year, formic acid is also increasing. Formic acid consumption abroad is the largest leather tanning and leather for treatment, to prevent mildew. The second largest use is agriculture, for saving green fodder and cereals. 2. Produce the oxalic acid with sodium formate. For sodium formate dehydro...

Select respectively 20 pigs of 15 kg and 35 kg, which are well developed, and good nutritional status and approximate, to experiment with feeding 30days, different weight of the pigs are divided into four groups, each group 5 pigs, the first and the second group are fed with adding 0.4 and 0.6 potassium diformate respectively, the third group is fed with adding antibiotics, the fourth group is fed with no antibiotics and potassium diformate, after 30 days, the experiment result is as following: Index The first group The second group The third group The fourth group Number of diarrhea 3 2 4 6 Days of diarrhea 9 8 11 13 Ratio of diarrhea 9.0% 5.3% 14.6% 26% Remarks: Ratio of diarrhea=Number of diarrhea/ （ total pigs*experiment days)*100% The growth performance of pigs with potassium diformate Items Piglet Growing pigs Fattening pigs The whole growth  process Average Daily Gain （ kg/d) 0.55 0.83 0.91 0.74 A...

The purpose of surface modification of  ultrafine powder  is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the added value of the powder. At present, there are many methods for surface modification, and the classification method varies depending on the angle of analysis of the problem. The powder surface modification methods are divided into six categories, namely: surface coating modification, surface chemical modification, mechanical force chemical modification, capsule modification, high energy modification, and precipitation reaction modification. Let us introduce the principle and function of Mechanical chemical modification. Mechanical chemical modification refers to the change of min...