晶粒大小分佈 的英文怎麼說
中文拼音 [jīnglìdàxiǎofēnbù]
晶粒大小分佈
英文
crystallite size distribution- 晶 : Ⅰ形容詞(光亮) brilliant; glittering Ⅱ名詞1. (水晶) quartz; (rock) crystal 2. (晶體) any crystalline substance
- 粒 : Ⅰ名 (小圓珠形或小碎塊形物) small particles; grain; granule; pellet Ⅱ量詞(用於粒狀物)
- 小 : Ⅰ形容詞1 (體積、面積、數量、強度等不大) small; little; petty; minor 2 (年紀小的; 年幼的) youn...
- 分 : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
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Beryllium powders with the same particle size and various contents of beo were prepared by pre - sintering - acid washing processes initiatively and the influence of beo alone on o mys of beryllium was observed and some new results have been obtained - compared with the content of beo, the distribution of beo in beryllium has more critical influence on mys ; finely dispersed beo along the grain boundaries and in the matrix results in the dispersion strengthening of beryllium matrix and thereby the higher mys value ; on the contrary, the coarser beo particles clustering on the grain boundaries results in negative influence on o mys
開創性地用預燒結? ?酸洗工藝制備了相同粒度、不同beo含量的鈹粉,從而開展了beo含量單獨對鈹材_ ( mys )影響的研究,得出一些新的結果:與beo含量相比, beo在鈹中的分佈狀態對_ ( mys )的影響更大。沿晶界、晶內彌散分佈的較細小beo對基體鈹有彌散強化作用,使_ ( mys )即較高;如果beo較粗大地成簇狀聚集在晶界,反而對_ ( mys )有不良的影響。The cobalt can also be strengthened by the difference of the hot expansion coefficient between cobalt and ceramic
氮氣保護試樣表而各元素分佈很不均勻,晶粒大小相差很大,有較多的異常長大相。Experimental results show that the order of fluoride salt being put in and flux type also influences the phases constitution, morphology, distribution and absorbent rate of ti and b. the experiments on remelting master alloys and al or al alloys at a certain temperature range show that the phases constitution and size have a remarkable heredity
試驗結果表明,不同的氟鹽加入順序和熔劑種類的不同也直接影響著中間合金中化合物的相組成、形態、分佈以及中間合金中ti 、 b的實收率等。在用純鈦顆粒法制備中間合金時,熔煉溫度的改變只能影響tial _ 3晶體的尺寸大小,而無法改變其形態。The microstructure of lamellae pearlite has evolved ultrafine cementite particles throughout the ferrite matrix uniformly after five passes. the ferrite matrix is homogeneous grains, average grain size is - 0. 3 m. 2
變形五道次后,片層狀的珠光體組織演變成了超細的滲碳體顆粒均勻分佈於鐵素體基體的組織,鐵素體基體為均勻的等軸晶,平均晶粒大小為0 . 3 m 。The nanoparticle titanium dioxide was prepared with tnb as raw material by the sol - gel process, the effects of the alcohol salt concentration the kind of solvent the water volume hydro1yze temperature. the dried ways of the wet gel and the calcined temperature of the dry gel on the specific surface area. particle size
本文以鈦酸丁酯為前驅體,利用溶膠?凝膠法制備了納米級的tio _ 2粉體材料,通過正交實驗研究了醇鹽的濃度、溶劑的種類、水含量、水解溫度、乾燥條件和煅燒溫度等工藝條件對納米粒子的比表面積、粒徑大小及分佈、晶相組成等性能的影響。The microwave magnetic sintering can not only lower the sintering temperature and shorten the sintering time, but also decrease the micro - grain size of magnets and make intergranular phase and grain boundary of main phase distributed well. the abnormal grain growth was found in conventional sintered ndfeb magnets, which may be due to the greater particle size and uneven distribution of powder, and higher sintering temperature and longer sintering time. of course, the abnormal grain growth would deteriorate the magnetic properties
微波磁場燒結的不但降低燒結溫度,縮短燒結時間,而且使磁體整體加熱,受熱更均勻,因而磁體晶粒更細小,並且主相晶粒邊界趨于規則化,晶間相的分佈更均勻;在常規燒結的磁體中則出現了晶粒異常長大現象,造成這一現象的原因,一方面可能是燒結溫度過高或燒結時間過長,另一方面可能是磨製的粉體均勻性較差,存在的大顆粒被許多細小顆粒包圍,在燒結過程中,大顆粒不斷吞併小顆粒,逐漸長大,而異常長大的晶粒自然會導致磁體性能的惡化。The analyses of their microstructure showed that comparing with zl101 that contained no titanium, the trace amounts of titanium in alloys caused grain refining of al - l % si in zl101a prepared from electrolytic low content titanium aluminum alloy ( i. e. alti101a ) and zl101a prepared from electrolytic al - si - ti alloy ( i. e. ast101a ), and the grain size distribution became more even, whereas the trace amounts of titanium have little influence on the size and shape of si particles in these alloys
微觀組織分析結果表明,相對于不含鈦的zl101 ,微量的鈦可以使電解低鈦鋁合金制備的zl101a ( alti101a )和電解鋁硅鈦合金制備的zl101a ( ast101a )的( al )相的晶粒細化,晶粒大小分佈均勻,但對它們的si粒子尺寸和形貌影響不大。We apply the system to the ultra - fine grain steel welding, the simulated mean grain size in cghaz agreed well with the corresponding independent experimental data. in this paper, three factors influencing the grain growth, the steep temperature gradient in haz. the grain boundary liquid and the precipitates particle, were studied specially using mc technique
研究表明溫度梯度造成的「熱釘扎」現象和晶界液化現象都對靠近熔合線附近的晶粒長大有明顯的阻礙作用,對最終的晶粒大小分佈有重要的影響:而800mpa超細晶粒鑰中的tin粒子山于溶解溫度高,抑制奧氏體晶粒長大的效果十分顯著。This edta route has several remarkable advantages in comparison with other method. because of the greater ability of edta anions to chelate metal cations, and forming very stable and soluble complexes, all of the starting materials are mixed at the molecular or atoms level in a solution, it is easy to control the composition and a high degree of homogeneity is achievable
傳統的合成方法是高溫固相反應,由於灼燒溫度高、灼燒時間長,形成硬團聚體,產物粒徑較大,一般為m級,需進行球磨粉碎以減少其粒徑,很難制得均相、均一粒度分佈的氧化物粉體,在研磨過程中容易引入雜質且晶形破壞使得發光亮度減小。The highest jc of 8. 64 105a / cm2 at 10k, 0t was obtained in the un - doped mgb2 / fe tape sintered at 800 for 15 minutes by sps. it is worthwhile to note that the jc value was decreased much slowly in this sample with the increase of the testing temperature and magnetic field. for example, the jc was 5. 97 105a / cm2 at 20k, 0t, and at 20k, 3t the jc value was
從目前試驗結果看,摻雜量為5mol %時線材性能較好,樣品的臨界電流密度在自場下達到6 105a / cm2 ,並且sic摻雜改進了樣品在高場下的jc值,在4t時,摻雜線材樣品的臨界電流密度大大超過未摻雜樣品,這是由於sic的摻入生成了細小均勻的mg2si ,分佈在晶粒Although the resistance to oxidation increases with the increase of tungsten, the netlike carbides distributed along the crystal boundary including m2c, m6c and complex carbides manifold by means of the analysis of optical microstructure, xrd and reckoning the volume fraction of carbides by lattice
1變質時;晶粒大小在扣100pm之問,而網狀碳化物明顯細化,網狀碳化物處在10 30um之間;用1 4 re1i mg復合變質后,晶粒大小在10 50um之間,網狀碳化物處在10 20um之間,組織細小而均勻,絕大部分晶界碳化物呈斷網狀分佈。The results show that a certain extent, the other parameters constant, increasing power, increasing scanning speed, small grains become more dense ; the good and bad of metallurgical belt, the cellular crystal thickness and the availability and distribution of inclusions are affected by the parameters
結果表明:在一定范圍內,其它工藝參數不變,增加功率,增大掃描速度,晶粒更趨緻密細小;工藝參數影響冶金結合帶的優劣、胞狀晶區的厚薄以及夾雜物的有無和分佈。The size of the zno nanocrystal grain was so little that the quantum confinement effect should be considered. that makes the band gap wide. atom transfer rate is affected by the substrate temperature, and the average size of the zno nano crystal grain increases with the increasing substrate temperature resulting in the red shift of pl emission position and the narrowness of pl fwhm
低溫生長的氧化鋅晶粒小,考慮到量子限制效應,禁帶寬較大;襯底溫度影響吸附原子遷移能力,隨著溫度升高,晶粒的尺寸增大,分佈變的均勻,因而發光峰位隨著襯底溫度的升高而紅移,發光的半高寬變小。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) 。For adapting to the need of industrialization and improving the properties of materials, the method of mechanical activation has introduced on the basis of traditional calcinations at high temperature. the stardard spinel limn204 is prepared by the mechanical activation - high temperature solid synthesis method. the thermodynamic property, the physical - chemistry performance and the producing techniques of. battery have been studied by means of thermogravimetry ( tg ), differential scanning calorimetry ( dsc ), x - ray diffraction ( xrd ), scanning electric microscopy ( sem ) as well as various electrochemical analysis methods. studies show that synthesis temperature, calcinations time, recipe of raw materials, heat treatment and particle size of products are main factors affecting the performances of limn204 cathode materials. with the increment of synthesis temperature and time, the structure and crystal of products are getting to perfect
隨著合成溫度和時間的增加,產物的結構和晶型越趨于完善,但在1100得到的產物有燒結和晶粒增大的現象,恆溫時間超過24h后對材料的性能影響不是很大; li mn比在0 . 95 1 . 05 2的條件下都可得到標準的尖晶石limn _ 2o _ 4 ,尤其當li mn比為1 . 05 2時,所合成的材料具有較好的電化學性能;通過兩段合成法制備的產物性能要比一段合成法法制備的產物性能好,而兩段間隔合成法比兩段連續合成法處理的材料性能更佳;顆粒的粒度隨著球磨時間的延長而減小,比表面昆明理工大學碩士學位論文摘要卻增大,粒度小且分佈范圍窄的材料有利於鏗離子的擴散。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。It was showed that the dlc gradient film has a smooth surface with noncrystal amorphous structure, its surface vicker ' s hardness was as about three times as that of ti6a14v alloy substrate, and high adhension strength of no less than o. sgpa between dlc film and substrate was estimated by liquid quench method
類金剛石薄膜梯度材料由大小分佈均勻,表面光滑的非晶態微小顆粒組成。表面顯微硬度約為ti6a14v合金基體的3倍。薄膜與基體之間的結合強度不低於0 . 8gpa 。In this research, nanosize tio2 were prepared by wet chemistry method. the effects of technical condition, ion doping and noble metal modification on crystal structure of ti02, crystal size and its distribution, spectrum and photocatalytic activity were studied in order to prepare nanosize tio2 of high photocatalytic activity. effect factors such as temperature in photocatalytic process were also studied
本工作選用濕化學方法制備納米tio _ 2光催化劑,研究制備工藝條件、離子摻雜和貴金屬沉積等對納米tio _ 2晶體類型、粒徑大小及分佈,光譜性質和光催活性的影響規律,以期研製出具有高光催化活性的納米tio _ 2光催化劑;同時研究光催化過程中光催化環境溫度等因素對光催化活性的影響規律。Results show that zro2 - ni cermet has clear crystalline interface and uniform distribution. its crystal size is 0. 3 p m. through analyzing the data of specific heat of zro2 - ni cermet, it reveals that adulterating cobalt can enhance the wetting quality of ni and zro2
用xrd 、 sem研究了zro _ 2 - ni - co金屬陶瓷的相結構和形貌,確定了合適的燒結溫度,結果表明,材料的晶粒大小和分佈十分均勻,晶界清晰,粒度在0 . 3 m左右。分享友人