Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Emil Aulbach"'
Publikováno v:
Journal of Materials Science. 53:3296-3308
The dielectric constant and the direct piezoelectric coefficient as well as the macroscopic ferroelastic behavior of co-doped Pb(Zr,Ti)O3 were characterized from 25 to 350 °C as a function of uniaxial compressive stress. Experimental results show a
Publikováno v:
Acta Materialia. 61:6418-6427
The crack growth resistance behavior of polycrystalline Pb(Zr1−xTix)O3 has been characterized in a novel experimental arrangement between 24 and 140 °C. Experimental measurements were carried out on compact tension specimens submerged in a tempera
Publikováno v:
Acta Materialia. 61:1350-1358
The strain and polarization hystereses of lead-free 0.94Bi1/2Na1/2TiO3–0.06BaTiO3 during unipolar electric field loading are obtained from room temperature to 150 °C under uniaxial compressive stress up to 446 MPa. At intermediate temperatures a s
Publikováno v:
Sensors and Actuators A: Physical. 189:187-194
The large-signal unipolar behavior of PZT is characterized under combined electrical, thermal, and mechanical loading. Maximum strain Smax and polarization Pmax feature a pronounced sensitivity on stress with a field-dependent peak evolving at around
Publikováno v:
Scripta Materialia. 67:100-103
Blocking stress (σb) and free strain (Sf) are the most important parameters for piezoelectric actuators, both having a decisive impact on the electromechanical performance. Here, we report on the blocking stress of lead-free piezoceramics, using 0.9
Publikováno v:
Journal of the American Ceramic Society. 95:711-715
The piezoelectric coefficient of high temperature piezoelectric ceramics, denoted as Bi(Me)O3-PbTiO3, (Me = Fe, Sc, (Mg1/2Ti1/2)) was investigated as a function of temperature by using a custom-designed test frame. Utilizing laser vibrometry, it was
Autor:
Wook Jo, Jacob L. Jones, Kyle G. Webber, Josh Schmidlin, Anderson D. Prewitt, Jürgen Rödel, Emil Aulbach, Camden R. Hubbard, Thorsten Leist
Publikováno v:
Acta Materialia. 58:5962-5971
High-temperature piezoelectric polycrystalline ceramics of the system (1 − x)(Bi1−yLay)FeO3-xPbTiO3 (BF–PT), which are mixed phase in their consolidated state, have been investigated by in situ neutron diffraction during the application of unia
Publikováno v:
Journal of the American Ceramic Society. 93:2850-2856
The ferroelastic properties of a hard acceptor-doped lead zirconate titanate (PZT) ceramic are investigated between room temperature and 300°C. Comparison with a soft PZT shows that acceptor doping has a stronger influence on mechanically induced do
Publikováno v:
Ceramics International. 36:719-726
Work is aimed at preparation of Cu/Al2O3 composite by pressureless metal infiltration of porous alumina with simple vacuum equipment. Improvement of wetting by addition of Ti to Cu is investigated in sessile drop tests with various geometrical config
Publikováno v:
Acta Materialia. 57:4614-4623
The longitudinal strain and polarization of a soft polycrystalline ferroelectric ceramic (lead zirconate titanate, PZT) were measured under uniaxial compressive stress at elevated temperatures utilizing a novel testing fixture. Ferroelectric ceramics