查询词典 corrosion

Two kinds of high aluminum alloys were not suffered from both intergranuler corrosion and stress corrosion craking when the aluminum overlayer was perfact.

两种包铝高强铝合金板材在包铝层完好时均对晶间腐蚀和应力腐蚀裂开的敏感性差。

Zn-La alloys increase the overpotential ofhydrogen evolution, Tafel slope 〓 and polarization, decrease the corrosion current density, inhibitthe corrosion of zinc electrode in alkaline solution, decrease anode Tafel slope 〓, promotedischarge reaction of zinc electrode, have higher passivation current density, inhibit thepassivation of zinc electrode, avoid the oversaturation of zincate in electrolyte, greatly increase〓 diffusion coefficient, decrease Tafel slope 〓, polarization and the overpotential of deposition,inhibit the dendrites formation and improve the electrodepostion of Zn.

实验结果表明，Zn-La合金电极显著改善了锌电极的各项电化学性能：提高析氢过电位、析氢过程Tafel斜率〓和极化，减小腐蚀电流密度，抑制锌电极在碱液中的腐蚀；降低阳极Tafel斜率〓，促进了锌电极的放电反应；具有较高的维钝电流密度，抑制锌电极的钝化；有效避免了溶液中锌酸盐的过饱和现象：使〓的扩散系数明显增大：降低Zn沉积过程的Tafel斜率〓、极化和沉积过电位，明显抑制锌枝晶的生长，改善了锌的电沉积性能。

The pitting potential and the free corrosion potential varied with aging time parabolically, however,the critical potential for intergranular corrosion linearly.

而点蚀电位和自腐蚀电位随时效时间呈抛物线变化，晶间腐蚀的临界电位则呈直线变化。

The test result shows that the mechanical properties of the dual-phase structure are much higher than those of ferritic plus pearlitic structures, that the dual-phase structure is of better corrosion resistance in some cases for Ca_2 has corrosion-moderating effects, and that hot-rolling dual-phase structure of the low-carbon Mn-Si steel wit...

试验结果表明：双相组织的力学性能远高于通常的铁索体+珠光体组织；在一定条件下，双相组织具有更好的耐蚀性，Ca_2有明显的缓蚀作用；采用台阶淬火工艺，不含Cr、Mo的低碳锰硅钢也易于获得热轧双相组织。

Rotary coupon test has been used to study corrosion inhibition of PESA, it has been found that when PESA was used separately, it has some effect of preventing corrosion.

采用动态旋转挂片法研究了PESA的缓蚀性能，发现PESA单独使用时对碳钢即有较好缓蚀作用，其缓蚀作用的本质是在材质表面生成了吸附膜，具有最佳缓蚀效果的分子量范围在750－1000。

Aiming at the quality of copper(HSn-70A),the corrosion inhibition capacity of single PESA is studied. Its composite prescription is developed. The optimum composite scheme is selected as 10 mg/L PESA+ 0.5 mg/L BTA+2 mg/L Zn2++ 10 mg/L sodium gluconate. The corrosion rate of copper is only 0.000 5 mm/a under this condition.

针对凝汽器铜材质(HSn-70A)研究了单一聚环氧琥珀酸的缓蚀性能，开发了与之复配的复合配方，筛选出的最佳复配方案为10 mg/L PESA＋0.5 mg/L BTA＋2 mg/L Zn2+＋10 mg/L葡萄糖酸钠，在此条件下铜的腐蚀率仅为0.000 5 mm/a。

Synergistic corrosion inhibition effect of polyepoxysuccinic acidand zinc ion on carbon steel was studied with hanging slice dynamic test;and the synergistic corrosion inhibition effect of PESA and benzotriazoleon copper was also studied.

用旋转挂片法研究了聚环氧琥珀酸与锌盐复配对碳钢缓蚀作用的协同效应；同时研究了聚环氧琥珀酸与苯并三氮唑的复配对黄铜的缓蚀协同效应。

Through the analysis of the alloy electroplating solution in gradients, the process variables and their relationship between content of manganese in the alloy coating, the optimum process has been obtained, the additive to improve the cathode current efficiency was found; it was found that the deposits with a manganese content 40～60% exhibit excellent corrosion resistance; the corrosion resistance of zinc-manganese alloy coating will be even better after"phosphated"and passivated.

研究发现Na〓SeO〓能显著提高锌锰合金电沉积电流效率。首次用循环伏安法、恒电势电解法、恒电流阶跃法研究了Na〓SeO〓提高电流效率的作用机理。研究发现Na〓SeO〓在锌锰共沉积的条件下在阴极是分两步还原，即：首先在-0.9V处被还原为单质硒，然后在-1.25V处被还原为多硒阴离子。证明了多硒和多硒阴离子都在阴极存在特性吸附

The observation of the metallographic structure of the cracks and analysis of the corrosion product determines that culprit of the cracking is polythionic acid stress corrosion.

中国石化股份有限公司天津分公司加氢精制高压分离器接管使用8个月后相继发生开裂，经裂纹金相组织形态观察和腐蚀产物成分分析，确定开裂原因系连多硫酸应力腐蚀引起。

In order to ascertain the causes and mechanisms of corrosion and abrasion failure,the demonstration analyses and experiments such as macro/microscopy and corrosion substance composition analyses were carried out on the broken section of the man-hole door of refeed valve and air-hood .

重点对返料阀入孔门盖及风帽吹气管断口的宏微观形貌、微区成分、腐蚀物组成等进行表征分析和试验，确定腐蚀磨损产生的原因及腐蚀机理；最后根据实际状况，提出相应的预防措施和建议。

Add it into your food such as to yogurt, cottage cheese and such.

你可以把它加入到像酸奶、奶酪一类的食物中一起进食。

The man was rescued about three hours later when his partner arrived home, SAPA said.

SAPA说，这为男子在三个小时后妻子回家后被解救