緻密粉末 的英文怎麼說

中文拼音 [zhìmìfěnmò]
緻密粉末 英文
dense powder
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 粉 : Ⅰ名詞1 （粉末） powder 2 （用澱粉製成的粉條或粉絲） noodles or vermicelli made from bean potato o...
  • 末 : Ⅰ名詞1 （東西的梢;盡頭） tip; terminal; end 2 （非根本、非重要的事物） nonessentials; minor detai...
  • 粉末 : powder; flour; stive; smalls
  1. Mas precursor powders were uniaxially pressed at 100 mpa employing a lubricated steel cylindrical mold. after sintering at 1450 for 2 hours, single - phase cordierite ceramic is prepared, and its relative density is 95. 1 %

    Mas先驅體粉末在100mpa的軸向壓力下成型后，經1450無壓燒結2小時，得到單相堇青石陶瓷，其緻密度達95 . 1 。
  2. In this paper, nanosized al2o3 ceramic particles were chose as reinforcing phase. enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating, the copper - matrix composite was developed by hot - press sintering process of the composite powder. the composition, microstructure, hardness, density and dry sliding wear property of the new material have been studied

    研究路線為：選用納米級al _ 2o _ 3陶瓷顆粒作為增強相，在超聲波的環境中用化學鍍的方法完成對納米al _ 2o _ 3陶瓷顆粒表面的金屬銅包覆，採用熱壓燒結成型技術以復合粉末為原料制備成納米al _ 2o _ 3陶瓷顆粒增強銅基復合材料，研究分析復合材料的成分、組織結構、硬度以及緻密度，對試樣進行了干滑動摩擦磨損實驗。
  3. Progress in the densification of powder metallurgical titanium alloys

    粉末冶金鈦合金緻密化研究的進展
  4. Densification mechanism and its applications in designing powder mixtures for warm compaction

    溫壓緻密化機理及其在溫壓粉末設計中的應用
  5. The experimental data has been used to validate pdm and low temperature sintering mechanics. the advantage and disadvantage of pdm have been discussed also. for the first time, the pdm is used to study the low temperature sintering mechanics of uo _ 2, and the research results indicate : 1

    3 、基於燒結頸長大速率與緻密化動力學方程得出，影響二氧化鈾低溫燒結的因素有原始粉末粒徑、粉末堆積方式、坯塊原始密度、燒結溫度、燒結時間、燒結氣氛等;粉末壓坯一定時，燒結溫度、燒結時間和燒結氣氛就成為控制低溫燒結的關鍵因素。
  6. 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。
  7. The iron covered silicon powder was fabricated separately by the milling method and the mixing method. treated separately at 500, 600, 700, 800, 900 and 1000 for 1 minute, the iron silicon alloy bulk was attained. it also found that the density of the bulk was enhanced by the boost of the treated temperature

    實驗分別採用球磨法和混料法制備鐵硅包覆粉末，採用放電等離子燒結技術分別在500 ， 600 ， 700 ， 800 ， 900 ， 1000保溫一分鐘進行處理，得到鐵硅合金塊體，研究發現，隨著處理溫度的提高，塊體的緻密度隨之增加，顯微結構的分析表明，塊體基本保持了包覆粉末原始自然狀態。
  8. The films prepared from ballmilling modified powder are dense in both surface and cross section while filmsprepared by unmodified powder are porous

    使用球磨優化后的粉末制備的電解質膜緻密，而使用未球磨粉末所得膜內微孔較多。
  9. 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。
  10. This may be due to the larger and more homogeneous powder particles after milling which decrease the specific surface areas between particles, and the oxide coatings on the particles which impede substances to diffuse and transport to the sintering necks

    研磨后粉末的粗化和形狀等軸化使得粉坯中顆粒接觸表面減少，以及由於粉末氧化導致的顆粒間物質擴散流通困難可能是抑制燒結緻密化的兩個主要因素。
  11. The surface reaction of water atomized 304l austenitic stainless steel powder during sintering has been studied

    摘要研究了水霧化奧氏體不銹鋼粉末在緻密時的表面化學反應。
  12. Powder extrusion is an important method for obtaining high - property dense products. the process of powder extrusion forming has been studied and developed extensively in foreign countries

    粉末擠壓法是制取粉末冶金緻密高性能材料的重要手段，國外對粉末擠壓成型工藝的研究和應用已十分廣泛，國內在這方面的研究則相對落後。
  13. Viewing solely from their performance, mdf, dsp, rpc all enjoy a high compressive strength. their flexural strength, fracture toughness and elastic module have broken the limit of traditional cement based materials. all these materials have acquired the features of high toughness material

    從材料性能審視，無宏觀缺陷水泥基材料、均布超細顆粒緻密體系、活性粉末混凝土等的抗壓強度都非常之高，其抗拉強度、斷裂韌性和彈性模量也突破了傳統水泥基材料的限度，這些材料具備了高強韌性材料的特徵。
  14. The results indicate that arc melting is a good method to produce nb - si system intermetallics due to its simpler technics, lower cost and compact products. however, powder metallurgy is found to be not suitable to produce the nb - si system intermetallics due to its coarse and loose products resulting from the poor molding property of nb and si mixed powders. optical floating zone technology, which is used to fabricate nb - si intermetallic composites for the first time, is also found to be a good way to produce nb - si system intermetallics because of its compact products and good property despite of its relatively high cost

    結果表明，電弧熔煉方法制備得到的nb - si系金屬間化合物比較緻密，且制備工藝簡單，經濟實用，是一種合適的nb - si系金屬間化合物制備方法；由於nb 、 si元素粉末的成型性很差，用粉末冶金方法（熱壓燒結和冷等靜壓）制備的nb - si系金屬間化合物表面粗糙、緻密度低，且成本較高，不宜用於制備nb - si系金屬間化合物；首次用光學懸浮單晶生長技術制備的nb - si系金屬間化合物復合材料緻密度很高，盡管成本稍高，但由於性能最佳，也是一種合適的nb - si系金屬間化合物制備方法。
  15. In the present dissertation, the densification mechanisms and the structure controlling of various transient layers of w - mo - ti flier - plates with graded wave impedance were mainly investigated. wholly dense w - mo - ti flier - plates were then prepared by powder stacking and hot - pressing. in order to achieve a required wave impedance profile and a quasi - continuous change along the thickness direction, the ratios of components in transient layers were well adjusted

    論文採用粉末冶金方法，詳細研究了w - mo - ti體系梯度飛片材料中各組元的燒結緻密化機理與控制方法，以精細控制不同配比的混合粉末的鋪填方式與鋪填結構來減小梯度飛片材料內部波阻抗值的躍變幅度，成功制備出波阻抗按指定分佈特徵沿厚度方向準連續變化的、波阻抗面平行度高並且整體緻密的w - mo - ti體系梯度飛片。
  16. According to that criteria, high performance cement based materials should include : micro - defect - free cement ( mdf ), densified system containing homogenously arranged ultra fine particles ( dsp ), reactive powder concrete ( rpc ) and so on

    其它新的高性能水泥混凝土材料還包括:無宏觀缺陷水泥基材料（ mdf ） 、均布超細顆粒緻密體系（ dsp ） 、活性粉末混凝土（ rpc ）等。
  17. Using aluminium sulfate and colloidal silica as raw materials, another kind of mullite precursor powders is made. the relative density of silica - rich mullite ceramic sintered from these powders at 1550 for 1 hour with a pressure of 15mpa is 97 %

    以硫酸鋁、硅溶膠為原料，採用溶膠-凝膠法制備了莫來石先驅體粉末，所得富硅莫來石先驅體粉末在1550 、 15mpa下熱壓燒結1小時后，緻密度達97 。
  18. Through observing the interface of porosity hap sintered at 1050, the gradient changing of pore size was observed that was like gradient structure of bone. in the compact layer there were a few about 50 y mpores and many about 5um micropores. in the porous layer there were many about 500um pores

    緻密層存在少量的尺寸為50 m左右的氣孔和大量的尺寸為5 m左右的微孔，這是原料中殘留有機物燒失以及粉末顆粒燒結不緻密形成的；多孔層存在大量的尺寸為500 m左右的大孔，這是檸檬酸造孔劑燒失形成的，在大孔之間存在一些約50 m 、 100 m的氣孔。
  19. 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。
  20. The la1 - xsrxmno3 powder has been sintered by constant pressure sintering, heat pressure sintering ( hp ) and spark plasma sintering ( sps )

    通過無壓燒結，熱壓燒結和sps燒結工藝對lal . xsrxmno3粉末進行燒結，其中sps燒結在900 ，保溫1omin得到的燒結樣品緻密化程度最好。
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