Materials Literature
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Objective To study thermo—luminescence characteristics of CaSO_4 phosphor doped with(Li, Dy,Tm) under different anneal condition so as to confirm the optimum temperature of anneal treatment,and to discover the relationship between temperature of anneal treatment,impurity and thermo—luminescence characteristics.Methods…
Microstructure and properties of the annealed TWIP steel,with cold rolling reductions of 50%,60% and 70%,were investigated by static tensile test,metallography,SEM and TEM.The results show that the microstructure of the TWIP steel before and after deformation is austenitic single phase.The TWIP steel possesses the bes…
In the presence of methylaluminoxane(MAO),2-aminopyridine Ni(Ⅱ) complexes [(2-PyCH2NAr)NiBr,Ar=2,6-dimethylphenyl(a),2,6-diisopropylphenyl(b),2,6-difluorophenyl(c)] presented highly catalytic activity for the copolymerizations of β-pinene and norbornene and afforded the copolymers with broad molecular weight distribut…
For the development of vanadium alloyed gray iron used for stamping dies,surface induction hardening process and thermal analysis were combined to study the effect of vanadium on microstructure,mechanical induction hardening properties of alloy cast iron.There was small effect of vanadium on the released latent heat f…
Nanoliposomes are a group of liposomes with diameters ranging from 10 to several hundred nanometers.Due to its special size range and the biocompatibility of liposome,nanoliposomes are extensively useful in the preclinical research and clinical application in treatment and prevention of cancer.In the review,we discuss…
On basis of electromagnetic processing principle of materials,directional solidification technology based on electromagnetic cold crucible integrates the inductive melting into electromagnetic continuous casting using a water-cooled copper crucible device is investigated.It has been with much flexibility to perform di…
Using one bath yarn-dyeing assistant of boiling off and dyeing to refine cotton yarn will not cause liquor drainage.The dye-stuff will be infused into dye-stuff directly,saving time and labor and bring considerable economic benefits.Besides,the action principle between the textile assistant and yarn-refining is analyz…
A review is given about the current status and research progress of additives for electrolyzing copper foil.It is pointed out that with continuous development of information industry,the requirements for printing circuit board(PCB) in electronics are becoming increasingly strict,so are the requirements for the additiv…
A series of bowl-shaped CTV derivatives,2,7,12-triethoxy-3,8,13-trimethoxy-10,15-dihydro-5H-tribenzo-[a d g] cyclononene(Eth-CTV),2,7,12-tripropoxy-3,8,13-trimethoxy-10,15-dihydro-5H-tribenzo-[a d g] cyclononene(Pro-CTV)and 2,7,12-trihydroxy-3,8,13-trimethoxy-10 and 15-dihydro-5H-tribenzo-[a d g] cyclononene(hydroxyl…
The carbon steel wheel hub preparing process using the lost form casting was introduced,the processes of pattle assembly,pouring system,coating and drying,pouring.etc were deeply explored and practiced.
Recent advances in hybrid molecular materials based organoimido-substituted polyoxometalates (POMs) are reviewed.Related imidoylation and C-C coupling reactions developed in our group are highlighted.
In this paper are tested the fineness CV value,yarns defects such as thin or thick places or neps,breaking strength and hairiness of Tencel/ramie blended yarn of six different blend ratioes.A regression equation of yarn property index against yarn blending ratio is established by least square curve fitting method,whic…
Combined poly(ester-ether)type finishing agent KL-WPS with chitosan,hydrophilic finish of polyester fabric was carried out.Compared with the samples treated by single poly(ester-ether) hydrophilic agent,the properties of hydroscopicity,moisture management,soil-release and anti-static of the polyester fabric treated by…
The partly graphitized C/B4C composite powder is prepared from carbon black and boric acid by carbothermal reduction reaction,the effects of heating temperature and addition amount of boric acid are investigated,the phase composition and microstructure of the C/B4C composite powder are analyzed by X-ray diffraction an…
Power supply is one of the key equipments of micro-arc oxidation(MAO) treatment,and it has important influence on MAO.This paper reviewed the effects of characteristic and parameters of power supply,such as controlling modes,current density,voltage,frequency and so on,on the property of MAO coatings,such as phase comp…
The vacuum pyrolysis pretreatment of scrap printed circuit boards(PCB) was carried out by the batch pilot-scale fixed bed reactor.The copper in the vacuum pyrolysis residues was recovered through shearing-crusher and pneumatic separator.The effects of vacuum pyrolysis pretreatment on the delamination mechanism of PCB,…
Electric field measurement method is an effective way of detecting ineffective insulators. In order to measure the electric field of insulators concisely and conveniently, and get the data for subsequence judgment, this paper introduces the hardware components, software structure and working principle of a new type of…
In order to study the behavior of sand under blast loading,the explosive tests were carried out in the explosion containment vessel(ECV) filled with sand.The test process was simulated by the finite element method software ANSYS/LS-DYNA.The dynamic response of the vessel was analyzed by 3D arbitrary Lagrangian-Euler f…
In this paper,the dyeing properties of silk fabrics degumming with pretreatment were investigated.The optimum conditions were determined through the orthogonal test and single factor influential test,compared with common alkali degumming.It appeared that the dyeing percentage of degumming silk fabrics with preteatment…
The Bi-doped aluminosilicate glasses with molar composition of 50SiO_2-xAl_2O_3-(50-x)MgO-1Bi_2O_3(x=5,10,15,20) were prepared by conventional melting-quenching technique.The broadband infrared(IR) luminescence properties of the glasses were studied.IR fluorescence centered at 1106 nm and 1 294 nm was observed under 6…