Materials Literature
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Summary A new synthesis of Mg-Al double hydroxides is described, that gives products relatively low (0.8–1.0%) in CO 2 . The general formula [Mg 1−x Al x (OH) 2 ][(OH) x (H 2 O) 0.81−x ] with 0.23 ≤ x ≤ 0.33 is proposed. Cell parameters and thermal data are given. The c -axial length decreases with Al-content; this is…
Eleven porcelain-fused-to-metal bond tests were analyzed for interfacial shear stress distribution using finite-element stress analysis. Stress concentration effects are significant in ten of the 11 tests. A high probability of tensile failure within porcelain or the interfacial region was found in eight of the 11 tes…
For the formation of nonohmic ZnO ceramics based on the system ZnO-Bi 2 O 3 -Sb 2 O 3 , the reactions on heating (→) and on slow cooling (←), 2PY+17ZnO\xleftarrow\xrightarrow950°∼1050°C3X zso +3Bi 2 O 3 [L] \ding"C0, and X zso \xleftarrow\xrightarrow\gtrsim1300°CSP \ding"C1, play important roles, where PY is Zn 2 Bi 3…
Abstract Calibration of the internal and external signals appearing at g eff ∼4 in the electron paramagnetic resonance (EPR) spectra of twenty-four kaolinites, has led to the recognition of two types of kaolinite-iron. The amount of iron associated with the internal signal (I iron) shows good inverse correlations with…
X-ray dichroism is observed in crystalline vanadyl bisacetylacetonate, VO2+.2(C5H7O2)-, near the vanadium K edge in absorption experiments with linearly polarized synchrotron radiation. The Kossel structure is polarized as a result of the symmetries of molecular orbitals in this strongly anisotropic molecule. The exte…
J N Sherwood (ed) 1979 Chichester: John Wiley xxvi + 383 pp price £19.50 It is a common phenomenon that crystals made of essentially spherical molecules, e.g. CCI 4 , undergo several phase transitions as the temperature is raised towards the melting point. The higher temperature phases are usually orientationally diso…
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The elastic constants measurements have been made for the first time on a single crystal of the near-equiatomic NiTi alloy. The results show that the elastic constants C′ and C44 both have a low value and a positive slope with temperature; this behavior makes NiTi unique in the class of alloys showing a martensitic tr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Interpretation of the Glass Transition Temperature of Polymer-Diluent SystemsT. S. ChowCite this: Macromolecules 1980, 13, 2, 362–364Publication Date (Print):March 1, 1980Publication History Published online1 May 2002Published inissue 1 March 1980https://pubs.acs.o…