TY  - JOUR
AU  - Dzivenko, D. A.
AU  - Zerr, A.
AU  - Miehe, G.
AU  - Riedel, R.
AU  - DESY
TI  - Synthesis and properties of oxygen-bearing c-Zr<sub>3</sub>N<sub>4</sub> and c-Hf<sub>3</sub>N<sub>4</sub>
JO  - Journal of alloys and compounds
VL  - 480
SN  - 0925-8388
CY  - Lausanne
PB  - Elsevier
M1  - PHPPUBDB-15542
SP  - 46-49
PY  - 2009
N1  - © Elsevier B.V. ; Post referee fulltext in progress; Embargo 12 months from publication
AB  - This paper presents our recent results on synthesis and properties of high-pressure cubic zirconium(IV)-and hafnium(IV) nitrides having Th3P4-type structure, c-M3N4(M=Zr or Hf). c-M3N4were first syn-thesized in microscopic amounts in a laser-heated diamond anvil cell (LH-DAC) at pressures above15GPa and temperatures above 2500K. Further, macroscopic amounts of c-Hf3N4and of a new oxygen-bearing zirconium nitride, c-Zr2.86(N0.88O0.12)4, were synthesized at 12GPa and about 1900K using amulti-anvil apparatus. The lattice parameter of c-Hf3N4was determined to bea0=670.2(1)pm. Thea0of c-Zr2.86(N0.88O0.12)4of 675.49(1)pm was found to be slightly larger than that of c-Zr3N4(674.0(6)pm).The bulk moduli,B0, of 219GPa for c-Zr2.86(N0.88O0.12)4and of 227GPa for c-Hf3N4were obtained fromcompression measurements. Combining the compression and indentation data we determined for c-Zr2.86(N0.88O0.12)4its isotropic shear modulusG0=96GPa. Finally, Vickers microhardness, indentationfracture toughness and thermal expansion of c-Zr2.86(N0.88O0.12)4were measured
T2  - 16th International Conference on Solid Compounds of Transition Elements
CY  - 26 Jul 2008 - 31 Jul 2008, Dresden (Germany)
Y2  - 26 Jul 2008 - 31 Jul 2008
M2  - Dresden, Germany
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000267721800015
DO  - DOI:10.1016/j.jallcom.2008.10.011
UR  - https://bib-pubdb1.desy.de/record/89409
ER  -