Results 91 to 100 of about 1,656 (147)

Effect of excess PbO on phase formation and properties of (Pb0.90Ba0.10)ZrO3 ceramics

Materials Letters, 2005
Abstract Polycrystalline samples of (Pb 0.90 Ba 0.10 )ZrO 3 (PBZ) were prepared by a mixed oxide, solid-state reaction method. Excess PbO (3, 5 or 10 wt.%) was introduced prior to powder calcination to compensate for any PbO that may have been lost from the samples due to volatilisation during heat treatments.
Theerachai Bongkarn, Steven Milne, Gobwute Rujijanagul   +2 more
exaly   +2 more sources

Effect of Excess PbO on the Densification of PLZT Ceramics

Journal of the American Ceramic Society, 1989
The densification behavior and electrical properties of PLZT ceramics as a function of excess PbO in the starting powder have been investigated. The hot‐pressed PLZT ceramics, prepared from powders containing 0% to 4% excess PbO, were transparent, and their electrical properties were similar in general.
Doh-Yeon Kim
exaly   +2 more sources

Effect of excess PbO on the structure and piezoelectric properties of Bi-modified PbTiO3 ceramics

Journal of the European Ceramic Society, 2002
Abstract Effect of 1–4 wt.% excess PbO, added to the calcined powder, on the structure and dielectric and piezoelectric properties of Bi-doped lead titanate ceramics was investigated. The ceramics containing 4, 6 and 8 mol% Bi were prepared by the usual ceramic technique, using high purity oxides.
C Tănăsoiu
exaly   +2 more sources

Excess of the PBO over the ABO and hard pension freezes

Review of Quantitative Finance and Accounting, 2014
This paper examines the role of the excess of the projected benefit obligation (PBO) over the accumulated benefit obligation (ABO) in hard pension freezes. Using a sample of 109 firms that announced hard freezes during the period 2003–2008, I find that firms with a larger excess of the PBO over the ABO are more likely to hard freeze their pension plans.
Kun Yu
exaly   +2 more sources