氣相燒結 的英文怎麼說
中文拼音 [qìxiāngshāojiē]
氣相燒結
英文
vapor-phase sintering-
As a comparison, ba1. 03ce0. 8gd0. 2o3 - was synthesized by sol - gel method. among these samples, nonstoichiometric samples were synthesized for the first time. the research work involved : the crystal phase of the sinters were determined by xrd ; ionic conduction under different experimental atmospheres was measured by gas concentration cells ; performances of hydrogen - air fuel cells with the sinters as electrolytes and porous pt as electrodes were measured
用粉末x射線衍射儀鑒定它們的結晶相；在（ 600 1000 ）范圍內，以燒結體作為電解質隔膜，多孔性pt黑為正、負電極， pt - rh合金網為集電極，分別組成氫濃差電池、氧濃差電池及氫?空氣燃料電池並測定了它們的性能，研究了不同氣氛下樣品的離子導電特性及影響燃料電池性能的因素。The formation of new phase such as mullite and gahnite by solid - phase reaction in multiphase materials can benefit the sintering of materials at 1700, decreased apparent porosity to less than 5 %. reducing atmosphere inhibited the synthesis of mullite and gahnite, played a negative role in the densification of multiphase materials
固相反應生成的鋅鋁尖晶石和莫來石具有較高的活性，使復相材料在1700燒后顯示出更好的燒結性能，其顯氣孔率降低到5以下；還原性氣氛阻礙了莫來石和鋅鋁尖晶石的生成，不利於復相材料的燒結和緻密化。The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy. our results of copper and aluminum show that there are possibly different thresholds of laser energy to electronic temperature and intensities of emission spectra of laser ablated plasma. at the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among " heat reservoir effect ", " confined effect " and " s hadow effect "
認為cu等離子體羽的發光機制是由電子與粒子的碰撞傳能、電子與離子的復合形成的；隨激光能量的增加， cu等離子體特徵輻射（分立譜） 、連續背景輻射（連續譜） 、電子溫度都出現最大值；結合對al的實驗結果說明：激光燒蝕金屬產生的等離子體，其特徵輻射、連續輻射、電子溫度可能都存在一定的能量閾值；背景氣壓對激光燒蝕等離子體譜線的影響，其機理可以認為是「熱庫效應」 、 「約束效應」及「陰影效應」相互競爭的綜合結果。Ultrasonic has being attracted much attention gradually in fuel atomization because of some specialities of cavitation and infection on liquid flow. in the course of atomization of pitchy oil, especially, does it show greatly its advantage, but its material atomizational mechanism need research ulteriorly. the primary content of this thesis is about adding cantilever reed to effervescent atomizer so as to combine ultrasonic and effervescent. this thesis has discussed ultrasonic some mechanism, ultrasonic dynamical procreator, effervescent and liquid mucosity infection on atomization, at the some time we make some experiments and discuss atomization rule following some machinery parameter and run parameter so as to find some rule about ultrasonic atomization and to rich the research of ultrasonic atomization mechanism. all that will be beneficial to the design about ultrasonic atomization atomizer
超聲波由於其空化機理及對液體的流變性影響等特性，在燃油霧化燃燒中逐步引起人們的重視，尤其在重渣油等高粘度液體的霧化過程中逐步顯示出其優越性，但其具體的霧化機理還需要做進一步的研究在氣泡霧化噴嘴基礎加入懸臂式簧片哨，將超聲波與氣泡霧化相結合是本文討論的主要內容本文從研究超聲波的一些機理入手，討論了超聲動力發生器氣泡霧化以及液體粘度對霧化質量的影響，並通過具體的實驗，根據實驗數據來討論霧化質量隨各種結構參數運行參數的變化規律，以便找到超聲霧化的一些規律，豐富對超聲霧化機理的研究，對超聲霧化噴嘴的設計具有一定的指導意義。The primary theory of absorption and desorption was also explained. the effects of primary process parameters, such as hydrogen pressure, time and temperature on the magnetic properties of ndfeb have been researched. the structure and magnetic properties have been analyzed by means of optical metallographic microscopy, scanning electronic microscopy, x - ray diffraction analysis, infrared oxygen detector and magnetic properties measurement
本文設計了燒結ndfeb的氫爆制粉設備，對設備調試以及使用過程中出現的主要問題進行了簡要的說明，提出了一系列解決方法；闡述了吸氫、脫氫的基本原理；研究了氫氣壓力、通氫時間、氫爆溫度等基本工藝參數對磁性能的影響；利用金相顯微鏡和掃描電子顯微鏡， x射線衍射分析，紅外線測氧分析及綜合磁性測量儀等手段分析了材料的組織結構和磁性能。Which bring up a conclusion that the zoon model is not agree with the facts of fire experiment, hence the field model or the combined model is better for the simulation of fires in a large volume building
本文結合火災相似模型實驗研究，對中庭建築火災過程進行了數值模擬研究，建立了火區燃燒及蔓延過程與煙氣流動過程相互耦合的氣-固兩相火災模型。In the third chapter of this dissertation, based on the physical and chemical properties of hydrogen and the combustion characteristics of hydrogen, the quasi - dimension combustion calculation model of hydrogen ? fueled engine is set up through analyzing the characteristics of turbulence flame and chemical reaction kinetic of hydrogen ? air mixture. the model includes the dual ? area thermodynamics sub - model, quasi - dimensional turbulent entrainment combustion sub ? model, turbulence flame promulgating sub ? model, hydrogen - air mixture chemical kinetic sub - model and loss of heat transfer sub - model and so on
本文從氫燃料的物化特性和燃燒特徵著手，通過分析氫空氣混合氣燃燒的湍流火焰結構和燃燒化學反應動力學，基於雙區燃燒模型，建立了包括雙區熱力學、準維湍流卷吸燃燒、湍流火焰傳播速度、氫空氣混合氣燃燒化學反應動力學以及傳熱損失等模塊的燃燒模型，並給出了相應的計算方法。It has been indicated that as a pyrolysis gasification technology integrating combustion and gasification, it not only makes the fuel high - usage but also solves the problem of straw accumulation effectively by controlling operational parameters
中試試驗結果表明，該燃燒與氣化相結合的干餾氣化技術不但實現了較高的燃料利用率，而且可以通過控制運行參數等方式有效解決秸稈結團問題。Limnoa has been synthesized from self - synthesized material y - mn203 by wet moist chemical method under different sinter conditions in argon. the material was analyzed by xrd, sem. it is shown by xrd that material is limno2 single phase in 450 keeping 5h, then in 600 ? sintering 6h in argon
通過xrd物相分析發現:以自制原料y一mnzo3為錳源，在a :氣保護下，採用濕化學法，在450下，預燒結5h研磨后再於600下燒結6h ，可以合成出單相limnoz 。The experiment results show that the samples can not be sintered when the addition phases were in a very low level, and their strength and thermal shock resistance performance were neither, there were too much liquid phase created when the addition phases were in a high level, it can decrease the pore rate of the samples, and the space for structure adjusting during thermal shock, resulting in the decrease of their thermal shock resistance performance
實驗發現，當外加劑含量較少時，樣品的燒結程度低，強度不理想，抗熱震性能不好。外加劑含量過多則生成過多的液相，使樣品的氣孔率大大減小，減少了材料在熱沖擊過程中的結構調整空間，從而降低了材料的抗熱震性能。The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper. the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600, 1650, 1700 in the nitrogen atmosphere. the microstructure and the composition of the ceramics were determined by the means of x - ray, sem, micro - hardness meter etc. it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ). the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3. a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that
實驗結果表明：在碳管爐中、氮氣保護下進行燒結，添加劑為納米al _ 2o _ 3粉末時，由於納米粉末的高活性、高燒結驅動力，在1650就可使si _ 3n _ 4完全地燒結，並使其緻密度可達理論密度的96以上（比其它工藝高6左右） ；同時，納米al _ 2o _ 3地加入大大促進了長柱狀? si _ 3n _ 4的生長和發育及柱狀晶長徑比的提高，使微觀結構均勻、細化，形成了更多力學性能優異的固體? sialon相，減少了不利於陶瓷材料性能的晶間玻璃相，凈化了晶界。Many researches have showed that the mechanical properties of al2o3 - matrix ceramics in which ti ( c, n ), tic or tin was dispersed could be improved a lot, which might be widely used in the field of machining. al2o3 - matrixed ceramics were fabricated by gas pressure sintering ( gps ) and gps with post - hip based on current techniques in this experiment. for al2o3 - ticn composite ceramics, the densitification process was controlled by the mechanism of solid phase sintering.
大量研究表明：採用ti （ c ， n ） 、 tic或tin作為第二相彌散顆粒所制備的氧化鋁基復相陶瓷相對al _ 2o _ 3單相陶瓷而言，性能有了顯著的提高這類復相陶瓷性能優良，在機械加工領域有著廣泛的應用前景本實驗採用氣壓燒結（ gps ）以及gps結合熱等靜壓（ hip ）后處理兩種工藝制備氧化鋁基復相陶瓷。The experiment result showed that, in the infiltration melting the evaporation speed of si is more rapid than mo. the melting which enrich the mo reacted with the sic body and there existed mo5si3c. the content of mosi2 can be controled by adjusting the contend of c in the perform ; the content of c is more high the pore volume in composite is more high
研究發現，由於熔滲體中si的揮發速度快造成材料物相組成變化，熔滲體與sic坯體反應析出mo _ 5si _ 3c 、 mo _ 5si _ 3相阻塞坯體毛細管，使燒結體中產生氣孔。Experiment adopts a series of technology, such as expansion technology, solid burning technology, mullite crystallizing technology and anti - clarifying technology etc. through orthogonal optimized proportion and suitable accelerated burning test, experiment has successfully produced high strength and performance fly ash lightweight aggregate
研究中，採用了膨脹技術、固相燒結技術、莫來石晶化技術和反澄清保氣技術。通過配合比正交優化和適宜的快速焙燒實驗，燒制出了輕質、高強、低吸水率的優質粉煤灰輕集料。Based on analyzing sintering and infiltration processes, the effect of infiltration temperature on microstructure and properties of the material was studied when the ratio of w - cr, the porosity of green compact and the sintering process of w - cr skeleton were fixed. the differences of microstructure and properties of the composites with different composition were investigated by same sintering and infiltration processes. the composites were prepared in h2, n2, ar and vacuum conditions respectively
基於對wcr cu復合材料的燒結和熔滲過程的分析，研究了cr - w配比、壓坯緊實率、骨架燒結工藝相同的情況下，不同熔滲溫度對材料的組織形貌和性能的影響；研究了燒結-熔滲工藝相同的情況下，不同配比對材料組織和性能的影響；研究了h _ 2 、 n _ 2 、 ar和真空四種燒結氣氛下材料組織和性能的變化。In this paper, firstly, monolithic materials cosb3 and bi2te3 were prepared by sparkle plasma sintering ( sps ) respectively, and at the same time the microstructure of cosb3 and bi2te3 were studied by sem ; the seebeck coefficients and electrical conductivities of monolithic materials were measured by standard - four - probe method ( ulvac zem - 700 ) in a he atmosphere simultaneously, and their thermal conductivities were investigated by laser flash method ( tc - 7000 ) in vacuum. secondly, the junction temperature of graded bi2te3 / cosb3 thermoelectric materials was optimized based on the thermoelectric transport properties of monolithic materials, also when graded materials were used in the temperature difference ranging from 300k to 800k, the length ratio of monolithic materials cosb3 and bi2te3 were optimized in theory. thirdly, graded bi2te3 / cosb3 thermoelectric materials were prepared by two - step sps sintering, and the relationship between its average seebeck coefficients and temperature were calculated by theory mo del
均質材料cosb _ 3和bi _ 2te _ 3的電導率和seebeck系數採用標準四端子法于he氣氛下在zem - 1上同時進行測量；熱導率採用激光微擾法（ tc - 7000 ）于真空狀態下進行測量；其次，在對均質材料cosb _ 3和bi _ 2te _ 3熱電傳輸特性研究的基礎上，對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的界面溫度進行了優化；為了使結構梯度bi _ 2te _ 3 cosb _ 3熱電材料在300k至800k的溫度范圍內具有最佳的熱電性能，本研究同時對梯度結構熱電材料當中均質材料cosb _ 3和bi _ 2te _ 3材料的長度進行了優化設計；第三，通過兩步放電等離子燒結的方法制備出了結構梯度bi _ 2te _ 3 cosb _ 3熱電材料；採用理論計算的方法研究了梯度結構熱電材料平均seebeck系數和溫度的關系；同時為了驗證設計的結果，本論文對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的開路輸出電壓和熱端溫度之間的關系及梯度材料在300k至800k的溫度范圍內使用時的功率輸出進行了相應的研究。The nanometer powder had lower sintering temperature than oxide powder because of its high surface activation and the difficulty of sintering fine material because of gas transport process predominating the sinter process
納米粉體具有高表面活性，能在更低溫度下實現燒結，但同樣是因為高表面活性，使鋰揮發現象加劇，氣相傳質在燒結過程中佔主導地位，難以燒結出緻密材料。The process of the liquid phase sinter was studied, the study showed that the mo - cu sinter could gain 95 % - 97 % relative density when the relative density of the flan was 70 % - 80 %, the sinter temperature was 1100 - 1200, the sinter time was 80min - 100min and the sinter atmosphere was hydrogen
本文通過對mo - cu粉末生坯的燒結工藝研究得出，粉末生坯相對密度為70 80 ，燒結溫度為1100 1200 、等溫時間為80 120min 、氫氣保護氣氛下，可制備出具有高緻密度的mo - cu粉末燒結體。A case study of project subsequent appraisement of the off - gas treatment of lead sintering machine is given in this article, and the advance preparations, construction and completion of the project are summarized ; and the main technical and economic index are analyzed in comparison in this article. the project is graded a by use of project success appraisement chart
在此基礎上運用系統評價法對株洲冶煉集團公司鉛燒結煙氣治理項目進行了后評價，評價中對項目前期準備工作、建設實施和建成投產情況做認真的總結，對項目完成前後的主要技術經濟指標進行了對比分析，並用項目成功度評價表進行了分級評價，根據對各項目指標的相關重要性及評定等級評價，項目總評為a 。With the same sintered conditions, the relative density of sintered body was 98. 7 % at 25mpa sintered pressure and it was 91. 4 % at 12mpa. reducing heating rate enhanced the density of sample. the density was more than 98 % and had finest microstructure with a heating rate of 100 ? / min, it was 94. 8 % at 300 ? / min heating rate
相同燒結條件下，燒結壓力為25mpa的tio :燒結體的相對密度為98 . 7 % ，而12mpa的僅為91 . 4 % ;以100 / min升溫的燒結體中晶粒形貌均勻，相對密度達98 %以上，而以300 / min升溫的燒結體中晶粒形貌不均勻，部分晶粒已異常長大，有大尺寸的氣孔存在，相對密度為94 . 8 % ，當然過低的升溫速率會延長燒結時間，燒結時間的延長也會引起晶粒的快速長大。分享友人