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。
Advanced Processing Concepts for Increased Ceramic Reliability Processing of Silicon Nitride Powders Wet Forming Processes as a Potential Solution to Agglomeration Problems Processing of Electronic Ceramics Processing of Ceramic Composites Injection Moulding of Fine Ceramics Electrophoretic Deposition as a Processing…
A new ceramic‐metal composite with continuous interconnected ceramic and metal phases has been fabricated from sintered aluminum nitride infiltrated with aluminum metal. A dense, lightweight, hard material with high strength has been obtained. Advance of the infiltration front was linear with time. The activation ener…
Recently, we presented a self-consistent field theory for the adsorption of block copolymers [O. A. Evers, PhD Thesis, (Wageningen, 1990)]. The physical background of this theory is briefly reviewed and a number of results on the adsorbed amount and the hydrodynamic layer thickness of adsorbed di- and tri-block copoly…
The photophysical properties of tetrakis(4-sulfonatophenyl)porphyrin (H2TSPP), its tin (IV) complex (SnTSPP), aluminium(III) trisulfonatophthalocyanine (AIPCS), and the corresponding zinc(II) complex (ZnPCS), have been measured in H2O, D2O, and upon binding to human serum albumin (HSA). The triplet excited states of t…
The potassium salt of the new mixed-polyoxotungstate anion [Eu3(H2O)3(SbW9O33)(W5O18)3]18–(1) has been prepared from WO3, Sb2O3, Eu(NO3)3·6H2O, and KOH in water and isolated in crystalline form as K15H3[Eu3(H2O)3(SbW9O33)(W5O18)3]·25.5 H2O. It crystallizes in the monoclinic space group C2/m, with a= 30.250(7), b= 18.5…
Abstract The grafting of maleic anhydride (MAn) to low density polyethylenes (PEs) dissolved in 1,2‐dichlorobenzene (DCB) has been studied. Grafting was successful at temperatures of about 160°C both in air without initiator and under nitrogen with the radical initiator 2,5‐di( t ‐butylperoxy)‐2,5‐dimethyl‐3‐hexyne (L…
Carbon K -edge X-ray absorption near edge structure (XANES) spectra of evaporated films of poly- p -phenylenes and polyacenes were measured by use of synchrotron radiation. Only one dominant resonance associated with a Cl s -to-π* transition was observed for each poly- p -phenylene, although there should exist several…
The friction and wear properties between a smooth oxide-based ceramic sliding and an amorphous carbon surface are greatly influenced by the surface chemistry of the carbon layer. Like most carbon compounds, surface oxides can form if the surface is exposed to oxygen. These surface species can desorb as carbon monoxide…
At equilibrium thin films of symmetric diblock copolymers exhibit a morphology where the lamellar microdomains are oriented parallel to the external surfaces. Interference microscopy has been used to investigate this orientation which results in a quantization of the film thickness. Solution cast films of the symmetri…
The detailed nitrogen adsorption isotherms of activated carbon fibres (ACFs) and molecular sieving carbons (MSCs) at 77 K with or without pretreatment have been gravimetrically measured using a computer-controlled apparatus. These microporous carbons have also been examined by powder XRD; the crystallite size and crys…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChain length and the cosolubility of n-paraffins in the solid stateDouglas L. DorsetCite this: Macromolecules 1990, 23, 2, 623–633Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Published inissue 1 January 1990https://pubs.acs.org/doi/10…
The B2\ ightleftarrowsB19 and B19\ ightleftarrowsB19′ transformations in a ternary 50Ti-40Ni-10Cu (at.%) alloy were investigated by means of electrical resistivity measurements, differential scanning calorimetry and constant load thermal cycling tests, and they were compared with the B2\ ightleftarrowsR and B2\ ightle…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvolution of structure and viscoelasticity in an epoxy near the sol-gel transitionDouglas Adolf, James E. Martin, and Jess P. WilcoxonCite this: Macromolecules 1990, 23, 2, 527–531Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Published…
Abstract
In the phase transition from the paraelectric smectic A to the antiferroelectric SmC A * phase via the ferroelectric SmC * phase in MHPOBC, the existence of a subphase, SmC α * , between SmA and the normal SmC * (SmC β * ) was confirmed in addition to that of another subphase, SmC γ * , between SmC * and SmC A * by me…
Instrumental settings for determination of illite/muscovite ‘crystallinity’(half‐height width of the 10‐Å X‐ray diffraction peak) and the limits of the anchimetamorphic zone adopted by various authors fall into several groups. The variation in the limiting peak widths between the authors that have adopted Kubler's Neu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanisms of reactions of iron(III) porphyrins with hydrogen peroxide and hydroperoxides: solvent and solvent isotope effectsTeddy G. Traylor and Feng XuCite this: J. Am. Chem. Soc. 1990, 112, 1, 178–186Publication Date (Print):January 1, 1990Publication History Published o…
Diamondlike a-C:H films have been deposited by plasma decomposition of C2 H2. 50 samples were prepared with a systematic variation of the deposition parameters: the substrate bias voltage was between −100 and −1400 V and the C2 H2 gas pressure was between 4×10−4 and 2.6×10−1 mbar. The following properties of the films…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.beta.-Agostic interactions in (C5H4Me)2Zr(CH2CH2R)(PMe3)+ complexesRichard F. Jordan, Prudence K. Bradley, Norman C. Baenziger, and Robert E. LaPointeCite this: J. Am. Chem. Soc. 1990, 112, 3, 1289–1291Publication Date (Print):January 1, 1990Publication History Published on…
Electron-beam deposition inside scanning electron microscope (SEM) is used to prepare a new scanning tunneling microscope (STM) tip [electron-beam deposited (EBD) tip] which has a submicron diameter and a long straight sidewall. An EBD tip as small as less than 0.1 μm in diameter can be formed with careful beam focusi…