枝晶體 的英文怎麼說
中文拼音 [zhījīngtǐ]
枝晶體
英文
dendrite-
In one, equiaxed dendrites form and subsequently ripen into more - or - less spheroidal shape, suitable for forming
一個是先形成由等軸晶粒構成的晶枝體,再熟化形成類似的球狀體。Ajs20, the precursor contained 20wt % alunina sol seeding, was calcined at around 1000 to get free - aggregation nano - sized a - alaos powders with a median particle size of 70nm. and, calcining ajs2, the precursor contained 2wt % alumina sol seeding, at hoo ' c, we get a - alaos nano - sized powders with a particle size of loonm and good dispersion by tem. this paper also gives the proper mechanisms of these factors " influences on the transformation to alpha phase
研究結果顯示,含有20wt膠體籽晶的前驅體ajs20在1000左右煅燒就可獲得平均粒徑為70nm 、無團聚的納米- al _ 2o _ 3粉體;而含有2wt膠體籽晶的前驅體ajs2在1100即可獲得粒徑在100nm左右、幾乎單顆粒分散、有少量「樹枝狀」微結構的納米- al _ 2o _ 3粉體。Porosity can be caused by gases coming out of solution during cooling and becoming trapped between dentrite arms as tiny voids
在冷卻過程中,溶液中的氣體逸出造成多孔性,或被截留在晶體枝杈之間形成微小氣孔。Through the research on the crystallite of the composites modified with silicone coupling agent and pp - g - mah, research showed that the size of the crystallite and oriented crystallization had obviously influence on the mechanical performances. the sem results showed that nano - sio2 was dispersed well in pp, which promoted the matrix undergo shear yielding rather than brittle fracture
通過對硅烷偶聯劑?馬來酸酐接枝聚丙烯共聚物作為界面改性劑改性pp微晶的研究,表明微晶尺寸變化與復合材料的力學性能有關;在界面附近形成擇優取向的結晶層,促使基體發生屈服變形,提高了復合材料的韌性。Isothermal crystallization behaviour of ternary - monomer solid - phase graft polypropylene
聚丙烯與三單體固相接枝物的等溫結晶行為Abstract : the defects such as inclusion, splitting, dislocation and dendrite in the pbxla1 - x ( zry tiz sn1 - y - z ) o3 ( plzst ) single crystal grown from pbo - pbf2 flux by the slow cooling self - seeding technique were discussed in this paper. the forming mechanism of these defects were analyzed and some measures to eliminate the defects were proposed
文摘:本文介紹了助熔劑緩慢降溫自發成核法生長的稀土摻雜鋯鈦錫酸鉛鑭( plzst )晶體中出現的幾種缺陷:包裹體、開裂、位錯、枝晶,分析了這些缺陷的形成機理並提出了減少和消除這些缺陷的一些措施。Effects of supercooling on dendritic side - branching during solidification of pure ni melt
過冷對純鎳熔體凝固過程中樹枝晶側向分枝的影響The desired microstructure for semi - solid forming is one free of dendrites, with the solid present in as spherical a form as possible and with minimum entrapped liquid
半固態形的理想結構是無晶枝,呈現的固體要盡可能為球形狀,且滯留液體盡可能少。Abstract : the crystal structures obtained by static solidification and vibration solidification were compared. it was showed that, in the case of vibration solidification, the orientation growth of the columnar crystal was not obvious, the equiaxial crystal appeared more early. the grains of both types of crystals were quite fine, hardness in the full section was relatively high, and the hardness distribution was uniform. in the former case, the solute segregation in dendritical austenite more severe, and there were lumps of distortion inclusion
文摘:對球鐵金屬型靜凝固與振動凝固的結晶組織對比表明:後者柱狀晶方向性生長較弱,等軸晶出現較早,且兩者的晶粒均較細,全斷面硬度較高且分佈均勻;前者枝晶奧氏體內溶質偏析大,有畸變夾雜團塊。The values of modified zc of pp - g - am were a little higher than those of pure pp
接枝產物的校正晶體增長速率常數z _ c略大於純pp 。Thus mechanical properties, heat resistance properties and solvent resistance properties of pu are greatly enhanced. crystal forms of composite materials, surfacial reactivity and adsorption assemble properties of zeolite are discussed in this paper by means of xrd, ftir and tg etc. the test results of xrd prove that mmt can be exfoliated into nanocomposites in pu / mmt, while zeolite keep its original crystal structure in pu / zeolite. the spectras of ftir prove that tdi can graft on the surface of the zeolite
Xrd測試結果證實了有機蒙脫土在聚氨酷體系中能夠剝離成納米粒子,而聚氨醋/沸石分子篩復合材料中分子篩仍保持原來的晶型結構; ftir譜圖驗證了異氰酸酷( tdi )可太原理工大學碩士學位論文摘要與沸石分子篩表面的硅經基進行接枝反應形成穩定的化學鍵;而tg分析結果則進一步證實了分子篩的穿孔機理。The test shows that the cooling speed affects the first arm - spacing and the second arm - spacing, and concluded that they are decreased, the fracture fractographies are improved, and the mechanical properties, especially the toughness, is obviously increased while the cooling speed increases
摘要試驗表明,冷卻速度增大,使奧氏體的一次二次枝晶間距縮小,斷口形貌改善;並且可使材質的綜合力學性能,特別是韌性明顯提高。It has discovered for the first time that the precursor b - ni1 - xcox ( oh ) 2, with pluffy and dendritic morphology, high specific surface area and low tap density, is the best starting material to produce lini1 - xcoxo2 materials, but not the presently thought that high density and spherical particle of ni ( oh ) 2 is fitting for the preparation of ni - cathode materials. using our own precursor can greatly reduce the degree of cation mixing ; improve the electrochemical properties of the aimed materials
發現表面蓬鬆、比表面積高和密度低、呈枝晶狀排列的- ni _ ( 1 - x ) co _ x ( oh ) _ 2前驅體具有較高的化學活性,制得的目標材料可有效抑制陽離子混排產物的生成,而非目前廣泛認為的高密度球形ni ( oh ) _ 2適合作鎳系正極材料的前驅體。The average level of surface ' s micro - hardness enhanced 3 times in contrast of the substrate ' s
結果表明:合金化層組織形態為細小的枝晶,明顯優于基體組織;合金化層平均硬度比基材提高3倍。分享友人