Diamond Lesson: Diamond is a symbol of love and an indispensable element in industry. Diamond is one of the top five precious stones, do you know enough about it? Let Foxlink take you through all aspects of the diamond, from how it is created to how to select it!
Superconductors are an amazing physical phenomenon that exhibits properties of zero resistance and complete repulsion of magnetic fields under certain conditions. The development of this field is entangled with many famous scientists, important experimental discoveries and theoretical breakthroughs. Let’s explore the trajectory of superconductor history and understand how it has gradually been revealed and applied from a mysterious phenomenon.
“Diamond is just plain old carbon”. That’s right. Diamonds, like graphite, are isomers of pure carbon. That’s why mankind has never given up on the search for a way to create artificial diamonds. After 157 years, it was discovered that the most important factor in successfully turning carbon into diamonds was the use of a catalyst, or catalyzer.
Diamonds, diamonds, diamonds, how do they come out? Natural diamonds are formed by volcanoes, plate movements, meteorites, etc. How do man-made diamonds come out? Let HONWAY take you on a journey!
Diamonds We Know Diamond, the first of the five precious stones, symbolizes flawless purity, fidelity and eternal sparkle, and is the best symbol of love. The diamond ring has become the most important token of marriage. Diamonds have also steadily increased in value by 5%-10% or more each year, making them a luxury item that …
Gemstone (Gem) Mohs hardness (Hardness) Specific Gravity (Specific Gravity) Refractive Index (Refractive Index) Reflectivity (Reflectivity) Double Refraction (Double Refraction) Dispersion (Dispersion) Synthetic Rutil (Synthetic Rutil) 6.5 4.25 2.76 19.75 0.287 0.330 Synthetic Moissanite (Synthetic Moissanite) 9.25 3.22 2.67 20.67 Strained 0.104 Lithium Niobate (Lithium Niobate) 5.5 4.64 2.55 14.87 0.090 0.130 Diamond (Diamond) 10 3.52 …
Identification Characteristics of Diamonds and Simulants Read More »
Currently, the world’s popular high-temperature and high-pressure diamond synthesizing equipment mainly consists of two-sided tops (belt, which is mainly popular in Europe and the United States), six-sided tops (unique to Mainland China), and splitting spheres (barssplitsphere, Russia) or modified splitting spheres (Gemesis Company). In 1954, before Christmas, the General Electric Company in the United States …
Diamond Synthesis Method — High Temperature and High Pressure Read More »
In 1994, Thomas R. Anthony et al. of GE filed U.S. Patent 5,437,891 (issued in 1995) stating that the growth rate of cubic facets (100) of polycrystalline diamonds can be increased by chemical vapor deposition (CVD). In particular, if a small amount (e.g., 1%) of air (78% nitrogen, 21% oxygen, 1% argon) is added to …
chemical vapor deposition of diamond monocrystalline Read More »
Natural diamonds are produced at depths of over 130 kilometers. It has a unique cubic crystal structure. Each carbon atom in a diamond is bonded to four other carbon atoms, making it the hardest natural substance known in the world. How are diamonds formed? Let’s find out!
How to make diamonds by chemical vapor deposition? Chemical vapor deposition (CVD) produces pure, high-performance solid materials. A small diamond, which serves as the “core”, is placed in a vacuum environment to remove impurities and injected with high temperature gases – methane and hydrogen – at 3,000 degrees Celsius, which cracks to form electrically charged …
Diamond Synthesis Method – Chemical Vapor Deposition Read More »
