Results 321 to 330 of about 406,295 (339)

?????????? ??-Al2O3 ???? ??????????????????? ???????????????????? ???? ?????????????????????? ?????????????????????? ???? ?????????????????? ???????????????? ?????????????????????????????????????? ??????????????

2009
?????????????? ?????????? ?????????????? ??- Al2O3 ???? ?????????????????????? ???????????????????? ???? ?????????????????? ???????????????? ?????????????????????????????????????? ?????????????? ?????? + 2 % Zn. ????????????????, ???? 30 % ???????????? ???????????????? ?? ???????? ?????????????????????? ??????????????????, ???? ???????? ????????????????
openaire   +1 more source

Surface, grain-boundary and interfacial energies in Al2O3 and Al2O3-Sn, Al2O3-Co systems

Journal of Materials Science, 1985
Using the multiphase equilibrium method for the measurement of contact angles, the surface and grain-boundary energies of polycrystalline Al2O3 in the temperature range of 1473 to 1923 K were determined. Linear temperature functions were obtained by extrapolation for both quantities between absolute zero and the melting point of Al2O3.
openaire   +1 more source

???????????????????????? ?????????????????? ???????????????????????? ?????????????? ???? ?????????????? (??-Al2O3) ?????????? ???? ???????????????? ??????????????????

2011
?? ???????????????????????????? ?????????????????????? ?????????????? ?????????????????? ?????????????????? ?????????????????? ???????????????????????????? ???????? (?????????????????????????? Rmax ?? ?????????????? ?????????????????????? ???????? F) ?????????????????? ???????????????????? ?????????????????????????????????? ???????????????????????? ????
openaire   +1 more source

Glasbildung in den Systemen CaO-Al2O3, SrO-Al2O3 und BaO-Al2O3 durch Abschrecken schmelzflüssiger Tröpfchen

1968
Um im System CaO-Al2O3 den Glasbereich zu erweitern und in den Systemen SrO-Al2O3 und BaO-Al2O3 überhaupt Gläser zu erhalten, wurden in einer Verneuil-Apparatur gesinterte, kristalline Pulver aufgeschmolzen und anschließend abgeschreckt. Dieses Verfahren läßt hohe Abkühlgeschwindigkeiten erwarten.
Frank, Berthold, Liebertz, Josef
openaire   +1 more source

In-Situ Reaction Depposition Coating of LaPO4 on Al2O3 Fabric Cloth for Al2O3/Al2O3 Composites

2008
In-situ reaction deposition, a liquid-phase coating method, was applied to coat monazite (LaPO 4 ) on alumina fabric cloth for improving the uniformity of coating. Coating was characterized for thickness, microstructure and composition by SEM, XRD and EDS. Stability of the coating was estimated by heat exposure at 1200 °C for 48 h in air.
Toyohiko Yano, Pengyuan Lee, Masamitsu Imai   +2 more
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XPS Studies of characterized Cu/Al2O3, Zn/Al2O3 and Cu-Zn/Al2O3, catalysts

1991
By XPS it is confirmed that copper-containing catalysts supported on alumina and calcined at high temperature (673-873 K for 24 h), with or without zinc addition, have a 'surface spinel' structure. Combining the XPS results with previous results obtained by Vis-UV reflectance spectroscopy and XRD we show that the limit of solubility of Zn and Cu ions ...
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Al2O3

2007
P. Villars, K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, N. Melnichenko-Koblyuk, O. Pavlyuk, I. Savysyuk, S. Stoyko, L. Sysa   +10 more
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Sapphire, Al2O3

2021
Mark Lifshotz, Alan Symmons
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XPS studies of characterized Cu/Al2O3, Zn/Al2O3 and Cu-Zn/Al2O3 catalysts-reply

1992
A reply to some comments by B. R. Strohmeier about my previous contribution on "XPS studies of characterized Cu/Al2O3, Zn/Al2O3 and Cu-Zn/Al2O3 catalysts" is presented claryfing all the points under discussion.
openaire   +1 more source

Al2O3 γ

2010
P. Villars, K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, V. Kuprysyuk, I. Savysyuk   +7 more
openaire   +1 more source