In tungsten carbide, carbon atoms embedded in the gap of the tungsten metal lattice do not destroy the original metal lattice and form interstitial solid solution, so it is also called interstitial compound. Tungsten carbide can be prepared by heating a mixture of tungsten [...]
In recent years, great progress has been made in the lead-free conversion of electronic materials. Sodium potassium niobate (KNN) and bismuth sodium titanate (BNT) are the two most competitive components that are expected to partially replace the currently used lead zirconate titanate (PZT) component. [...]
Crystal ferrocene is a kind of burning rate catalysts, appearance is orange spicules, ferrocene in the powder and the latest crystalline morphology, crystalline in nature and the powder is the same, but in actual use crystal ferrocene can solve the problem of powder of [...]
1. Refined petroleum catalyst
Cobalt products have a long history as catalysts for petroleum refining and play an important role in promoting the development of petroleum refining. If there are some metal cobalt, aluminum, iron alloy catalyst; Cobalt oxide is also important as a catalyst [...]
As of the end of 1996, China has identified 222 molybdenum mining areas, distributed in 29 provinces, autonomous regions and municipalities. Molybdenum reserves reach 8.4200 million tons, of which A + B + C grade accounts for 39.8% of the reserves, which is 3.345 [...]
Lubricating oil is a common lubricating material, which can reduce equipment wear and tear, prolong equipment service life and reduce maintenance cost. Lubricating oil is composed of different types of base oils and various additives with different properties, among which additives can make up [...]
It is well known that the heat generated by the semiconductor devices work is the key factor that causes for the failure of semiconductor devices, and the thermal conductivity of the insulating substrate is the key to affect the whole semiconductor cooling device, in [...]
1. Heat-conducting silica gel and epoxy resin:
Ultra-high thermal conductivity nano-aln composite silica gel has good thermal conductivity, good electrical insulation, wide electrical insulation service temperature (working temperature -60℃- 200℃), lower consistency and good construction performance. Products have reached or exceeded imported products, because can [...]
Ammonia is the largest chemical product produced on earth, with an annual production of more than 150 million tons, and has been synthesized by the Haber-Bosch process for more than 100 years. However, the Haber-Bosch process uses hydrogen derived from natural gas reforming to [...]
Strontium isotope ratio (87Sr/86Sr) is widely used in the fields of earth science, astrochemistry, environmental chemistry, food origin traceability, archaeology and so on. Thermoionization mass spectrometers (TIMS) have been regarded as the benchmark technique for 87Sr/86Sr ratio analysis since the 1960s. This method not [...]
