Struktur und Farbigkeit von P,P?-Tetra-t-butyl-und P, P?-Tetraphenyl-oxals�urediphosphid und Derivaten

Zirconia-toughened alumina (ZTA) ceramics

“…Becher [65] studied the transient thermal stress behaviour of ZTA. The sizes of alumina and Zirconia grains for his composites which were fabricated by hot pressing were ~ 5 and 0.6#m, respectively.…”

Influence of ZrO2 Content on the Performances of BN‐ZrO2‐SiC Composites for Application in the Steel Industry

“…This means that the critical temperature difference (DT c ) is more than 1100°C, according to the definition of DT c as described in ASTM C1525-04. 23,24 On the contrary, Z40 shows a sharp decline in residual flexural strength when temperature difference is more than 400°C. The DT c of Z40 is only about 520°C, which is less than other composites as shown in Fig.…”

Synthesis and reactivity of cyclopentadienylhafnium phosphido complexes. Hydrogenolysis and carbon monoxide insertion for Hf-PR2 bonds

“…This stability is derived in part from the flexible nature of the (µ2-2) linkages, which can accommodate a range of metal-metal bonding and nonbonding distances. 43 On the other hand, Geoffroy and co-workers5 have pointed out that in some cases, phosphide bridges are susceptible to coupling with alkyl, hydride, and carbene ligands, so that they may not be as chemically inert as had been generally believed. In mononuclear compounds, terminal phosphide ligands2•6•7 may function as either one-electron or three-electron donor ligands, thus stabilizing coordinatively unsaturated complexes, while at the same time providing an incipient vacant coordination site.…”