Materials Literature
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The texture vectors, as the fundatnental elements of the vector method (VM), are usually determined by the Durand's iterative method. In present paper, the texture vector is derived by two kinds of the maximum entropy method (MEM), which choose pole figure data (MEM(I)) and the series coefficients of pole figures (MEM…
The possibility of using Pb-electroplated reticulated SiC as the positive current collector for lead-acid batteries was investigated. Reticulated SiC with two aperture sizes (3 and 2mm) were tested as the substrate of positive electrode. It was found that the reticulated SiC has an excellent corrosion resistance in H2…
The microscopic structure change rule in high speed steel (HSS) after an additional cryogenic treatment was studied in this paper. Highly dispersed nano-carbide (η-Fe2 C)separated from tempering martensite was found distributed on twin planes of martensite and dislocation places. Retained austenite was found sheared i…
The influence of the surface galvanic effects of 1Cr13 SS during cavitation damage hasbeen investigated in NaCl solutions. The results show that the solution concentrationand area ratio of bubble unacted surface to the bubble-acted surface greatly influencethe cavitation damage of the alloy. The surface galvanic effec…
Our previous investigation examines the soperplastic behavior of an extruded Ni-28.5Al-20.IFe alloy. Its tensile properties were determined at temperature from 1123Kto 1323K and initial strain rates from 1.0{x 10-2s-1 to 1.04x 10-4s-1. A maximumelongation of 233K was obtained at 1123K and a strain rate Oj 5.2x 10-4s-1…
为合金燃烧性的测试被使用 CO//2 激光执行。430 瓦特和 6 公里直径激光点在正常气压和温度以内在样品上直接侵犯。结果证明非烧的钛合金的点火时间在八检验的钛合金是最长的，并且是乘 TC4 合金的长度的 3.5。非烧的合金的燃点是 2991 度 C，并且比由 1976 度 C 的 TC4 合金的高。在高温度和富有的氧的条件上，合金的表面形成起氧屏蔽，热屏蔽和燃烧产品屏蔽的作用的融化的层。这是燃烧抵抗的机制。(编辑作者摘要) 5 个裁判员。
Larger amount of austenite could be retained in an intercritically heat-treated bainitetransformed steel. The elongation and the strength-ductility balance of the steel could be enhanced considerably due to strain-induced martensite transformation and transformationinduced plasticity (TRIP) of retained austenite. The…
Hydrogen permeation behavior of corroding pipeline steel of API X56 in sea-mud was studied by using Devnathan-Stachurski Double cell technique. The study showed that the culturing cycle of sulfate reducing bacteria(SRB) in sea-mud can be divided into 4 periods:rapid growing period,steady growing period,declining perio…
The correlation of electronic structure to corrosion inhibition properties of aniline derivatives was studied in terms of semi-empirical quantum chemistry calculation. The results showed the protenated amino species of the p-substituted anlines to be the active part which could combine with metal. A mechanism of inhib…
By means of SEM and TEM examination,metal dusting behaviors have been investigated in CO+H 2 syngas for GH600 and another Ni-base supperalloy on which a dense oxide scale can generate.The results showed that local destruction of oxide scale was the beginning of metal dusting,the formation of graphite filaments and pit…
Compound ceramic coatings on TC4 alloy were prepared by pulsed bi-polar micro-plasma oxidation in NaAlO_2 system.The results show that the ceramic coating was composed of Al_2TiO_5,α-Al_2O_3 and rutile TiO_2,of which Al_2TiO_5 was the main crystalline.The content of rutile TiO_2 increased with depth from the surface,w…
The inhibitive effect of compound corrosion inhibitor for carbon steel in natural seawater was studied by weight loss method.The inhibitory mechanism was analyzed by polarization curves and EIS.The results showed that the critical concentration was 280mg/L and the inhibitive efficiency was 93.8% without pre-filming pr…
ZnS-Diatnond cotnPOsites (ZnS/D) were fabricated by hot pressing to obtain a ZnS ithered transparent materials with incmeed toughness. The relations of the mechanical properties and the diomond contents were investigated. It was determined that,when the content of diamond is in the mnge hem 1% to 10%, the toughness of…
A computation approach using wavelet transformation and artificial neural network(ANN) to analyze and quantify the atmospheric corrosion of zinc by corrosion morphology image is described.A scanner is used to obtain the corrosion morphology images of zinc samples.Multi-resolution wavelet analysis is performed on the s…
The composition and structure of passive films formed on Ti-15Mo alloy under anodic polarization in 1 mol/L and 4 mol/L HC1 solutions at 70℃ were investigated by XPS and electrochemical techniques. It was found that the passive film was composed of an outer layer and an inner layer. The outer layer formed at less nobl…
The oxidation behaviors of Ag-In alloys with different indium content were studied at different oxygen partial pressure controlled by an oxygen pump system.It is shown that both In 2O 3 particles and nano-size fibres can form on the surface of Ag-In alloys at different conditions:P O 2 =0.21×10 -5 Pa and 550℃,at which…
Double glow discharge is applied to pure copper substrate to obtain titanizing alloying layer.The high temperature oxidation resistance of the plasma titanizing samples at 400℃ and 700℃ was investigated.The oxidation kinetics curve was worked out.The morphologies of oxidation surface were observed and analyzed with a…
The influence of Cl-, SO , PO and CrO anions on the nucleation, growth and repassivation rates of metastable pitting of an amorphous alloy was studied using potentiostatic polarization method.During the repassivation period of metastable pits, the relation between current and time followed Imax I = R(t -tmax), with th…
The phase component and Curie tempemture of Nd4(Fe1-xCrx)77.5B18.5 (0 x 0.25) alloys have been studied. X-ray diffraction analysis shows the presence of α-Fe and Fe3B phases in the samples with x 0.1 and the presence of α-Fe, Nd2Fe14B and Fe2B phases in the samples with x 0.1. The magnetic measurement shows that Curie…
The potentiodynamic and electrochemical impedance techniques were employed to study the electrochemical characteristics of CO 2 corrosion of two kinds of well tube steels with corrosion scales.The results showed that after corrosion scale formed on well tube steels,corrosion current density would decrease observably,t…