Journal of the American Ceramic Society

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Role of Water Vapor in Crystallite Growth and Tetragonal‐Monoclinic Phase Transformation of ZrO2
Journal of the American Ceramic Society - Tập 66 Số 3 - Trang 196-200 - 1983
Yuko Murase, Etsuro KATO
The role of water vapor in crystallite growth and the tetragonal‐to‐monoclinic phase transformation of ZrO2 was studied using three specially prepared samples: an ultrafine powder of monoclinic ZrO2 obtained by hydrolysis of ZrOCI2, an aggregated powder of tetragonal ZrO2 obtained by thermal decomposition o...... hiện toàn bộ
Reinvestigation of the Solidification Point of CaO by Digital Pyrometry
Journal of the American Ceramic Society - Tập 69 Số 10 - 1986
Toyoaki YAMADA, Masahiro Yoshimura, Shigeyuki Sōmiya
The solidification point of calcia which has been distributed by the Commission on High‐Temperature and Solid‐State Chemistry of the International Union of Pure and Applied Chemistry was measured by digital pyrometry using an arc imaging furnace. The solidification point was determined to be 2899°C with ±3°C as the standard deviation for this sample. The reliability of this solidification ...... hiện toàn bộ
Crack Stability and Its Effect on Fracture Toughness of Hot‐Pressed Silicon Nitride Beam Specimens
Journal of the American Ceramic Society - Tập 79 Số 9 - Trang 2300-2308 - 1996
Isa Bar‐On, Francis I. Baratta, Kyu Cho
The effect of stable crack extension on fracture toughness test results was determined using single‐edge precracked beam specimens. Crack growth stability was examined theoretically for bars loaded in three‐point bending under displacement control. The calculations took into account the stiffness of both the specimen and the loading system. The results indicated that the stiffness of the t...... hiện toàn bộ
A far‐red‐emitting (Gd,Y)3(Ga,Al)5O12:Mn2+ ceramic phosphor with enhanced thermal stability for plant cultivation
Journal of the American Ceramic Society - Tập 103 Số 9 - Trang 5157-5168 - 2020
Xuting Qiu, Zhaohua Luo, Haochuan Jiang, Hui Ding, Zehua Liu, Xiaopu Chen, Jingtao Xu, Jun Jiang
AbstractAs for plants, far‐red (FR) light with wavelength from 700 nm to 740 nm is critical for processes of photosynthesis and photomorphogenesis. Light‐controlled development depends on light to control cell differentiation, structural and functional changes, and finally converge into the formation of tissues and organs. Phosphor converted FR emission under LED e...... hiện toàn bộ
High‐Temperature Oxidation of Molybdenum Disilicide
Journal of the American Ceramic Society - Tập 49 Số 4 - Trang 173-177 - 1966
C. D. WIRKUS, D.R. Wilder
The oxidation of MoSi2 in air at atmospheric pressure was studied by electron diffraction, X‐ray diffraction, and thermogravimetric analyses. The oxidation process occurs in two parts: (1) formation of MoO3 and SiO2 at temperatures below the boiling point of MoO3, and (2) formation of Mo5... hiện toàn bộ
Polyol Synthesis and Investigation of Ce1−xRExO2−x/2 (RE = Sm, Gd, Nd, La, 0 ≤ x ≤ 0.25) Electrolytes for IT‐SOFCs
Journal of the American Ceramic Society - Tập 98 Số 2 - Trang 501-509 - 2015
Göknur Dönmez, Vedat Sarıboğa, Tuba Gürkaynak Altınçekiç, M.A. Faruk Öksüzömer
In this study, we aimed to examine the effect of dopant type and concentration on the ionic conductivity of ceria‐based electrolytes. Ceria electrolytes doped with samarium (SDC), gadolinium (GDC), neodymium (NDC... hiện toàn bộ
Depolymerization of GeO2 and B2O3‐GeO2 Network Glasses by Sb2O3
Journal of the American Ceramic Society - Tập 56 Số 6 - Trang 303-309 - 1973
E. F. Riebling
Binary Sb2O3‐GeO2 glasses containing 45 mol% Sb2O3 and ternary Sb2O3‐B2O3‐GeO2 glasses containing 50 mol% GeO2 were prepared. Their densities (volumes), refracti...... hiện toàn bộ
Infrared Spectra and Atomic Arrangement in Fused Boron Oxide and Soda Borate Glasses
Journal of the American Ceramic Society - Tập 38 Số 10 - Trang 370-377 - 1955
Scott Anderson, Robert L. Bohon, D. D. Kimpton
The infrared absorption spectra of fused B2O3 and of a series of soda borate glasses are presented. These spectra were obtained using vacuum‐pressed briquettes of the powdered glass and powdered KBr. The spectrum of fused B2O3 shows quite definitely that this glass does not consist of a completely continuou...... hiện toàn bộ
ULTRALOW‐EXPANSION CERAMICS IN THE SYSTEM NA2O‐ZRO2P2O5‐SIO2
Journal of the American Ceramic Society - Tập 67 Số 5 - 1984
James Alamo, Rustum Roy
Compositions in the series Na1+xZr2P3‐xSixO12 and Na1+4zZr2‐zP3O12, where x = 0≤x≤1 and z=0≤z≤1/2, have thermal expansions that can be controlled (by selecting the composition) to va...
Thermal Expansion Behavior of NaZr2(PO4)3Type Compounds
Journal of the American Ceramic Society - Tập 69 Số 1 - Trang 1-6 - 1986
Toshitaka Oota, Iwao Yamai
The thermal expansion of the skeletal framework was essentially zero for NaZr2(PO4)3‐type compounds; the interstitialion, e.g., Na+, was primarily responsible for the total thermal expansion. The composition dependence of the thermal expansion is discussed in terms of the amounts, crystallographic sites, an...... hiện toàn bộ
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