• 结果表明电位振荡现象由于蚀孔形成所引起

    Experimental results showed that the electrochemical oscillation was caused by the salt film formed within pits.

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  • 钛合金ta7盐酸-甲醇溶液中的应力腐裂纹源自蚀孔底部

    It shows that the SCC susceptibility occurs in methanol solution. SCC of TA7 originates from the...

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  • 海船压载使用海水压载,引起船体焊缝处会产生漏水

    The use of sea water in ballast water tank of sea-going ships causes the corrosion of ship hull plates and the water leak from the corroded holes at welding seams.

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  • 蚀孔峰值电流电位服从对数正态分布电位升高而增大。

    The peak currents for metastable pits also follow lognormal distribution and rise with potential.

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  • 选择两种具有不同类型硫化物夹杂碳钢通过模拟的闭塞腐电池试验,研究它们人工海水中的扩展行为

    Using OCC simulation test, behavior of pitting propagation of two carbon steels for shipbuilding with different sulfide inclusions in synthetic seawater was studied.

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  • 应用重压滑动摩擦耐热耐磨零件内燃机汽缸内腔活塞环等。

    Loose hole plating chromic layer by weight used in the sliding friction parts and heat resistance, corrosion, wear parts, such as internal combustion engine cylinder lumen, piston rings.

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  • 模拟中水中,随着浓度增加,316不锈钢电位减小

    The pitting corrosion potential of 316 stainless steel increases along with the ammonia nitrogen density decrease.

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  • 工作应用表面分析技术研究工业溴化钠溶液中的引发过程

    The pit initiation process on commercially pure titanium in bromide solution was investigated by means of surface analysis.

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  • 探索了地层倾角源距声波电阻率、三隙度系数识别储集空间类型以及对储层分类方法

    The methods to identify the types of reservoir by using such parameters as dipmeter, long space sonic, resistivity, porosity and alteration factor are studied.

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  • 能量密度达到造成液态质量迁移条件的长脉冲激光获得较大面积较大

    A long-pulse laser, whose energy density can cause the liquid mass transferred, can get a greater ablation ratio and a hole with larger cross section.

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  • 研究表明,各环境因子不锈钢稳态稳态特征参数都有一定影响其中离子浓度综合环境因子的影响作用比较显著

    The environmental factors influenced the behavior of metastable pitting and stable pitting, of which the concentration of Br- and the general environmental factor had the remarkable effect.

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  • 研究X70磷酸盐缓冲溶液中的亚稳态与稳态电化学行为特征

    The electrochemical characteristics of pitting corrosion of X70 pipeline steel in phosphate buffer solution were studied in this paper.

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  • 与此同时应力活性阴离子氧化膜的破坏造成

    At the same time, stress and active anion will destroy the oxidic film.

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  • 结果表明,离子使电位提高,改善提高了抗性能。

    It was proved that pitting potential become more noble and pitting resistance was improved after ion plating.

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  • 介绍端面直接并进行等温处理新型抗点挺杆体的结构热处理工艺;

    The construction of a new type anti-pitting tappet with a cast hole in its end face and isothermally treated are described.

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  • 形貌呈现特征

    Morphology of corrosion presents pitting corrosion character.

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  • 特别溶解氧浓度有差别的场合,电池引起严重导致

    Severe corrosion, leading to pitting, is often caused by concentration cells, particularly where differences in dissolved-oxygen concentration occur.

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  • 同时电化学诱导退火处理不锈钢中的敏感性影响结果表明:电化学诱导退火可以提高304L不锈钢在酸中的性。

    The pitting sensitivity of stainless steel to acid is studied and result shows that the EIA treatment promotes the corrosion resistance of the 304l stainless steel to acid.

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  • 本文研制一种耐酸对封材料的配比进行了优化。

    In the article, an sealant with corrosion resistance was developed, and its sealing allocated parameters were optimized.

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  • 扩展机理研究考虑酸滤失计算模型研究则显得尤为重要

    Therefore, the acid wormhole propagation mechanism study and the novel calculation model for the acid leak-off in the acid fracturing is more important.

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  • 带上涂层阴极性涂层,的主要形式

    Nickel coatings on the steel strip are cathodal coatings, and the hole erode is the main erosion mode.

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  • 醋酸中含溴加剧金属

    The existing of bromine in acetic acid could aggravate corrosion on metal hole.

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  • 滤失排量、酸液粘度、酸液浓度时间以及有密切关系。

    The acid wormhole leak-off volume is concerned with the pumping rate, the acid viscosity, the acid concentration, acid injection time and the formation physical property.

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  • 简化为单圆管模型酸液流动反应物质平衡方程反应传质扩散作用。

    Acid flow and reaction in a wormhole was studied by modeling the wormhole as a cylinder and numerically solving the mass balance equation that describes acid transport by convection and diffusion.

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  • 模型主要包括井筒流动模型不稳定储层流动模型、液体界面移动模型和模型

    The models was established of the following components: wellbore flow model, unstable reservoir flow model, the fluid interface movement model, acid etching wormhole model and etc.

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  • 选择三种典型碳钢、低合金钢通过极化试验比较它们之间诱发敏感性模拟的“闭塞腐电池”,试验研究它们之间的扩展行为

    Their susceptibility to pitting has been compared by means of polarization test, and their behavior of pitting propagation has been studied with OCC simulation test.

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  • 岩心驱替实验表明:基质渗透率碳酸岩心,很难形成穿透

    Through single rock test shows that: for carbonate rock with very low permeability, it is hardly can form deep penetrated wormhole.

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  • 长期以来难以控制酸化压裂施工造成不良影响主要原因明确酸发育机理。

    The main reason why the bad influence of acid wormhole on acid fracturing execution is hardly controlled in a long time, is that we do not master the acid wormhole propagation mechanism.

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  • 长期以来难以控制酸化压裂施工造成不良影响主要原因明确酸发育机理。

    The main reason why the bad influence of acid wormhole on acid fracturing execution is hardly controlled in a long time, is that we do not master the acid wormhole propagation mechanism.

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