I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
PDH catalyst Last month, Clariant's Catalyst business (Munich, Germany; www.clariant.com)…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGENGINEERING PRACTICEEQUIPMENT & SERVICESFOCUS
Focus on Pumps
Self-priming, liquid-ring pumps enable hygienic operation The CFS AS/ASH Series…
NEW PRODUCTS + Show More

Comment Processing & Handling

Protecting oxidation-prone materials with a crust of salt

By Gerald Ondrey |

High-temperature synthesis of ceramics and other materials normally requires a cost-intensive inerting atmosphere to prevent oxidation. Now, researchers from Forschungszentrum Jülich (Germany; www.fz-juelich.de) have developed a process — the molten salt shielded synthesis/sintering (MS3) process — that used molten salts as both a reaction medium and to protect ceramic powders from oxidizing during high-temperature processing in air. Synthesis temperatures are also reduced, and the final product is a highly pure, fine and loose powder that requires no additional milling. Described in a recent issue of Nature Materials, the MS 3 process (diagram) has been used for the synthesis of so-called MAX phases, which are ternary transition metal compounds that combine properties of both ceramics and metals — heat resistant and lightweight like ceramics, yet less brittle, enabling them to be deformed like metals. MAX phases are also the building blocks for MXenes — compounds that are similar to graphene and have “extraordinary” electronic properties. These relatively new materials have potential applications in turbines, aircraft and aerospace and medical implants, but making MAX phase powders at the industrial scale has not been…
Related Content
Ceramic pump makes molten metals motive
Researchers at the Georgia Institute of Technology (Ga. Tech; Atlanta; www.gatech.edu) have demonstrated a precision-machining technique to manufacture an entire…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Quadruple Sensor Lifetime with a Retractable Housing
Minimizing Explosion Risk Where Other Solutions Cannot
Minimizing Corrosion with Fast, Robust Gas Analysis
Lower Measurement Point Costs with Automatic pH Sensor Cleaning
Reduce the Risk of Corrosion in Fertilizer Production

View More

Live chat by BoldChat