News

News

New method developed to produce hardest material

Date: 2019-10-30
Views: 273

Researchers have developed a new procedure for producing materials that require high hardness and strength.


According to the researchers, including those from the University of Seville in Spain, the material is a very hard black solid, which remains stable at very high temperatures, and is ultra-resistant to radioactivity. 


The team has made a variety of the compound boron carbide—one of the hardest synthetic substances known to man—with potential application as a cheap, ultra-resistant material for the design of planes, cars, and other means of transport. It may be used for making parts of blasting nozzles, abrasive water jet cutting, wire-drawing dies and having nuclear applications such as reactor control rods and neutron absorbing shielding.


The study noted that the boron carbide family consisted of compounds from B4C to B14C, depending on the proportion of B (boron) and C (carbon), and each had different physical properties. 


Boron carbide, used as a powder with various grain sizes or as a ceramic component, is manufactured from the raw materials boron oxide and carbon in an arc furnace at temperatures above 2,400 °C.


Earlier studies had estimated that B6C—with 6 boron atoms to each one of carbon—was theoretically ultra-resistant to radioactivity, but a method to produce it did not exist until now, the researchers said.


In the new study, the researchers used the technique of laser zone floating consisting of fusion by means of the application of intense laser radiation and then rapid solidification.


The researchers found that the boron carbide obtained in this way has a hardness of 52 Gigapascals (GPa), and Young modulus of 600 GPa.


In comparison, the hardness of diamond is around 45 GPa, although it has a Young modulus of 1050 GPa, the researchers said.


'This make phase B6C the hardest material in nature after diamond, and the cubic phase of boron nitride,' the researchers wrote in the study. 


Via: https://www.theweek.in

News / Recommended news More
2020 - 05 - 14
MIM is currently the most scientific near net shape forming technology for metal parts formation. It can flexibly adjust to various performance indexes and has been successfully applied to popular areas such as auto parts, 3C digital, medical equipment and tool locks. Hence, traditional molding technologies such as CNC fine processing, to some extent, are being replaced. Although the future of MIM...
2020 - 05 - 14
The East China Powder Metallurgy Technology Exchange Meeting, rotationally presented by the powder metallurgy societies in East China, has been successfully held for 17 years since 1982. It’s considered as one of the important platforms for China's powder metallurgy industry exchanges, and has actively promoted the flourishing development of the industry and related industries in East China and ev...
2020 - 05 - 14
Ceramic 3D printing can be used in preparation of multifunctional ceramics with complex structure and high precision, and will be widely used in architecture, engineering, medicine, aerospace and more. In recent years, metal and plastic 3D printing companies is shifting to the ceramic materials field that has increasing demand for strong, tough and high temperature resistant parts, which promotes ...
2020 - 05 - 07
Scientists in the University of Maryland (UMD)'s Department of Materials Science and Engineering (MSE) have reinvented a 26,000-year-old manufacturing process into an innovative approach to fabricating ceramic materials that has promising applications for solid-state batteries, fuel cells, 3D printing technologies, and beyond.Ceramics are widely used in batteries, electronics, and extreme environm...
Share:
Uniris Exhibition Shanghai Co., Ltd.
Shanghai Branch
Tel: 4000 778 909 
E-mail:irisexpo@163.com

Guangzhou Branch
Tel: 020-8327 6389
E-mail:iacechina@unifair.com

IACE CHINA Official Website
犀牛云提供企业云服务
犀牛云提供云计算服务
Scan