燒結氣孔率 的英文怎麼說

中文拼音 [shāojiēqìkǒnglǜ]
燒結氣孔率 英文
sinter porosity
  • 燒 : Ⅰ動詞1 （使東西著火） burn 2 （加熱或接觸某些化學藥品、放射性物質等使物體起變化） cook; bake; hea...
  • 結 : 結動詞（長出果實或種子） bear （fruit）; form （seed）
  • 氣 : Ⅰ名詞1 （氣體） gas 2 （空氣） air 3 （氣息） breath 4 （自然界冷熱陰晴等現象） weather 5 （氣味...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 氣孔 : [礦物學] blowhole; [植物學] stoma; [動物學] spiracle; pore; stigma; [冶金學] gas hole; gas pocket; [建築] air hole
  1. The material was sintered at 1050 for three hours to get the porous artificial bone, that its apparent porosity was54 %, its volume density was 1. 28 g / cm3, and its bending strength was 13. 25mpa. the results showed that the sintering temperature was reduced by adding bioglass

    本研究採用含生物玻璃前驅體粉末原料，添加檸檬酸造孔劑，模壓成型，在1050燒結保溫3小時，獲得了顯氣孔率為54 、體積密度為1 . 28s cm ~ 3 、抗彎強度為13 . 25mpa的多孔hap人工骨材料。
  2. 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。
  3. The raw materials, the composition, the time of milling, the calcining temperature, the different additives, the sintering temperature and the sintering parameters were investigated. the result showed : it was advantaged to obtain high initial permeability mnzn ferrite with stable frequency characteristic using high - purity raw materials ; in order to obtain mnzn ferrite with high properties, we must control strictly the composition ; it could improve the properties of mnzn ferrite by optimizing calcining temperature. the lower calcining temperature made the permeability higher, and the higher calcining temperature could promote the frequency characteristic of permeability ; we chosen the right time of milling according to the requirement of power diameter ; in order to improve the properties of mnzn ferrite, it is necessary to add effective additives. in this dissertation, the influence of bi2o3 、 moo3 、 k2co3 、 co2o3 were investigated ; the sintering temperature, the time of heat - retaining and sintering parameters were the key factors of preparing high permeability mnzn ferrites

    研究結果表明:採用高純度的fe2o3有利於獲得高起始磁導率且頻率特性優良的鐵氧體;為了制備所需性能的鐵氧體，需要嚴格控制配方中各種原材料的含量，優化配方;由於粉體活性受預燒條件的影響，所以對不同要求的鐵氧體選擇的預燒條件就不一樣，適當降低預燒溫度有利於獲得較高的起始磁導率，而為了獲得良好的頻率特性可以適當地提高預燒溫度;根據對粉體顆粒粒徑的不同需求，可以選擇不同的球磨時間;而有效的添加劑是改善材料性能的必要條件，本文在添加劑的研究中主要對bi2o3 、 moo3 、 k2co3 、 co2o3的影響分別作了詳細地討論;燒結溫度、保溫時間和燒結氣氛是高磁導率mnzn鐵氧體制備最關鍵的工藝，適宜的燒結工藝可以獲得理想微結構和組成，從而得到高性能的鐵氧體材料;而從材料的微結構上來看，要提高材料的截止頻率，就要適當地細化晶粒、增加晶粒內部的氣孔。
  4. The microstructure in this system shows randomly oriented fine plate - shaped grains with multi - layered structure. the fine grains randomly oriented ( strong grain boundary scattering ) and pores in these sintered samples could decrease the electrical conductivity. however, on the other hand, the fine grains randomly oriented and pores could lead to a dramatic decrease in the thermal conductivity

    燒結樣品的顯微結構由具有多層片狀結構的顆粒組成，材料的顯微結構直接影響到材料的電導率和熱導率，細小顆粒和氣孔的存在會引起電導率的降低，同時也能降低材料的熱導率，優化材料顯微結構是提高材料的熱電性能的關鍵步驟。
  5. It is investigated in the paper the correlation between the microstructure and the mechanical properties, that is, the effect of the content of free carbon, free silicon, pore and granule size on the bending strength of the material. under 1800, we obtain material with a density of 3. 12 g / cm3, bending strength of 522mpa. it is considered that the increase of the bending strength of the material obtained upon the traditional rbsc material by 50 % is mainly owing to a higher density and a lower porosity than the rbsc material

    研究了高溫燒結材料中游離si含量，晶粒尺寸以及游離c和氣孔對材料強度的影響，對比了所得材料與傳統rbsc材料的顯微結構和力學性能的差別，在高溫燒結下制備了密度為3 . 12g / cm ~ 3 ，強度為525mpa的材料，比傳統rbsc材料提高了50 ，材料中更低的氣孔率和更高的密度是強度提高的主要原因。
  6. Pore parameters ( porosity and distribution of pore diameter ) of porous glass prepared by filler principle were measured and analyzed. they were mainly determined by the volume ratio and the particle diameter of the pore former in the green body. preparation and sintering process of the samples resulted in the difference between the porosity and the volume ratio of the pore former. they were also responsible for the deviation between the distribution of poer diameter and the particle diameter of pore former

    研究表明，利用填充法制備的多孔玻璃的孔參數（氣孔率、孔徑分佈）可進行設計與控制，多孔玻璃的氣孔率和孔徑分佈主要取決于成孔劑的體積比及其顆粒分佈，前者與後者之間的偏差取決于生坯制備及燒結過程。
  7. The results show that : the fillers of sio2 based investment consist of sio2, al2o3 and mgo, and the binder is nh4h2po4 for sio2 based investment, the bulk density and the compression strength decrease, the apparent porosity and the thermal expansion increase, when the specimens are heated to 900 ; the fillers of al2o3 based investment consist of al2o3 and mgo, and the binder is nh4h2po4 ; for al2o3 based investment, the bulk density decreases and the apparent porosity increases when the specimens are heated to 900 ; the fillers of mgo based investment consist of mgo and al2o3, and the binder is ca cement ; for mgo based investment, the compression strength decreases and the thermal expansion increases greatly when the specimens are heated to 900

    結果表明：氧化硅系包埋料的骨料是氧化硅、氧化鋁、氧化鎂，結合劑為磷酸二氫銨，其900鍛燒后顯氣孔率增加，體積密度下降，耐壓強度降低，熱膨脹增大；氧化鋁系包埋料的骨料是氧化鋁和氧化鎂，結合劑為磷酸二氫銨，其900燒后顯氣孔率增加，體積密度下降，熱膨脹變化不大；氧化鎂系包埋料的骨料是氧化鎂和氧化鋁，結合劑是鋁酸鈣水泥，其900燒后耐壓強度明顯降低，熱膨脹明顯增大。
  8. Along with the rising of sintering temperature and the increasing of heat preservation time, the porosity and water absorption reduced, the density and bending strength increased, the bending strength was mostly estimated by the porosity

    隨著燒結溫度的升高和保溫時間的延長，顯氣孔率和吸水率逐漸減小，體積密度逐漸增加。抗彎強度隨著燒結溫度的升高和保溫時間的延長而增加，多孔燒結體的強度可以主要通過氣孔率來判斷。
  9. 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。
  10. A new type of water - resistant buffing and abrasive tool, combined of macromolecule abhesive agent and abrandant with betterelasticity, ductility, higher inner structure, abscess ratio ; it can cut, buff and porphyrize evenly, especially perfect for easily burnt, easily blocked work pieces

    採用高分子粘合劑與磨料合成的新一代拋磨器具，具有較高彈性與韌性，其內部結構氣孔率高，防水性好，具有均勻切削拋磨能力，特別適用於磨削易燒傷，易堵塞的工件。
  11. The analysis of microstructure of samples showed that the grain of tio2 were very small under 700, the distance of grain became small with temperature increasing, the rate and size of pore was decreasing. the relative density of sample at 900 was 97 % and the grain size of sintered body was about 200nm. when the temperature exceeded 1100, the grain size of body grew up several times ( > 2 m )

    Tio _ 2燒結體sem顯微形貌分析表明：低溫（ 700 ）時坯體內顆粒無明顯長大，燒結體緻密度不高（ 80 ）晶粒間距隨溫度升高而變小，氣孔率也隨之降低，氣孔尺寸變小；當溫度超過900時，晶粒間連接緊密，燒結體內出現大量絮狀物質，緻密度大幅度提高，達97以上，小氣孔已聚集成大孔洞且分佈均勻，晶粒長大不明顯（ 200nm左右） ；當溫度超過1100時，燒結體緻密度有所提高，但晶粒尺寸出現異常長大，長大了十幾倍（達2 m以上） 。
  12. The experiment showed that the temperatures and the fiber proportions influenced great on the compressive strength, bending strength, volume density and the porosity of the composites

    實驗結果表明，燒成溫度和纖維含量對復合材料的耐壓強度、抗折強度、體積密度和氣孔率影響較大。
  13. Results indicate that the samples are comprised of slate - like grains growing up in different directions, and that grain size and pore play a domain role in electrical conductivity and thermal conductivity besides seebeck coefficient

    結果顯示燒結樣品由不同取向的片狀顆粒組成，顆粒大小以及顆粒間的氣孔數量對樣品的電導率和熱導率有顯著影響，對seebeck系數影響不大。
  14. We tested the ambient temperature compressive strength, the ambient temperature bending strength, volume density and the porosity of the sintered composites. by means of the om, sem, and x - ray, we analyzed the composites micro - structure ; we studied the dispersion methods & the mechanism of damage of the fiber ; we also did research on the reinforced mechanism and the fabrication characteristics of the fcmc

    測試燒后試樣的常溫耐壓強度、常溫抗折強度、體積密度、氣孔率，並藉助于光學顯微鏡、掃描電鏡以及x射線衍射圖象對復合材料微觀結構進行了分析，探討了復合材料中纖維的分散方法、纖維的損傷機理、纖維增強al _ 2o _ 3復合材料的增強機理和及制備特性。
  15. Adding sic can decreases sintering temperature of al2o3 efficaciously, but also can make the al2o3 crystal growth as flake, strengthen the coalescent of the al2o3 crystals, and the residual sic during sintering can strengthen the al2o3 ceramics. because the reaction between sic and al2o3 begins from the surface of samples, there is a compact protecting field on the surface of the samples to restrain o2 enter into the samples, and leave more pore in them to decrease the thermal expansion coefficient and increase their the al2o3 ceramics " thermal shock resistanc e times

    引入sic的樣品在燒結過程中，首先在樣品的表面產生sic與o _ 2及al _ 2o _ 3的反應，形成一層緻密的保護層，阻礙o _ 2進入材料內部，在材料的內部留下較大的氣孔率，可以降低其熱膨脹系數，並使材料在受熱過程中有一定的空間進行結構調整，能夠顯著的提高al _ 2o _ 3陶瓷材料的抗熱沖擊次數。
  16. In order to study the regeneration mechanism of dpf in detail, we still need a mathematical model of the channel unit, which present temperature field and the soot reaction rate of the channel. finally, it points out the influences of various factors to the regeneration process by computing the numerical solution of model under different boundary conditions and geometry parameters, such as the initial temperature, the gas flow rate, the oxygen concentration, the sediment quantity and the wall thickness of the filters, and so on. in this way, the paper provides theoretical guidance for optimization design of the dpf

    首先研究了干凈壁流式過濾體的加熱特性，然後在加熱和燃燒理論的基礎上建立了微粒捕集器再生過程的數學模型，並對模型進行了數值計算，得到了捕集器內部的三維溫度場分佈以及溫度梯度分佈，結果與實驗值吻合較好，驗證了模型的正確性;為了詳細的研究微粒捕集器的再生機理，建立了孔道單元數學模型，得到了孔道內的溫度場分佈和微粒反應速率分佈;最後，通過求解模型在不同邊界條件和不同幾何參數下的數值解，分析了各種因素對再生過程的影響，如過濾體初始溫度、過濾體內氣流的流動速率、氧濃度、微粒沉積量以及過濾體壁面厚度，為微粒捕集器的優化設計提供理論指導。
  17. Low heating rate and high sintered pressure were profitably for reducing the rate of pore so as to increase the relative density of sintered body

    低的升溫速率和高的燒結壓力有利於氣孔的排出，降低氣孔率，從而提高燒結體的緻密度。
  18. 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。
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