Under high temperature and pressure conditions, add a certain percentage ofboron powder in iron-nickel powder catalyst to synthesize quality boron-doped diamond single crystal.
Through optical microscopy found that, the synthesis boron-doped diamond were dark black octahedral, intact crystal form, uniform size; using scanning electron microscopy (SEM) analysis of the morphology of boron-doped diamond. The results show that: the synthesis of octahedral boron-doped diamond crystal’s surface is smooth, flat, crystal has high degree of integrity, the excellent crystalline region of boron-doped diamond is in the V-shaped area of the {100} + {111} range.
The synthetic diamond’s growing environment contains many impurity ingredients, some of these impurities can enter into diamond as the substitutional form or the form of inclusions. Differrent impurities impact on the performance of diamond is different. Boron is a common impurity element in the diamond, in natural diamond you often can find its traces.
When the diamond contains a certain amount of boron, will change the diamond’s nature optical, thermal, chemical, electrical and mechanical. In optics make the crystal with color, with the increase of the boron content in diamond, crystals from yellow gradually becomes brownish red, gray, blue, until it becomes dark black; in thermology, diamond has excellent inoxidizability, heat resistance and thermal conductivity; in electrical aspects, make the diamond from insulation body turn into the P-type semiconductor, even have the semimetal’s conductive; in chemistry, the boron-doped diamond can cut iron family material; in the mechanical properties, the diamond’s abrasion resistance, toughness, compressive strength are enhanced. In different areas has shown a broad vision, which aroused the interest of many researchers. However, with the increase of the amount of boron doped, relatively easy to synthesize octahedral diamond with boron, the synthesized crystals’ surface defects were increased.
The iron-based alloy powder (200 mesh) as catalyst solvent, scaly graphite powder (200 mesh) as the carbon source, use high-purity boron powder as additive. The synthesis conditions is 5.0GPa, 1450K-1700K, conduct an experiment. Iron-based catalyst, flake graphite and the right amount of boron powder according to a certain percentage uniformly mixed and pressed into synthetic rods, assembling the pressed barstock in pyrophyllite synthesis block. The pyrophyllite Synthesis block before assembling was through
The application of tungsten in various industries
Steel Industry Most of tungsten applied in the production of special steels. The widely used high-speed steel was containing 9-24% of tungsten, 3.8-4.6% of chromium, 1-5% of vanadium, 4-7% of cobalt, 0.7-1.5% of carbon.
Magic effects of coconut oil
According to records, coconut oil can be regarded as the nobility of skin care plant extracts. It was rich in exotic tension of tropical plants, which can enhance the contractile force of the pores, perfectly beautify and nourish the skin.
The Evolution and Impact of Abamectin and Emamectin Benzoate in Pest Control
Abamectin and its derivative, emamectin benzoate, have emerged as pivotal substances in the realm of pest control, offering a broad-spectrum efficacy against various pests while maintaining a favorable environmental profile. As the agricultural industry continues to evolve, these compounds have adapted to meet the growing challenges of pest resistance, expanding their market applications and maintaining cost-effectiveness despite rising production costs.
