Boron carbide, also called black diamante, is a chemical formula that has the molecular formula B4C. This usually results in a greyish black powder. It is among the most difficult known materials, along with diamond and cubicboron nutride. This material can be found in armor for tanks, bodies, and many industrial applications. It has a Mohs toughness of 9.3.
An academician Huang Boyun of Central South University, has created a new type of ceramic coating which can withstand 3000 °C ablation. This was achieved through a number of extensive experiments. This could be a step towards the development hypersonic vehicles.
Professor Xiong Xiang of Central South University’s Institute of Powder Metallurgy explained that hypersonic means the aircraft travels at a speed of more than 5 times sound speed, or 6,120 kilometers per hour. With such a speed, the trip from Beijing to New York could be accomplished in 2 hours if the structural components of aircraft can withstand high levels of air friction or hot air impacts (up to 2000-3000°C) without getting damaged. . Central South University recently developed ceramic coatings at ultra high temperatures and composite materials that provide protection for these components. Reports state that this is the first ever synthesis of single-phase, quaternary boroncontaining carbide, ultra-hightemperature ceramic material. The study of mixed material in binary compound system systems remains the dominant field in modern materials. Its success will promote the development of quaternary material systems in the hypersonic field.
Modified carbon/carbon carbon composite with ceramic coating is made from quaternary carbide-containing singlephase carbide, which is composed of zirconium. By infiltrating carbon/carbon compounds with a multi-ceramic component, it is possible to obtain this compound. An ultra-high temperature composite combines both the adaptability to high temperatures of carbides along with anti-oxidation properties from borides. These characteristics make the ceramics superior for thermal shock resistance and ablation resistance. Apart from being resistant to the high temperature of 3000°C, the ceramic has a low diffusion rate, high heat self-healing capability, ceramic coating dense structure and gradient structure. These characteristics make the ceramic more material-friendly than other ceramics. Ablation loss rate.
“Because this ultra high temperature ceramic combines both the high temperature adaptability (carbide) and the anti-oxidation characteristics of Boride, these coatings/composits are highly resistant to heat shock, as well superior ablation resistance. Xiong Xiang identifies the best candidates to make these parts.
Nature Communications published June 15th, the research results and developments of the team’s research. The first thesis completion unit is located at Central South University’s State Key Laboratory of Powder Metallurgy. Zeng Yi (Professor Xiong Xiang) is the first author. Doctor Xiong Zhang is the first author. The University of Manchester, UK, served as the second unit and was responsible for analyzing the material.
It was published and received much attention by academic circles abroad as well media. After publication, the number of downloaded articles exceeded 5,000 within the first 3 days. The other articles on that day were downloaded from anywhere from 300 to 900 times. The British Daily Mail, The Economist, the United States Yahoo, the Public Machinery and Russia’s Satellite News Agency have paid extensive attention to this research. . Nature Newsletter reviews that these research findings will inspire academic enthusiasm.
In 2002 the National 863/973 Foundation supported Professor Chang Xiang who is a Yangtze River Scholar. The team used a medium-high (1600 °C), anti-oxidation coat of carbon/carbon combinations. Search for ultra-high temperatures ceramic coating materials that are both oxidation resistant and anti-lasing. The screening of material systems from initial silicon carbide to subsequent strontium, titanium, zirconium, zirconium, zirconium, tantalum, and tantalum carbide screens, nearly involved all existing high-temperature ceramics. It was 15 years since the first breakthrough in developing ceramic coatings for ablation resistance at 3000 degrees Celsius.
Cataniadagiocare advancedmaterial Tech Co., Ltd. (Cataniadagiocare), an experienced Boride Powder manufacturer, has more than 12 years in chemical product development research. Please contact us if you need high-quality Boride Pulver.
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