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。
During silylation of porous glass with 3-aminopropyltriethoxysilane, the properties of the carrier affected the concentration of bound amino groups, the formation of aminopolysiloxane mono- or multilayer on the surface, and the hydrolytic stability of the layer formed. The influence of the carrier depended on the spec…
従来の電気めっき法,溶融めっき法に代わる新しいめっき法として,EB加熱方式による真空蒸着法を応用した連続蒸着試験設備により,5種類の蒸着Zn合金めっき鋼板を作製した.その結果,以下のことが明らかとなった.1)電子ビーム加熱により,近接された二つのるつぼから,Znと合金元素を同時蒸発させることによって,連続的に鋼板表面に蒸着Zn合金めっき層を形成することが可能である.合金めっきのめっき付着量及びめっき組成の制御は,電子ビームの出力,照射時間配分及びラインスピードを調整することによって可能である.2)めっき層の表面結晶状態は,合金元素の種類によって異なり,六方晶の結晶が基板に対して平行に配向するものと,斜めに配向するものとに大別された…
Abstract Atmospheric corrosion of copper can result in substantial problems for electrical interconnection in microelectronic applications. We have used x‐ray photoelectron spectroscopy (XPS) to examine the effects of benzotriazole (BTA), an organic corrosion inhibitor, on atmospheric oxidation and sulfidation of poly…
Abstract
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of orientational coupling due to nematic interaction on relaxation of Rouse chainsHiroshi Watanabe, Tadao Kotaka, and Matthew TirrellCite this: Macromolecules 1991, 24, 1, 201–208Publication Date (Print):January 1, 1991Publication History Published online1 May 2002Pub…
The problem of simulating the laying of fabric on a table is studied in this paper. The non-linear bending properties of fabric are defined by interpolating the moment/curvature relationship measured with the Kawabata system. By using a linear and a non-linear bending model, deformed fabric shapes are predicted and co…
This paper presents the results of experiments to investigate the effects of temperature on the dezincification and corrosion of 70–30 brass in 0·5 M H2SO4, Zinc and copper losses from specimens tested at various temperatures were estimated at various time intervals by atomic absorption spectroscopic analysis of the c…
Abstract Halato‐telechelic polyurethane‐ureas were synthesized from divalent metal salts of p ‐aminobenzoic acid, 4,4′‐diaminodiphenylmethane (4,4′‐methylenedianiline, MDA), dialkylene glycols, and 2,4‐toluylene diisocyanate (TDI). As the divalent metal, Mg and Ca were used, and diethylene glycol and dipropylene glyco…
There are many ongoing U.S. aerospace programs which have identified requirements for higher temperature capability from conventional titanium alloys. In order to meet these requirements, two new titanium alloys have been developed. A near alpha alloy, designated "Ti-1100" (Ti-6Al-2.7Sn-4Zr-0.4Mo-0.45Si), is a modific…
Treatment of [Mn4O2(OAc)7(bpy)2](ClO4)·3H2O (bpy = 2,2′-bipyridyl)1 with Me3SiCl in MeCN leads to a disproportionation and nuclearity change to give [Mn11O10Cl2(OAc)11(bpy)2(MeCN)2(H2O)2](ClO4)2·8MeCN 2; the crystal structure shows the core of this aggregate to comprise two [Mn4O3Cl]6+ cubane units ‘bridged’ by a near…
The $^{39}\mathrm{K}$ electric field gradient (EFG) and chemical-shift tensors have been determined in KSCN above and below ${\mathit{T}}_{\mathit{c}}$. Whereas all the data below ${\mathit{T}}_{\mathit{c}}$ are compatible with the site symmetry of the ${\mathrm{K}}^{+}$ ions given by the space group ${\mathit{D}}_{2\…
The paper describes a study of surface-charge deposition on insulating spacers under impulse-voltage conditions, using an electrode arrangement which allows scanning of the entire surface of the spacer with a capacitive probe. For a plain cylindrical spacer in SF6 at 1 bar, significant charge deposition was recorded f…
Mechanical properties of beta titanium alloys strongly depend on the precipitation behavior of alpha, which is controlled by thermo-mechanical treatments. To obtain high strength beta titanium alloys, uniform distribution of fine alpha precipitates is required, and various thermo-mechanical treatments have been develo…
High resolution 27Al magic-angle spinning nuclear magnetic resonance (MAS NMR)(78.15 MHz) spectra are reported for boehmite and pseudoboehmite and for calcines occurring in their thermal transformation sequences (involving γ, δ, θ and α-aluminas). Spectra for boehmite, pseudoboehmite and corundum (α-alumina) are fully…
The formation behavior of the alloy layer in the initial stages of galvanizing at 450°C has been investigated, using ultra low carbon Ti added steel sheet. The formation of Fe-Zn intermetallic compounds on the steel surface was retarded with the increase of Al content in galvanizing bath. For high Al content in the ba…
The domain switching of ferroelectric triglycine sulfuric acid and Rochelle salt was studied by observing optical gyration along the ferroelectric axes and measuring rotation of the indicatrices around the same axes. It was established experimentally that the antipolar domains of triglycine sulfuric acid were united b…
Small-angle X-ray scattering (SAXS) measurements have been carried out in order to investigate the size of micropores in activated carbon fibres (ACF) and the apparent change in size for different relative humidities. The scattering intensity at smaller angles and the gyration radius Rg increase at first with increasi…
Chemisorption of 2-mercaptobenzimidazole onto a chemically cleaned surface of metallic copper from its ethanol solution has been investigated by the use of surface-enhanced Raman scattering, X-ray-induced Auger spectroscopy and infrared spectroscopy. 2-Mercaptobenzimidazole reacts directly with metallic copper to form…
On addition of optically-active ammonium ions the helical pitch of cholesteric liquid crystals containing steroidal crown ethers changes in an enantioselective manner: in certain cases the difference in the colour change can be visually detected.
Reduction of 4′,4″-dinitro-o-terphenyl under conditions of high dilution, produces a mixture of macrocyclic poly(azobenzene) compounds. From the mixture, three kinds of macrocycle, namely, dimer 2{dibenzo[2.2](4,4′)azobenzenophane}, trimer 3 and tetramer 4 have been isolated pure. In toluene, absorption peaks due to t…