Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The present oxidation study covers the 780°–1150°C temperature range using 0.001 Ω‐cm Si which is heavily B‐ and P‐doped Si in dry . Emphasis is on the lower temperatures thereby extending the scope of already published studies. For 0.001 Ω‐cm Si at temperatures greater than 1000°C, the over‐all oxidation rates were f…
Abstract The structure–property relationships of polyurethane elastomer derived from liquid hydroxylterminated polybutadiene/low molecular weight aliphatic diol/diisocyanate system were studied. The effects of the amount of low molecular weight diol on the mechanical properties of elastomer were discussed on the basis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWater-soluble lanthanide porphyrins: shift reagents for aqueous solutionWilliam DeW. Horrocks Jr. and Emmanuel G. HoveCite this: J. Am. Chem. Soc. 1978, 100, 14, 4386–4392Publication Date (Print):July 1, 1978Publication History Published online1 May 2002Published inissue 1 J…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical and solid state studies of phthalocyanine thin film electrodesHiroyasu Tachikawa and Larry R. FaulknerCite this: J. Am. Chem. Soc. 1978, 100, 14, 4379–4385Publication Date (Print):July 1, 1978Publication History Published online1 May 2002Published inissue 1 J…
The energy levels of the vanadium atom in all of its stages of ionization, as derived from the analyses of atomic spectra, have been critically compiled. In cases where only line classifications are given in the literature, level values have been derived. The percentages for the two leading components of the calculate…
Wall effects on the Freedericksz transition have been calculated and used to evaluate the interfacial interactions between nematic molecules and substrates. A total reflection method was developed to observe the Freedericksz transition. Both the easy axis and the anchoring strength were measured on the interfaces betw…
Stromatoporoid cross‐sectional shape can be considered as a product of the interaction of three morphological variables: the relative proportions of basal, vertical and diagonal dimensions. The gross arrangement of internal lamination can be superimposed upon the resulting outlines. These shapes are taken to represent…
A study is presented of the liquid phase epitaxial growth of the quaternary mixed crystal Al y Ga 1 − y As 1 − x Sb x . Samples were grown over the composition range 0 < x < 0.2 , 0 < y < 0.6 , at temperatures from 785° down to 715°C, below which a miscibility gap in solid composition was observed. With the inclusion…
Abstract The energy distribution curves of the 2p core levels of pure and heavily doped Si are investigated using highly monochromatized (≈︁ 0.1 eV) synchrotron radiation (105 to 140 eV). Shifts and broadenings of the spectra with doping and with the energy of the exciting photons are observed and interpreted in terms…
Abstract The microdeformation morphology of a number of vinyl polymers with bulky side chains (type I) and arylene polymers with flexible oxygen linkages (type II) was studied by electron microscopy. The polyarylenes crazed only near the glass transition while the polyvinyls exhibited a crazing regime that extended to…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTManganese(II) porphyrin oxygen carriers. Equilibrium constants for the reaction of dioxygen with para-substituted meso-tetraphenylporphinatomanganese(II) complexesRobert D. Jones, David A. Summerville, and Fred BasoloCite this: J. Am. Chem. Soc. 1978, 100, 14, 4416–4424Publi…
Carrier binding and recombination processes at transition metal (TM) and post-transition metal impurities in solids are reviewed. The presence of low-lying empty core orbitals in these impurities introduces novel binding and recombination phenomena and leads naturally to a classification of impurity centres as ‘simple…
This paper describes a method to improve the electromigration capacity of Al-Cu or Al thin-film interconnection metallurgy by incorporating a layer of intermetallic compounds of Al and transition metals. The improvement in lifetime can be 100 times greater than comparable Al-Cu structures tested under the same conditi…
The energy loss of a pair of charges in correlated motion through an electron gas is calculated using Lindhard's dielectric function. The results of numerical integrations are presented and in particular the cases of low and high velocities are described. Analytical expressions for the energy loss are given for the ca…
The influence of borax and boric acid on the resistance of cellulose insulation to smouldering and flaming combustion has been examined using material treated by a wet application process. Boric acid has been shown to be required at an add-on level of at least 11.6 parts to 100 parts (by weight) of cellulose if resist…
The results of adhesion research clarify the role of copper and zinc in adhesion bonding and adhesion degradation. For the actual interpretation of the results, the difference between surface and average bulk composition must be considered. The tendency towards zinc enrich ment is mainly governed by the average brass…
The adsorption of copper, lead, cadmium and zinc ions by cellulose suspensions has been examined at pH values ranging from 3.5 to 11. The chemical form of the metal ions has been changed by adding ligands such as oxalic acid, citric acid, tartaric acid, ethylenediaminetetraacetic acid, ethylene- diamine, glycine, cyst…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDehydration kinetics for barium chloride dihydrate single crystalsR. Keith Osterheld and Paul R. BloomCite this: J. Phys. Chem. 1978, 82, 14, 1591–1596Publication Date (Print):July 1, 1978Publication History Published online1 May 2002Published inissue 1 July 1978https://pubs…
Microhardness of single crystals of V3Si and V3Ge as well as polycrystalline Nb3Ir, Nb3Au, and Nb3Sn have been measured. The relatively high ratio of hardness to elastic constant C44 supports the existence of strong covalency in A3B compounds of the A15 structure. Correlation with interatomic distance suggests covalen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure of Poly(hexamethylene oxamide) [Nylon 62]Y. Chatani, Y. Ueda, H. Tadokoro, W. Deits, and O. VoglCite this: Macromolecules 1978, 11, 4, 636–638Publication Date (Print):July 1, 1978Publication History Published online1 May 2002Published inissue 1 July 1978https://pub…