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。
In this article,CdS thin films were deposited on glass substrates by chemical bath deposition(CBD)technique,and the influence of solution PH value on structural properties of CdS thin films is researched.The thickness,the composition,the crystal structure and the morphology of the films were measured by step Meter,X-r…
Several heat treatment processes, such as the local weld medium frequency induction heat treatment, local weld+ full body medium frequency induction heat treatment, full pipe body medium frequency induction heating +hot stretch reducing heat treatment, online control cooling and so on were designed to study the perfor…
The effect of wetting angle on the crystal grains nucleation and detachment of vibration chilling surface made of LY12 aluminum alloy and 1Cr18Ni9Ti stainless steel respectively was investigated. The results indicate that the nucleation doesn't appear on the chilling solid surface of the stainless steel with larger we…
In order to study the influence of sodium hydroxide on the thermal hazard of cumene hydroperoxide(CHP),the thermal decomposition of CHP and CHP mixtures with different content of sodium hydroxide in the air was studied by C600 Calorimeter. CHP reacted with various concentrations of dilute sodium hydroxide as a catalys…
This study prepares micron-sized microcapsules with sandalwood essential oil wrapped in polyurethane wall material with tertiary calcium phosphate(TCP) as dispersing agent and methylbenzene-2,4-diisocyanate(TDI) and polyethylene glycol(PEG) as oil phase and aqueous phase reaction monomers with interfacial polymerizati…
the effect of different additives on the hydration of wood flour and Magnesium Oxychloride Cement mixture during 24 hours were studied,and the flexural strength and compressive strength of Magnesium Oxychloride Cement sample containing different additives were tested.The results show that the hydration process of the…
The lost foam casting process of gray cast iron box cover was simulated by using the numerical simulation method.The properties of the mould filling and solidification for lost foam casting were studied.And the comparison of the simulated results with the practical casting was carried out.The results show that the bot…
An iterative parameter design method based on leakage coefficient and magnetoresistance coefficient were presented.For each component of the hybrid magnetic bearing,structural parameters were ultimately obtained based on its leakage and magnetoresistance coefficients calculated using an iterative loop algorithm.The ca…
In order to protect the activity of aluminum powder in solid rocket propellants and increase the compatibility between the superfine aluminum pow der and the other compositions of solid propellants,the superfine aluminum pow der with activated surface and particle size about 2 μm were coated using hydroxyl-terminated…
Mn-Ce /TiO2 catalyst prepared by a novel co-precipitation method was studied.The results showed that Mn-Ce / TiO2 catalyst exhibited high SCR activity at low temperature and NO conversion of 92% was attained under the condition of reaction temperature 120 ℃ without the existence of SO2 in the flue gas.The SO2-poisoned…
TC4 titanium alloy was employed to investigate the effect of shot-peening coverage(SPC) on surface integrity,such as surface morphology,surface roughness,residual stress and microstructure after 200℃/1h heat treatment.The results show that the average roughness Ra,root-mean-square roughness Rq and the value of compres…
During the investigation of diatoms from Xingkai Lake,more than one hundred samples were collected and studied.Totally,7taxa from Cymbellaceae and Gomphonemataceae were newly recorded in China.They are:Cymbella peraspera Krammer,Cymbopleura cuspidata(Kutzing)Krammer,Encyonema obscurum var.alpina Krammer,Encyonema sile…
In order to realize automatic fabric defect detection,Mallat algorithm has been used to implement wavelet decomposition of a fabric image.According to fabric texture's structure characteristics,five eigenvalues,namely the energy,entropy,extreme difference,variance and inverse difference,were extracted from weft sub-im…
Using general nodularizer(FeSiMg8RE3) and low Mg nodularizer(FeSiMg6RE2) to treat cast iron,respectively,the effects of the amount of magnesium in nodulizer on the chemical composition of ductile iron were analyzed.The results show that,after spheroidization treatment with general nodularizer,the final residual magnes…
Hydrotalcite-like compounds,also called as layered double hydroxides(LDHs),are a kind of typical materials with layered structures.Because of its flexible character of layer composition and layers of exchangible anion,LDHs has important application value in many fields.This paper,based on LDHs′ application in field of…
The novel SPEEK composite membranes used in the electrosynthesis of ammonium persulfate were made to decrease energy consumption and improve current efficiency.By testing the membrane's electrolytic properties,mechanical properties and corrosion resistance of the supporting layer,it is found that the corrosion resista…
Diamonds and filler are pre-bonded by hi-frequency induction heating in rotary way,and then are made into brazed diamond mounted point. Test results indicate that the diamond and the filler,as well as the filler and the matrix,are metallurgically bonded. When grinding household ceramic tiles with diamond mounted point…
The corrosion inhibition performance of ATMP,HEDP,EDTMP,DTPMP,HPAA,PBTC on the carbon steel in the acidic conditions was evaluated by the weight- loss method,and the corrosion mechanism of organic phosphonic acid was studied with the electrochemical polarization curve method.The results show that DTPMP,HEDP,ATMP,PBTC…
The shearing strength of welded rotor welded joint for 1 000 MW nuclear turbine by the micro compression-shear method,the relationship between shearing strength and yield strength was determined by the homogeneous parent metal fitting,so the micro-region yield strength of the whole welded joint was obtained.The numeri…
The apparent viscosity and its affecting factors of the semi-solid slurry of 7075 alloy were studied through a Couette-type viscometer during continuously cooling process. The differential scanning calorimetry(DSC) was performed to examine the solid fraction at different temperature. The results show that the apparent…