Materials Literature
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It is stipulated in the national standard of hot dipped GI product that the thinnest coating layer can be 80g/m2(double sides).When customers need products with coating layer less than 80g/m2(double sides),they can only choose expensive electrogalvanzing product.This article attempts to present how ultra thin GI produ…
Basic principles of doping modification of MgTiO3-based microwave dielectric ceramics are expounded.The selection rules ofτf compensators and low-temperature sintering additives are systematically introduced,and the additives used in MgTiO3-based microwave dielectric ceramics and their influences on the properties of…
On the basis of corrosive environment of atmospheric and vacuum distillation unit,a kind of efficient corrosion inhibitor HS-1 with high acidresistivity is synthesised and compared with corrosion inhibitor HS-2 and corrosion inhibitor HS-3 which are used currently in oil refinery.Through the static and dynamic coupon…
The nodular graphite cast irons with the same chemical composition but different microstructure were made by the heredity of raw materials.The effects of low temperature heat treatment on the different microstructure of graphite were studied.The results show that after the low temperature treatment,the nodularization…
The comprehensive utilization of carbon dioxide is the maj or issue related to human and environment.In this paper,aliphatic urethane diols was firstly synthesized from ethylene carbonate,which is the derivative of carbon dioxide,and 1.6-diaminohexane.Then aliphatic polycarbonate p oly(urethane-urea)s elastomers were…
In order tosimulate the radiation signal of negative corona discharge on aircraft discharge brush in ground test,the initial stages of negative corona discharge of aircraft discharge brush and needle-plate configuration respectively is presented.Numerical calculation is carried out to obtain the discharge threshold vo…
As one of the most important cytotoxic agents,docetaxel(DTX) has good effect on many kinds of cancer in clinic.However,the side effects caused by DTX and its solvent have considerably overshadowed its clinical use.To solve this problem,studies on application of nanocarriers in delivery of DTX have been widely concerne…
Curing behavior of polyether amine/phenolic amine-epoxy resin system was studied using DSC at heating rates of 5,10,15 and 20 ℃/min from 25 ℃ to 230 ℃,and the curing states were analyzed in different heating rates.At last,initial curing temperature,maximum curing temperature,and terminal curing temperature were calcul…
In order to enhance the surface property of the carbon fiber,the carbon fiber surface was dealt with the acetone and nitric acid and its mixture in the experiment.Then the morphological structure of the carbon fiber was observed through SEM,and the changes of the surface functional groups of carbon fiber were analyzed…
Objective To investigate the ultrastructure change of infarcted myocardium after porcine iPS cells transplantation on myocardial infarction( MI) induced by ischemia-reperfusion in a swine model. Methods The MI model was created by a 90-minute occlusion of the left anterior descending artery,iPS cells or PBS were injec…
Tests of corrosion resistance of bainitic steel have been conducted for bainitic steel and 09CuPCrNi steel by periodically infiltrated corrosion tests.The results indicate that corrosion resistance performance of bainitic steel is almost the identical with that of 09CuPCrNi.The microstructure and rust layers of both s…
The influence of factors such as HF contents,HCl contents,leaching time,silicon powder particle size on the calcium removal in the HF-HCl leaching agent system was researched.And the research results showed that the HF contents was the main influential factors,the calcium removal rate could reach 84.5%under the optima…
The micro-channel plate(MCP) is one of the key components in the third generation lowlevel -light imaging tube.The MCP film can prevent the feedback ion collision to negative-electronaffinity (NEA) photocathode,but it may weaken photoelectron energy and reduced the number of photoelectrons incident to the MCP.We study…
Hollow spherical aluminum hydroxide powder was synthesized by hydrothermal method using aluminum sulfate as raw material and urea as precipitation agent on certain proportion of alcohol-water and after a certain drying treatment.The microstructure,thermal decomposition and the crystal transition process of the obtaine…
In order to develop more convenient antibacterial material which can be employed to work efficiently in weak indoor light instead of any artificial light irradiation,C,Co doped mesoporous TiO2(C,Co-MTiO2) with anatase crystalline structural wall has been prepared by direct incorporation pathway by applying 1-dodecylam…
A kind of thermally conductive and electrically insulating composites were obtained from mixture of flake graphite,silicon carbide whiskers,alumina particles and polycaprolactam(PA6) by melt blending using a twin-screw extruder,and then samples were prepared by compression molding.Morphology,thermally conductive prope…
The effect of five different kinds of pipes on viscocisy loss of polyacrylamide displacing agent with the concentration was studied in this paper.The results showed that the seamless steel pipe of 20# and the pipe with corrosion protective coating had greater influence on the viscosity loss of polyacrylamide displacin…
Rare earth borides have good mechanical,thermal and electrical properties,especially have small work function,high hardness,high melting point,high conductivity,high Yang's modulus,good thermal stability and good chemical stability.They can meet the requirements of lower turn-on voltage,lower threshold field,high fiel…
Viewing the development statue of IGCC,the advantage of IGCC compared with the conventional coal power generation was introduced by contrasting the pollutant discharge index and overall thermal efficiency,as well as analyzing its causes.The research on the engineering practice of the IGCC power generation of 200 MW an…
This study experimentally evaluates the use of compact tension specimen(C(T) specimen) to determine the master curve reference temperature,T0,for the homemade 508-Ⅲ forging of a homemade reactor pressure vessel. The design for the front face of the C(T) specimen was modified such that the specimen can be conveniently…