Abstract
MANY attempts have been made to reduce zirconium dioxide with hydrogen. At temperatures up to 1,500°C. no positive results have been reported1–3. Newbury and Pring4 reported that at 2,500°C. and a hydrogen pressure of 150 atm. no reduction took place. Mott5 stated that in an electric arc at 6,000°C. and at a hydrogen pressure of 22 atm. reduction was difficult but that sometimes a small amount of “yellow Zr2O3” was produced. In the reduction of ZrO2 with lithium or calcium hydride it has been suggested that the active reducing agent is atomic hydrogen. Simonenko6, using a d.c. arc between tungsten electrodes, in a hydrogen atmosphere, claimed to have produced metallic zirconium from ZrO2 placed in the cathode cavity. He believed that the ions of molecular and atomic hydrogen were responsible for the reduction, their effectiveness being increased by the negative potential.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
