鐵電體性的 的英文怎麼說
中文拼音 [tiědiàntǐxìngde]
鐵電體性的
英文
ferroelectric-
Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究,內容包括: ( 1 )本文採用有限長行波面電流作用於有限長鐵芯上的模型,引用了氣隙磁場一維解,研究了單層繞組磁場,奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較,簡單介紹了二維解; ( 2 )用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析,並分析了結果; ( 3 )用軟體進行了額定電壓下的瞬態分析,得到了轉矩,位移,轉速隨時間變化曲線圖,利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較,採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證,由實驗測得了三相電流波形,並與計算結果進行了比較,對其不對稱性進行了定性分析。A detailed statement is made of the feo - the most important material for making feo magnetic material - its developing period, preparation and utilization and the feo problems existing in the metallurgical indus - try in china, a deep research is carried on a series of problems such as the adjustment of panzhihua iron and steel ( group ) cmpany industrial structure, the iron and steel industrial saturation, developing the non - steel industry, how to make use of the second resource of the large amount of feq scale, building the magnetic material industry to fill in the gaps in the field of magnetic material in panzhihua iron and steel ( group ) cmpany
論文首先闡述了磁性材料在國內外的發展動態及其在電子工業中應用的重要性,對鐵氧體磁性材料最重要的原料?氧化鐵的發展階段、制備方法、利用狀況以及中國冶金行業氧化鐵存在的問題進行了較詳盡的闡述,特別圍繞攀鋼產業結構調整、鋼鐵產業飽和、發展非鋼產業、如何利用大量氧化鐵鱗等二次資源,開發建設磁性材料產業,填補攀鋼磁性材料空白等一系列問題進行深入研究。The minimum of resistivity at low temperature range can be explained by magnetic scattering which corresponds to the peak of magnetization. all of the experimental data can be well explained on the basis of vrh model, which comes from not the clusters, but the inhomogenous magnetic background. based on the mechanism of transport, cmr effect is elucidated
體系磁性和電性的影響,通過實驗分析得出了下列結論: q ) dy對la的替代產生了無規的磁勢,破壞了mn o mn長程鐵磁序,導致在tn丁tc溫區出現團簇玻璃態,在t tn溫區,由於dy子大的磁矩, la ( dy亞晶格和mn亞晶格磁矩強烈的耦合,體系呈現反鐵磁態Domain structure and its movement determine the physical properties of ferroelectrics. investigation of domains is the precondition to study macroscopic properties of ferroelectrics
鐵電疇的結構及其運動規律直接決定了鐵電體的物理性質及其應用方向,電疇的檢測是進行鐵電特性研究的前提條件。X - ray diffraction spectrum, empa methods and several tests including mechanical properties, electrochemistry, corrosion wear, on - site plate hanging, the microstructure of steel has been observed and analyzed, performance has been studied, and corrosion - abrasion, fragility mechanism, and microalloy application in ferritic stainless steel have been explored comprehensively. the test results of electrochemistry, corrosion wear and on - site plate hanging have been analyzed. the analytical result shows that crsomo has enough corrosion resistance in phosphoric acid slurry because it has high chromium and low carbon
通過實驗室的電化學試驗、腐蝕磨損試驗和磷肥廠的現場掛片試驗結果分析,表明: cr30mo鐵素體不銹鋼高鉻低碳的配合,保證其在磷酸料漿中具有足夠的耐蝕性: cr30mo中( fe , cr ) _ 23c _ 6 、 ( fe , cr ) _ 7c _ 3 、 mo _ 2c 、等碳化物硬質點從基體的彌散沉澱析出可提高鋼的硬度和耐磨性,使得鋼在磷酸料漿中具有良好的耐磨蝕效果。Abstract : the hidden perils and troubles of safety existing in the interlocking circuit between the tipper in the raw material area and the railway signal system in wisco have been analyzed one by one and causes to their occurrence found out and the technological theory and counter measures to solve those problems comprehensively expounded and better working performance and reliability on the improved interlocking circuit achieved
文摘:針對武鋼原料區原翻車機與鐵路信號聯鎖電路存在的安全隱患和缺陷,一個一個地進行剖析,找出它們產生的根源,全面系統地論述了解決這些問題的專業技術理論及其具體的改進措施,使改進后的翻車機與鐵路信號聯鎖電路性能良好、工作可靠。An a. c. voltage of 2000 volts is applied between the winding and ground to test the integrity of the insulation between the winding and core iron
在線圈繞組和地線上加上2000伏交流電以測試線圈繞組和芯鐵之間的絕緣的整體性能。In tropical and sub - tropical area, soil solution contains large amount of hydroxy - fe ions. these hydroxy - fe ions may react with montmorillonite in soils to form fe - oxyhydioxide - monuiiorillonite complexes
它們可以和負電性的土壤礦物?蒙脫石作用生成低聚合羥基鐵?蒙脫石復合體。An anomalies in the dielectric constants and loss tangent have been observed experimentally in the ferroelectromagnet near the antiferromagnetic transition temperature, indicative of a coupling between the ferroelectric and magnetic ordering, but the nature of the mechanism of magnetoelectric coupling and the form of interaction is still an important and debated issue
而另一類是鐵電磁體,它除了具有一般磁電體的性質外,還由於固有的本徵磁有序和鐵電有序的耦合使之存在自發的磁電效應。實驗上已經發現了由於自發的磁電耦合導致的介電異常和損失正切。The fitness of four negative electrode materials such as al, fe, zn, cd, and of six membranes materials : microfiber glass mat separator, polyethylene, polypropylene, polyvinyl chloride, vinylon, soapnated cellulose acetate, and of four current collects : carbon fiber ; nickel foam ; nickel foam sthongthened by iron wire net, punched silver grid in the super - iron alkaline batteries was comparatively studied. the influence of two storaged method ( with and without electrolyte ) and two impurities ( zno, fe ( oh ) 3 ) to the experiment cell ' s self - discharge nature was also comparatively studied. at last, the nature of discharge. structure and electrochemistry of experimental cell with k2feo4 as cathode active material prepared by three different methods : high temperature reaction, hypochlorite oxidizing and electrolysis, was comparative ly studied. we can conclude : i ) the open - circuit potential and the flat of work potential and the percent of capacity of k2feo4 till 1. 0v during the discharge at constant load of experimental cells decreased by the order of al / k2feo4, zn / k2feo4, cd / k2feo4, fe / k2feo4. as for the nature of charge - discharge cycle, cd / k2feo4 fe / k2feo4 zn / k2feo4. in water solute electrolyte, although al / k2feo4 can n ' t be used as storage battery, it have great potential as primary cell or storage cell from the aspect of its discharge capacity. discharge power
採用組裝實驗電池、 x -射線衍射( xrd )和循環伏安( cv )的方法,從實驗電池的放電特性、充放電循環特性、自放電特性,不同高鐵酸鹽的結構特性和電化學特性幾個方面,對4種金屬負極材料( al 、 fe 、 zn 、 cd ) 、 6種隔膜材料(復合玻璃纖維、幅射接枝聚乙烯、改性聚丙烯、聚氯乙烯、維尼綸無紡布、皂化再生纖維素) 、 4種集流體材料(泡沫鎳、以鐵網為加強層的泡沫鎳、切拉銀網、炭纖維編織網)在堿性高鐵電池中的適用性進行了比較研究;對2種雜質組分( zno 、 fe ( oh ) _ 3 )和2類不同貯存方式(干、濕)對實驗電池自放電特性的影響進行了比較研究;對3種方法(高溫固相反應、次氯酸鹽氧化、直流電解)所制k _ 2feo _ 4的實驗電池的放電特性、結構特性和電化學性能進行了比較研究。The study on the dielectric properties of ba zrxti1 - x o3 relaxor ferroelectric
3弛豫鐵電體的介電性能研究Accordingly, a new framework, which provides a common scheme for the numerical simulation on the macroscopic behavior of ferroelectrics though multi - scale analysis on the coupled thermo - electrics - mechanical behavior of multiphase in heterogeneous material, is induced to construct the effective constitutive equation of multiphase. in chapter four, based on the law of domain nucleation and domain wall motion of 1800 domain switching, a new scheme of domain switching and numerical simulation approach is put forward on the foundation of thermodynamics. driving traction, nucleation criterion, velocity of domain wall motion, kinetic relation and rate of domain switching in a single grain are given
第四章以鐵電體1800疇變的過程中形核規律和疇界運動規律的實驗觀察結果為基礎,根據熱力學理論建立鐵電體疇變的理論框架和數值模擬方法;給出了單疇內疇變驅動力、新疇形核準則、疇界運動速度公式、疇變動力學的表達式,單晶的疇變速率公式;用細觀力學的觀點給出了對多晶鐵電體多場耦合的有效性質進行包含疇變速率影響的多尺度分析方法。In chapter one, we briefly recount some properties of ferroelectrics and review the research history, approaches and actuality in domestic and overseas
本文的第一章簡單介紹鐵電體的性質,述評了對鐵電體研究的意義,所採用的方法和研究現狀。The rate of domain switching plays an important role in the nonlinear behavior and properties that are frequency dependent. it is necessary to incorporate the rate of domain switching when multi - scale analysis of the coupled macroscopic thermo - electric - mechanical behavior of ferroelectrics is carried out
疇變具有一定速度,疇變速率對鐵電體的非線性響應和頻率相關響應等性質起到重要的作用。在對鐵電體多場耦合進行多尺度分析時,必須考慮疇變速率的影響。Polymer networks have been produced in a variety of liquid crystal phases in cells without surface treatment. the liquid crystal / monomer mixtures are prepared using a ferroelectric liquid crystal and a diacrylate monomer. the polymerisation of the monomer is carried out by uv curing the mixture when it was kept in a specific phase which can be obtained by controlling the temperature of the ferroelectric liquid crystal. both the monomer and the polymer network will depress phase transition temperatures. the effects of the polymer network on the packing arrangement of the ferroelectric liquid crystal molecules are examined by means of optical microscopy. the molecular packing arrangement of the ferroelectric liquid crystal in a specific mesogenic phase is frozen on the formation of a polymer network in the ferroelectric liquid crystal in that phase. the existence of the diacrylate based polymer network can improve the electrooptical switching of the ferroelectric liquid crystal
在灌裝于未經表面處理的樣品盒內處于不同狀態的液晶中制備聚合體網路.液晶/單體混合物由鐵電液晶和雙丙烯酸單體製成.單體的聚合通過維持該混合物處在一定的液晶態的條件下經紫外線固化來完成.不同的液晶態可通過控制鐵電液晶的溫度來獲得.雙丙烯酸單體或聚合體網路的存在會導致鐵電液晶載體的相變溫度降低.通過光學顯微鏡可觀察聚合體網路對鐵電液晶分子組合排列的影響.結果發現:在某一液晶態中鐵電液晶分子的組合排列可被在該液晶態中聚合而成的聚合體網路所穩定,雙丙烯酸基聚合體網路的存在可改良鐵電液晶的電光開關特性Organic - inorganic nanocomposite, which are the complex of inorganic nanopraticles with organic compound, is a popular study subject in nanoscale composite. the nanocomposite can not only take advantage of several advantage, but also produce new properties. in this thesis, taking account of the problems in electrorheological fluids such as high leakage current, low yield stress and stability, the pan - batio3 nanocomposite with different structure are prepared by in - situ complex technology and modified sol - gel method
根據目前電流變液中出現的問題(如屈服應力不夠高,漏電流密度不夠低,穩定性不夠好等問題) ,基於聚苯胺有較高的熱穩定性,且密度又小,特別是聚苯胺的介電常數和電導率均可按需調整,此外,鈦酸鋇無機納米粒子作為一種無機鐵電體,在電場作用下具有自發極化的能力,一方面可以為體系提供高的介電常數,另一方面又可保證體系的絕緣性能。But its high leakage current and poor retention is the main obstacle to its application. improving the quality of ferroelectric thin films and avoiding the reaction and diffusion between f - s interfaces is one of the crucial keys to overcome this problem. that is to say that the preparation and properties of ferroelectric thin films is compatible with the semiconductor integrated circuit
但是其漏電流過大和保持力差成為制約其實用化的最大障礙,攻克這一難題的關鍵之一就在於鐵電薄膜質量的進一步提高,盡量減少或者避免f - s界面的互擴散,也就是說鐵電薄膜的制備工藝和各項鐵電性能必須與半導體集成工藝兼容。The temperature dependence of dielectric constant between room temperature and 500 under 1 khz, 10khz 100khz frequency conditions were measured, it is found that the ceramics are relaxor ferroelectric. the relaxor properties are decreased by the substitution of ba2 +
測量了各樣品在1khz 、 10khz 、 100khz頻率下從室溫至500的介電溫譜,表明材料為弛豫鐵電體, ba ~ ( 2 + )的摻入使其弛豫特性有所降低。Therefore, one needs its thin films, having the same properties as the bulk ferroelectric ceramics with the rapid development of the microelectronics and circuit integration in the new century
隨著微電子技術與集成電路技術的迅猛發展,人們需要將具有大塊鐵電材料的性能的薄膜材料利用現代復合技術將不同功能的微尺度材料復合到一塊集成板上,構成具有各種優異性能的復合材料體系。Abstract : ferroelectric based nanocomposites are a new class of mesoscale functional materials which have a high dielectric constant and high electric field. recent progress in this research area is reviewed briefly, and a novel ferroelectric composite with embedded semiconductor quantum dots, including its preparation and optical properties, is reported. this material has promising applications in new electroluminescent devices and quantum dot lasers
文摘:鐵電體基納米復合材料作為一類新型功能材料,提供了一系列「高介-高場」調制的介觀系統.文章介紹了這一領域的最新研究進展,並重點報道了一類新型鐵電體基納米復合材料鐵電體半導體量子點復合材料的制備與光學性質,該材料在新型電致發光元件及量子點激光器件中有著很好的應用前景分享友人