结果表明,电位振荡现象是由于蚀孔内形成盐膜所引起的。
Experimental results showed that the electrochemical oscillation was caused by the salt film formed within pits.
钛合金ta7在盐酸-甲醇溶液中的应力腐蚀裂纹源自点蚀孔底部。
It shows that the SCC susceptibility occurs in methanol solution. SCC of TA7 originates from the...
海船压载舱使用海水压载,引起船体板的腐蚀,焊缝处会产生蚀孔漏水。
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.
亚稳蚀孔的峰值电流在恒电位下也服从对数正态分布且随电位升高而增大。
The peak currents for metastable pits also follow lognormal distribution and rise with potential.
选择两种具有不同类型硫化物夹杂的碳钢,通过模拟蚀孔的闭塞腐蚀电池试验,研究了它们在人工海水中的孔蚀扩展行为。
Using OCC simulation test, behavior of pitting propagation of two carbon steels for shipbuilding with different sulfide inclusions in synthetic seawater was studied.
松孔镀铬层应用于受重压的滑动摩擦件及耐热、抗蚀、耐磨零件,如内燃机汽缸内腔、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.
在模拟中水中,随着氨氮浓度的增加,316不锈钢的孔蚀电位减小。
The pitting corrosion potential of 316 stainless steel increases along with the ammonia nitrogen density decrease.
本工作应用表面分析技术研究了工业纯钛在溴化钠溶液中的孔蚀引发过程。
The pit initiation process on commercially pure titanium in bromide solution was investigated by means of surface analysis.
探索了用地层倾角、长源距声波、电阻率、三孔隙度及蚀变系数识别储集空间类型以及对储层分类的方法;
The methods to identify the types of reservoir by using such parameters as dipmeter, long space sonic, resistivity, porosity and alteration factor are studied.
能量密度达到造成液态质量迁移条件的长脉冲激光,可获得较大的烧蚀率和截面积较大的通孔。
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.
研究表明,各环境因子对不锈钢稳态孔蚀及亚稳态孔蚀特征参数都有一定的影响,其中溴离子浓度和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.
研究了X70钢在磷酸盐缓冲溶液中的亚稳态与稳态孔蚀的电化学行为特征。
The electrochemical characteristics of pitting corrosion of X70 pipeline steel in phosphate buffer solution were studied in this paper.
与此同时,应力和活性阴离子对氧化膜的破坏造成孔蚀;
At the same time, stress and active anion will destroy the oxidic film.
结果表明,离子镀使孔蚀电位提高,改善和提高了抗孔蚀性能。
It was proved that pitting potential become more noble and pitting resistance was improved after ion plating.
介绍了端面直接铸孔并进行等温处理的新型抗点蚀挺杆体的结构和热处理工艺;
The construction of a new type anti-pitting tappet with a cast hole in its end face and isothermally treated are described.
腐蚀形貌呈现孔蚀特征。
Morphology of corrosion presents pitting corrosion character.
特别在溶解氧浓度有差别的场合,浓差电池常引起严重腐蚀、导致孔蚀。
Severe corrosion, leading to pitting, is often caused by concentration cells, particularly where differences in dissolved-oxygen concentration occur.
同时电化学诱导退火处理对不锈钢在酸中的孔蚀敏感性影响的结果表明:电化学诱导退火可以提高304L不锈钢在酸中的耐蚀性。
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.
本文研制了一种耐酸蚀的封孔剂并对封孔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.
酸蚀蚓孔扩展机理研究和考虑酸蚀蚓孔滤失的酸压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.
钢带上的镍涂层属阴极性涂层,孔蚀是腐蚀的主要形式。
Nickel coatings on the steel strip are cathodal coatings, and the hole erode is the main erosion mode.
醋酸中含溴会加剧金属孔蚀。
The existing of bromine in acetic acid could aggravate corrosion on metal hole.
酸蚀蚓孔滤失量与排量、酸液粘度、酸液浓度、注酸时间以及储层物性有密切关系。
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.
将酸蚀蚓孔简化为单圆管模型,酸液流动反应物质平衡方程反应传质和扩散作用。
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.
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酸蚀蚓孔模型等。
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.
选择三种典型的碳钢、低合金钢,通过极化试验比较了它们之间的点蚀诱发敏感性和模拟孔蚀的“闭塞腐蚀电池”,试验研究了它们之间的孔蚀扩展行为。
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.
单岩心驱替实验表明:基质渗透率很低的碳酸岩岩心,很难形成深穿透酸蚀蚓孔。
Through single rock test shows that: for carbonate rock with very low permeability, it is hardly can form deep penetrated wormhole.
长期以来难以控制酸蚀蚓孔对酸化压裂施工造成的不良影响,其主要原因是不明确酸蚀蚓孔发育机理。
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.
长期以来难以控制酸蚀蚓孔对酸化压裂施工造成的不良影响,其主要原因是不明确酸蚀蚓孔发育机理。
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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