熔化的表面層 的英文怎麼說

中文拼音 [rónghuàdebiǎomiàncéng]
熔化的表面層 英文
melting surface layer
  • 熔 : 動詞（熔化） melt; fuse; smelt
  • 的 : 4次方是 The fourth power of 2 is direction
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  • 熔化 : melt; smelt; meltdown; fusion; fusation; diatexis; eliquation; run; melting; smelting
  • 表面 : surface; superficies; boundary; face; rind; sheet; skin; outside; appearance
  1. In the investigations on laser cladding, experiments and analyses of laser clad nickel - based alloys and nickel - based ceramal composite alloys on steel substrates were performed to improve wear - resistance and corrosion - resistance properties of the coatings

    以提高材料表面的耐磨、耐蝕等性能為目的，採用預置和送粉熔覆工藝方式，對常用的鎳基合金和鎳基碳化鎢金屬陶瓷合金塗層進行系統研究。
  2. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  3. The amorphous surface layer of tantalum was obtained by anodic oxidation in melting nitrate after plasma - nitriding at relative low temperature, and the composition, phase structure and property of coating were tested

    摘要採用低溫離子滲氮后再熔鹽陽極化的方法，在鉭表面形成厚度達微米數量級的非晶態層，測試了非晶層的成分、相結構和性能。
  4. The company is a sino - foreign joint - venture enterprise, incorporating smelting, electroslog, refining, forging, steel rolling and tool manufacturing. it has production lines for high speed steel, mould steel, hss circular saw blades, face - sides cutters, mould, blocks, pre - hard fine plate, garden knives, alloy special cutters and planer knives, as well as six production lines for heat treating. the nano coating center is production base for tool & mould steel productions in domestic

    公司是一家集冶煉、電渣重熔、鍛造、軋鋼、精整、工具製造於一體的中外合資企業，擁有高速鋼、冷、熱作模具鋼生產線，高速鋼圓鋸片、三面刃銑刀、模具預硬精板、木工刨刀生產線，高溫熱處理、表面鍍層研發加工中心，是國內最專業的工模具鋼製品化生產基地。
  5. The result of analysis shows that the convective heat flux has main effect on fuel pyrolyzing and vaporizing, the liquid layer of pe fuel can increase the regression rate but also can cause unstable burning. 4

    研究結果表明：對流熱流是引起燃料熱解氣化的主要因素， pe熔化產生的液體層提高了燃料熱解退移速率，但液體層厚度增加到一定程度時，對發動機工作穩定性有負面影響。
  6. Aiming at reducing the roughness of the sidewalls in the manufacturing of the pmma liquid pool by co _ 2 lasers, in the hypothesis that the intensity of the laser has a guassian distribution, the temperature distribution in slab material with limited thickness is studied according to traditional thermal conductive formulas, and the condensing progress of the melted surface of sidewalls is researched. it is concluded from the discussion of temperature distribution that the air bulbs is the major reason for the roughness of the sidewalls

    為降低co _ 2激光加工pmma材料儲液池側壁粗糙度，本文根據傳統的熱傳導方程，假定激光強度為高斯分佈，對有限厚板狀材料的溫度場進行分析;並考察側壁表面熔化層凝固過程的特徵;結果表明，側壁粗糙度形成的主要原因在於側壁表面熔化層凝固前氣泡未及時析出。
  7. Combining with the energy fluxes balance above fuel surface, the simulation and calculation of transient heat conduction of the pe fuel with liquid layer while melting and pyrolyzing are considered by use of the moving coordinates. the calculated regression rate of the pe fuel approximately tallies with the same kind of hybrid rocket motor test data from the abroad

    建立了pe燃料的熔化、熱解、導熱模型，應用動坐標系，結合燃料表面熱環境，對具有液體層的pe燃料的熔化、熱解和內部瞬態導熱過程進行了模擬計算，計算的pe燃料退移速率與國外同類試驗的測量結果符合較好。
  8. Typical temperature is 800 - 1000 in cvd diamond process, while the high temperature limits its application in optical window and coating such as gaas, zns etc. low temperature can not only make diamond crystal nucleus finer, reduce surface roughness of diamond films and lessen light dispersion, but also eliminate thermal stress

    化學氣相沉積金剛石膜過程中，襯底的典型溫度為800 1000 ，這么高的溫度限制了其作為gaas 、 zns等低熔點光學材料窗口和塗層的應用。低溫沉積金剛石膜不僅可以使晶粒細化，降低表面粗糙度，減小光的散射作用，而且可以消除熱應力。
  9. 4, the formation mechanism of the n - sic particles in the ceramic coating prepared by the nano - micrometer n - sic / al2o3 composite powder located within m - al2o3 grains is revealed : m - al2o3 would be well melted during spraying and form droplet, the n - sic particles existing on the surface of droplet, then the particle enter the droplet when it is impacted and flattened on the substrate

    4 、提出了利用納米一微米n - sic al _ 2o _ 3包覆復合粉末所制的陶瓷塗層中n - sic粒子分佈於m - al _ 2o _ 3晶內的機理：在噴塗過程中微米級al _ 2o _ 3完全熔化形成液滴， n - sic粒子存於液滴表面，在液滴撞擊基材平鋪過程中n - sic粒子進入液滴內部形成。
  10. The forming - nucleus drive power could form numerous little crystal nucleus under natural melting temperature. the formation of tic particles in the melt could be divided into two phases which was forming - nucleus and growth. the forming mechanism of tic was : melting ti first surrounded c, then ti melting in the alloy and c formed a complicated reaction mesosphere on the carbon surface

    根據熱力學及動力學分析，認為在碳顆粒界面處tic的形核率很高，形核驅動力足以在正常的熔煉溫度下形成眾多的小晶核；熔體中tic顆粒的合成可分為形核與長大兩個階段，其形核機制為：首先活性ti原子包圍c ，溶入合金中的ti與c在碳表面形成一復雜反應中間層，隨著反應進行， ti和c顆粒不斷減少，生成的tic不斷彌散分佈於熔體中；其長大過程伴隨著tic顆粒的相互堆砌、聚集和形態規則化。
  11. Crack generation in laser - clad coatings is the most difficult problem t o be solved before massive application of this technology. in order to seek out effective methods for eliminating or reducing crack generation, we carried out systemic experiments and mechanism analyses on the design of laser cladding materials, the exploration of laser cladding technique, the interaction between laser and materials, the microstructure and properties of the coatings

    針對阻礙激光熔覆技術工業化推廣應用進程的主要問題之一的熔覆層裂紋問題，為尋求該問題的有效解決方法，從熔覆材料體系的設計、熔覆工藝的探索和規范以及在工藝規范條件下激光與熔覆材料的相互作用關系、塗層組織和性能到工件表面的最後強化和改性效果，進行了系統實驗研究和機理分析。
  12. Abstract : a laser damage facilities, which has mm size spot and operates in tem00 mode ， were achieved. in order to know the reasons of laser damage, the laser energy density was controlled near the damage threshold of the oxide thin films. according to the examined near - threshold damage morphology, the damage mechanisms of the optical coatings can be divided into two types. one was caused by melting of the coating materials, another by exploding, induced with the inner stress of the film. the plasma generated was an important reason to expand the damage area

    文摘:採用毫米量級大光斑的近單模的激光器，控制入射薄膜表面的激光能量，獲得了幾種常見單層膜和增透膜的損傷形貌，實驗結果表明，薄膜的損傷可區分為熔化型和應力型兩種，薄膜表面等離子體對損傷斑點的擴大有重要作用。
  13. The chemical analysis shall meet the minimum requirements of the specification for the welding electrode being used, to a depth of the cladding thickness from the finished deposit surface

    自已完成熔敷表面以下復層厚度深度的化學分析，應滿足所用焊條規格的最低要求， 。
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