pit corrosion 中文意思是什麼
pit corrosion
解釋
點蝕-
The relationship between capacitance and corrosion conditions in the enlargement of tunnels justifies the latter competition mechanism the varied etching conditions were implemented by enhancing the passivating characteristics and viscosity, changing the a13 + concentration, temperature of etchants and current pulsation. passivating acid in the etchant is conducive to the instant passivation of exposed areas on the foil surface, and hence sustains the balance of competition between aggressive anions and passivators, providing pit nucleatiori sites continuously
通過侵蝕液中添加草酸、硫酸、乙二醇，改變侵蝕液al ~ （ 3 + ）濃度和電流紋波等方法，研究了不同的侵蝕條件對隧道孔形貌和比容的影響，結果表明：草酸和硫酸既保護了鋁箔表面又促進了隧道孔孔壁的迅速鈍化，增加發孔密度。 -
Effect of steel pit on the mechanical property was discussed in succession. numerical results show that exponential relation exists between the yield strength and depth of corrosion pit. the work in this part is the theoretical foundation on the study in modeling of constitutive behavior of the corroded concrete and rusty rebar
基於微觀腐蝕機理分析了硫酸鹽介質對混凝土的膨脹性腐蝕作用，從理論上研究了由於膨脹作用引起混凝土內部產生的膨脹應力；討論了鋼筋表面銹蝕坑對鋼筋力學性能的影響，建立了鋼筋屈服強度與蝕坑深度之間的關系；為受腐蝕混凝土和銹蝕鋼筋本構關系的建立提供了一定的理論基礎。 -
Using extremum statistical method to predict pit corrosion sizes of the pipeline in service and further to evaluate the residual strength of the pipeline has a great significance for controlling accidents of corrosive perforations, guiding pipeline rehabilitation and replacement as well as prolonging service life of pipeline
長輸管道的腐蝕類型多為均勻腐蝕或點腐蝕，採用極值統計方法對在役管道的點蝕尺寸進行預測，進而評價管道的剩餘強度，對于控制管道的腐蝕穿孔事故、指導管道的修復更換、延長管道的使用壽命具有重要意義。 -
This paper discusses the statistical rule of maximum corrosive pit depth and determination method of extremum estimation for local corrosion depth, and presents a practical example of calculation
文章討論了管道最深點蝕孔深度的統計規律以及局部腐蝕深度最大極值估計值的確定方法，並給出了實際算例。 -
Firstly, the basic character of the remote filed eddy current is simulated and analyzed in case of two - dimension axial symmetry which approves the existence of remote filed eddy current phenomenon ; the full circumferential defect model is investigated to approve the feasibility of using the rfec techniques to detect the position and depth of defect ; the pit corrosion 、 circumferential and axial crack models are simulated, and the defect character based on voltage plane polar plot and the changes of phase and amplitude are analyzed to supply the standard for defect reconfiguration
首先，在二維軸對稱情況下模擬與分析了遠場渦流的基本特性，證實了遠場渦流現象的存在;對全周向缺陷的遠場渦流檢測進行了詳細研究，證實了遠場渦流檢測缺陷位置和深度的可行性;對點狀腐蝕、軸向與周向裂紋三種非軸對稱缺陷進行三維有限元模擬，利用相位差和幅值變化曲線與電壓平面極坐標圖對缺陷特徵進行分析，為缺陷形狀重構提供了依據。 -
Eds suggests the nc copper surface containing o and cl, but no other element except cu and c could be found on mc copper surface. fegsem images revealed that mc copper exhibits uniform corrosion but the pit on the surface of nc copper is discrete
浸泡實驗后的xrd分析發現納米晶銅表面有cu _ 2o ，但微米晶銅表面沒有氧化物。 eds分析表明納米晶銅表面含o和cl ，但微米晶銅表面卻只有cu和c 。
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