碳化物析出 的英文怎麼說
中文拼音 [tànhuàwùxīchū]
碳化物析出
英文
carbide precipitate-
Carbon can promote the forming of carbide of fe3c mostly during the ma, while it seems that chromium makes amorphism easier. in addition, this paper also made a research on the milled powder forming technology, and presented some improvement methods
機械合金化過程中,碳元素可以促進以fe _ 3c為主的碳化物的析出,鉻元素使粉末更趨向于非晶態轉變,並使材料出現超順磁現象。Abstract : through analysis of the components of coking on different parts of desullfur system of single tower and the waste water containing sulfur, we find the cause of coking in the stripping desulur system from single tower is the polymerization reaction of carbohydrate and the separattion of varied solid powders, organic compounds, and all corrosive productions of metal out of waste water in high temperature, therefore, the solving method is how to decrease the oil content, how to depolymerize form the carbohydrate and how to antisepticize by vapour of waste water
文摘:對單塔脫硫系統中不同部位的垢物及現場催化含硫污水進行了分析測定,結果表明:塔內污垢成分及含量隨塔體部位的不同而不盡相同,單塔汽提脫硫系統中垢物的形成,主要是由於污水中所含各類粉塵、有機物、金屬腐蝕物等在高溫下因石油碳氫化合物的析出及其單體的聚合反應所致.如何降低污水中的含油成分、減少聚合反應的生成、防止污水蒸氣對塔體材料的腐蝕,是阻垢、除垢和防垢應解決的關鍵問題Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation
為解釋微合金化50crv鋼強韌化機理,本文通過對不同淬火溫度,回火溫度,回火時間下的力學性能指標的對比及顯微分析,認為微合金元素的細化晶粒,馬氏體的回火分解,殘余奧氏體的轉變,第二相的沉澱析出共同決定了微合金鋼的強韌化情況,特別是由於微合金元素的存在,其細化晶粒及其碳氮化物的沉澱析出,導致鋼的良好的強韌性,並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應,會在硬度曲線中產生明顯的二次硬化現象。Structure and precipitation morphology of microalloy carbonitride
微合金碳氮化物的結構與析出形態Moreover, the quenching concentration of eu is raised. on the basement of successful synthesis of two - components oxide, edta complexing sol - gel method was expanded and applied to effectively synthesis nanosized muti - components oxide, such as la1 - xsrx fe o3, lafe1 - xcuxo3, la1 - xsrx coo3, laco1 - xcuxo3 because edta can bind with most metallic elements of the periodic table, this technique become a versatile tool in the production and study of new nano materials of multi - component complex oxides. a economic and new process has been studied to synthesis la2o3 nanocrystalline, using nh4hco3 as precipitant
河北大學理學博士學位論文對于單一組份的稀土氧化物,探索出一條更經濟、更方便的合成方法,即:用碳酸氫錢做稀土沉澱劑,成功地制備了納米l匆03 ,並對中間產物碳酸斕及其燒成的氧化斕分別進行了ir 、 tg一dta 、 sem 、 xrd分析研究,確定了碳酸憫的組成,氧化斕的物相、結構,並發現分散劑的種類對微觀形貌有一定的影響。The author analyzes the change rules of fuel consumption and the mass of the main exhaust emission pollutants ( nox, pm, co, hc and carbon ) with the operating parameters ( speed and load ), points out that nox and pm are the primary exhaust emission pollutants which affect the turbocharge - intercooled diesel engine to reach the requires of emission regulations, and map the figure of compositive exhaust emission characteristic
分析了有效燃油消耗率及各主要排放污染物( nox 、 pm 、 co 、 hc 、碳煙)的排放量隨運轉參數(轉速n與平均有效壓力p _ ( me ) )的變化規律。指出nox與pm是影響增壓中冷柴油機排放達標的主要排放污染物,並繪制了排放綜合特性圖。這為該類型柴油機的性能分析提供了參考。Other microscopic analysis of the fibers seems to indicate that the image is strictly limited to the carbohydrate layer, with no additional layer of pigment visible
對纖維進行的其他顯微鏡分析看上去是指出肖像是嚴格地限制于碳水化合物層,並沒有額外的可見色素層面。The essential elements and process of gas reservoir formation of ordovician in ordos basin have been annalysed systematicly and scientificly by means of the theory and method of organic geochemistry and tectonic geology in this dissertation. the several advanced techniques, such as gas generation thermal simulation, on - line individual gas compounds carbon isotope determination ( py - gc - c - ir - ms ), the analysis technique of light hydrocarbons and biomarkers in natural gas, gas migration simulation and gas carbon isotope determination in fluid inclusions, have been applied to focuse on the study of the gas generation mechanism of souce rock, correlation between gas and source rock, reservoir formation history, migration direction, charging road in detail
應用有機地球化學和構造地質學理論和方法對鄂爾多斯盆地奧陶系天然氣地質研究中薄弱環節成藏要素和作用進行了系統科學分析。利用烴源巖生氣定量熱模擬技術、熱模擬在線碳同位素實驗技術、氣體輕烴和生物標志物分析技術、運聚成藏物理模擬技術和包裹體中碳同位素分析技術等多種先進的實驗技術對烴源巖的生氣機理、氣源和混合比、成藏史、充注路徑、運移方向和構造作用與成藏關系等問題進行了深入的研究,在前人研究的基礎上,經過本次大量的實驗分析和綜合研究,提出了一些新的認識。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。Microstructure of the composite layer was analyzed with help of optical microscope, scanning electronic microscope ( sem ), electronic probe microanalysis ( epma ) and x - ray diffraction ( xrd ). the compacting of the billet and the forming mechanism of the carbide reinforcement were studied based on thermodynamics and kinetics of reaction, sintering theory and the result of dta. at the same time, the wear - resistance of the composite layer was studied under condition of dry sliding friction
利用光學顯微鏡、掃描電子顯微鏡、電子探針以及x -射線衍射儀,分析了表面復合層的基體組織結構;運用反應熱力學、動力學、粉末燒結理論和燃燒合成理論,結合差熱分析結果,探討了表面復合層壓坯的燒結緻密化原理和碳化物增強相的形成機理;利用坯塊在真空燒結爐不同溫度下的燒結出來的顯微組織分析,模擬出坯塊的燒結過程中的化學反應過程。Associated with the study of lighter hydrocarbon constituent, carbon isotope, biomarker and inclusions, adopted the technique of oil source correlation on whole oil samples, it can be confirmed that the hydrocarbon source of viscous crude in permian, in the east slope of jimusaer depression, is pingdiquan formation mudstone ; carboniferous oil comes from carboniferous source rock. meanwhile, the causes of oil formation are investigated based on datum of reservior geochemistry : viscous crude of permian is the result of biodegradation and low maturity working together, and that lighter hydrocarbon constituent of carboniferous oil is missing. at last, the mode and mechanism of the oil pool formation are analysed in the study area according to the structure phylogeny, sedimentary history, and data of reservior geochemistry
本論文根據輕烴、碳同位素、生物標志化合物等資料,運用全烴地球化學油源對比方法進行油源對比,得出吉木薩爾凹陷東斜坡區二疊系的稠油來自平地泉組泥巖,石炭系的稀油來自石炭系本身源巖;同時,根據地化資料研究了原油的成因,認為二疊系稠油是生物降解和成熟度較低共同作用的結果,石炭系的稀油存在輕組分散失現象;最後,綜合構造、沉積、烴源巖和油藏地球化學資料,分析了吉木薩爾凹陷原油的成藏機制和模式。The boundary of ferrite has been clarified and fined by adding re into crsomo. the intergranular corrosion induced by solution chromium decreasing can be restrained for nb, v, ti combing carbon in the steel. the wear resistance of stainless steel can be increased for the precipitation of microalloyed carbides
其中,稀土能夠凈化鐵索體晶界,並起到變質劑的作用,細化鐵素體晶粒,改善不銹鋼的韌性;鈮、釩、鈦能夠與鋼中的碳結合,減少固溶鉻的損失,從而避免晶間腐蝕,同時細小微合金碳化物的沉澱析出可提高不銹鋼的耐磨性。Abstract : a new simulating method is established for the calcul ation of the hardness profile of high - carbon - concentration deep - carburization, on the basis of analyzing this process and taking into account the influence o f carbide solution and dissolution, carbon - concentration and temperature on the diffusion behavior, and the influence of the environment factor on carbon trans fer through the gas - solid interface
文摘:在對高濃度深層滲碳的特點進行分析的基礎上,考慮到碳化物的析出與溶解、溫度及碳濃度對擴散行為的影響,氣氛環境對相界面碳傳遞過程的影響,淬火烈度對滲碳層冷卻效果的影響,提出了一種新的模擬高濃度深層滲碳滲層硬度分佈的方法。According to the characters of transformations in solids, the ma process can be divided into three stages : physical fragment izing stage, diffusion and solid solution stage, and carbide forming stage
根據相變特點將fe - cr - c三元合金的機械合金化過程分為三個階段:物理粉碎階段、擴散固溶階段和碳化物析出階段。The formation mechanism of mash scale is the following : slightly soluble or soluble substances in hypersaturated state separate out during distillation, soluble calcium salt converts into calcium carbonate scale or soluble calcium salt resolves into indissoluble calcium carbonate scale by heating
摘要醪垢的形成因素有:微溶或可溶物質在蒸餾過程中處于過飽和狀態而析出;可溶性鈣鹽轉化成碳酸鈣垢;可溶性鈣鹽受熱分解生成難溶碳酸鈣垢;前處理的制槳工藝。In this work, using elemental powders as starting reactant materials several carbide powders such as wc, sic, tic, zrc and corresponding alloys had been fabricated by ball - milling technique. x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), transmission electron microscopy ( tem ) and other measurement techniques had been used to monitor the structural changes of powders after some ball milling time and the properties of the cemented tungsten carbides. and the mechanism for the formation of matal carbides by ma has also been discussed
本文主要對機械合金化( ma )技術在碳化物制備中的應用進行了研究,利用高能球磨,以元素粉末為原料,制備出wc 、 sic 、 tic 、 zrc的粉體以及wc基硬質復合材料,並利用x射線衍射、掃描電鏡、透射電鏡等方法分析和研究了球磨過程粉體的變化以及燒結后硬質合金的性能,對機械合金化制備碳化物的有關機理進行了研究和探索。The change regularity for performance and microstructure of low carbon steel is summarized. the main characteristic of the process is pearlite spheroidizing, increasing of grain boundary width, element segregation and carbide in grain boundary. the change of those microstructure causes the variance of the merchant performance
通過上述的研究工作,總結了火力發電廠用低碳鋼在長期運行期間性能與微觀結構的變化規律,提出以珠光體球化、晶界寬化、元素晶界偏聚及碳化物晶界析出為主要特徵的低碳鋼微結構變化規律,以及由此而引起的材料機械性能的變化。When surface temperatures of uranium and uranium - niobium alloys increase higher than 573k, heating was observed to deplete surface oxygen by accelerating its transport into the bulk and separate carbon out to their surface. so there were uranium carbide formed on the surface and thicker layer of uo _ ( 2 ) formed in the bulk. with surface temperature increasing, the o / u ratio dropped sharply as the surface oxygen diffused into the bulk
當溫度高於573k時,溫度增強了鈾及其合金表面上的氧的解吸和向體內擴散,以及促使體內的碳向表面上偏析,導致在鈾及其合金表面上形成了鈾碳化合物,並在體內出現富二氧化鈾層,隨著溫度的升高,表面上的氧和鈾原子的比值降低,鈾碳化合物含量增加,體內的富二氧化鈾層加厚。Based on the findings of tic fining al - si alloys, especially on the experiments and theories of foreign scholars from ninety ' s up to now after cibula put forward the " carbide theory ", we bring forward a new method for adding c to al - si alloys to hope for obtain tic particles which can fine the grain of al - si alloys
本文在分析了國內外自cibula提出「碳化物」理論以來, tic細化al - si合金的研究成果,尤其是九十年代至今的國外學者關于tic細化的實驗及理論基礎上,提出一種新的c的加入方式,以期直接在al - si合金中獲得可以細化晶粒的tic顆粒。The microscopic scanning of the fracture shows that the fracture is not a brittle one, and the qualitative analysis of the inclusions points to the absence of nitrides and carbonitrides in the inclusions
通過斷口的微觀掃描及夾雜物定性分析發現,斷口未出現脆性斷裂的特徵以及夾雜物分析未發現有氮化物和碳氮化物存在。分享友人