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- The impurity concentration profile depends on epitaxy growth velocity, growth time and impurity diffusion coefficient. 如果雜質(zhì)的擴散系數很小，雜質(zhì)在外延層中的深度分布是均勻的。
- The microstructure and the properties of nickel diffusion layer were also investigated. 同時(shí)，對擴散層的組織和性能進(jìn)行了研究。
- Quantum well intermixing induced by impurity diffusion has been used in fabricating nonabsorbing windows in the cavity facets to improve the output power of high-power laser diodes. 雜質(zhì)擴散誘導量子阱混雜技術(shù)可用于制作腔面非吸收窗口, 提高大功率半導體激光器的輸出功率。
- The characteristics of so-called silicon diffusion layer were analyzed through EPMA and hardness test. 通過(guò)成分分析（EPMA）和硬度測試， 分析了硅擴散層的特征。
- SO_4~(2-) ions can hardly enter into Stern layer and SO_4~(2-) ions adsorbed byC-S-H surface distribute in the diffusion layer for the main. SO_4~(2-) 離子很難進(jìn)入吸附層,被吸附的SO_4~(2-)離子主要分布在擴散層中。
- The gas diffusion layer of air electrode was prepared by the rolling method with acetylene black and 60% PTFE emulsion as raw materials. 以乙炔黑、60%25PTFE乳液為原料,用輥壓法制備空氣電極的氣體擴散層。
- Until now, there have been many attempts to increase fuel cell performance by developing or modifying the gas diffusion layer (GDL). 直到現在，已有許多研究證實(shí)，改良氣體擴散層的碳微孔層性質(zhì)可以促進(jìn)燃料電池的性能提升。
- Moreover,metallograph examination and hardness measuring are made for the specimens and electronic probing imposition for the diffusion layer. 結果表明,在共析溫度以下進(jìn)行催滲氮碳共滲,具有滲速快、滲層硬度高的特點(diǎn);
- Gas diffusion layer (GDL) is one of the most important electrode components in proton exchange membrane fuel cell (PEMFC). 在質(zhì)子交換膜（PEM：Proton Exchange Membrane）燃料電池中，氣體擴散層（GDL：Gas Diffusion Layer）是電極的重要組成部分，其結構和性能參數對電池的綜合性能有重要的影響。
- By using the larger porosity of the gas diffusion layer, it can effectively prevent the anode side of the membrane from being dry, the cathode side of the membrane from flooding. 當使用孔隙度較大的氣體擴散層，可以防止薄膜靠陽(yáng)極側乾化，薄膜靠陰極側淹水，并可把各層達穩態(tài)的時(shí)間縮短。
- The sublayer sandwiched between gas diffusion layer (GDL) and cat alyst layer can reduce water saturation in the catalyst layer and optimize gas and water transport. 在催化層和擴散層之間加入的擴散亞層能夠減小催化層的水飽和度,優(yōu)化擴散層中的水和氣傳輸。
- The results show that the catalytic cementation nitrocarburizing below the eutectoid temperature has a rapid penetrating rate and high hardness for the diffusion layer. 化合物層隨催滲溫度升高而增厚,致密性提高;
- The relationship of the process parameters to the depth of diffusion, concentration of titanium in the diffusion layer and the microstructure of titanizing layer are studied. 探討了工藝參數與滲層厚度的關(guān)系,滲鈦層組織特征,滲層鈦濃度分布。
- Experiment results showed that the process of Hot Dip Aluminum and complex Boronisation on the A3 surface is feasible, it had a continuous layer between diffusion layer and matrix and a better hardness gradient. 試驗表明 :A3鋼表面浸鍍擴散滲鋁復合滲硼工藝可行 ,滲層與基體形成了連續的擴散層 ,并且具有良好的硬度梯度。
- To study the effect of microstructure of porous gas diffusion layer(GDL) in proton exchange membrane fuel cell(PEMFC) on simulation, an effective method must be used to express the microstructure. 為了研究質(zhì)子交換膜燃料電池擴散層多孔材料微結構對仿真結果的影響,首先必須找出一種有效的方法來(lái)描述其微結構。
- When the width of the channel is unchangeable, the more are the numbers of the channels, the narrower the channel becomes, the evener the oxygen on the surface of diffusion layer becomes. 當流道寬度不變時(shí)，流道數目越多，流道間隔越窄，越有利于氧氣在擴散層表面上的均勻化分布。
- The membrane electrode assembly (MEA) in proton exchange membrane fuel cell (PEMFC) was composed of the proton exchange membrane, catalyst layer, water management layer(WML) and diffusion layer. 摘要質(zhì)子交換膜燃料電池(PEMFC)的膜電極(MEA)由質(zhì)子交換膜、催化層、水管理層(WML)和擴散層組成。
- A new technique of ion S-N-C co-diffusion with argon bombardment was presented for HSS .An investigation was made on temperature and time of bombarding which effects the diffusion layer. 介紹了高速鋼離子硫氮碳共滲復合氬轟擊處理工藝,對氬轟擊溫度、時(shí)間對共滲層的影響進(jìn)行了初步研究。
- The oxygen react vigorously with the impurity in the iron. 氧氣與鐵中的雜質(zhì)發(fā)生劇烈的化學(xué)反應。
- Diffusion layers of different steel samples were obtained by the chemical heat treatment of carbonizing, boronizing and sulphurizing. 研究了不同含碳量的鋼件經(jīng)滲碳、滲硼、滲硼+滲硫等化學(xué)熱處理后,獲得的表面滲層對鋼件彎曲斷裂強度和撓度的影響。
