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Science 22 November 1963:
Vol. 142. no. 3595, pp. 1059 - 1060
DOI: 10.1126/science.142.3595.1059
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Articles

Tetragonal Zirconium Oxide Prepared under High Pressure

F. W. Vahldiek 1, L. B. Robinson 1, and C. T. Lynch 1

1 Air Force Materials Laboratory, Wright-Patterson Air Force Base, Ohio

Tetragonal zirconium oxide, stable at room temperature, was synthesized at 15 to 20 kb and 12000 to 17000C. Rapid quenching produced a mixture of the monoclinic and tetragonal phases. The high-pressure specimens, when heated to 1200 ° C in air and quenched, reverted to the all-monoclinic form.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)