查询词典 corrosion rim

During SCC of type 310 austenitic stainless steel in MgCl〓 solution at 115℃, corrosion process can enhance dislocation emission, multiplication and motion. Stress corrosion microcrack nucleates in the dislocation free zone or at the tip of the crack when the corrosion-enhanced dislocation emission and motion develop to the critical condition.

本文所得主要结论如下： 1.310不锈钢在沸腾MgCl〓溶液中SCC时，腐蚀过程能促进位错的发射、增殖和运动，当其达到临界条件时，SCC微裂纹就会在无位错区中不连续形核或从原裂纹顶端连续形核；由于介质的作用，纳米级微裂纹并不钝化成空洞和缺口，而是解理扩展。

Model occulted corrosion cell and other electrochemical methods were employed to study the characteristic ofbronze pit corrosion, the effects of dissolved oxygen、 pH and richened migrating of 〓 ion on the developmentof cavity in the simulated electrolyte solution. Corrosion inhibition for chloride ion by1-phenyl-5-mercapto-tetrazole pre-film on bronze has been evaluated. The mechanism of interactionbetween PMTA and the bronze surface has been studied by means of AES and XPS techniques.

采用&模拟闭塞腐蚀电池&等电化学的方法，研究了青铜器粉状锈的孔蚀特征，以及模拟电解质溶液中溶解氧、pH值、氯离子的迁移富集对孔穴生长的影响，评价了1-苯基-5-巯基-四氮唑缓蚀膜抗氯离子腐蚀的性能，利用AES、XPS方法研究了PMTA青铜表面成膜作用的机理。

The corrosion preventions of urea prilling towers have inner corrosion and outer corrosion.

尿素造粒塔的腐蚀有内部腐蚀和外部腐蚀。

In allusion to the corrosion of different injected water sources to the steel part of line and pump and so on in the processof oilfield waterflood development, the corrosion of dissolved oxygen, pH value, sulfureted hydrogen and salinity in the injected waterto steel was experimented and researched by the test of measuring average corrosion percentage in the laboratory.

针对油田注水开发中不同注水水源对管线、泵等钢材质部位的腐蚀，在实验室通过平均腐蚀率测定试验，对不同水源中的溶解氧浓度、pH值、硫化氢含量和盐的矿化度等因素对钢材的腐蚀进行试验研究。

Through a study of the corrosion inhibition by polyarcylic acid and dodecylbenzyldimethyl ammonium bromide for pure iron in HCl solution, this paper presents the development of a new method not only for the rapid evaluation of the efficiency of a corrosion inhibitor, but also for the quantitatively determination of the type of corrosion inhibitor.

研究了聚丙烯酸、苯扎溴铵在工业纯铁／盐酸体系中的缓蚀性能，推导了一种既能快速测出腐蚀缓蚀剂的缓蚀效率又能确定腐蚀缓蚀剂类型的新方法，定义了能够确定腐蚀缓蚀剂类型的因子P。

The results showed that the two kinds of Ni-P electroless deposits are both amorphous. The phosphorus content in the deposit using lactic acid as complexing agent is 10.04%, and in the deposit using citric acid as complexing agent is 11.93%. As the Na2S content increases, the polarizability increases, and the corrosion current and corrosion potential decrease while the Na2S content is between 1.0%~2.5%. The corrosion resistance of Ni-P electroless deposit using lactic acid as complexing agent is better than that of another kind.

结果表明，利用两种络合剂形成的Ni-P镀层均为非晶态，其中以乳酸为络合剂的镀层中P含量为l0.04mass%，以柠檬酸为络合剂的镀层中P含量为11.93mass%，在1.0%~2.5% Na2S多介质中，随着Na2S多含量的增加，阳极极化曲线的极化率增大，自腐蚀电位和自腐蚀电流降低。

The object of the present paper was to study the relationship between corrosion fatigue crack growth rate da/dN and stress intensity factor amplitude ΔK of 07MnNiCrMoVDR steel by corrosion fatigue crack growth rate experiment in H2S solution. This steel is the typical material used in chemistry and oil chemistry equipment in our country. Corrosion fatigue safety assessment method of pressure vessels with defects in service could be explored and investigated.

本文研究通过对我国化工和石油化工装置中的典型材料07MnNiCrMoVDR钢在腐蚀介质H2S水溶液中疲劳裂纹扩展速率的研究，寻找其腐蚀疲劳裂纹扩展速率da/dN和应力强度因子幅值ΔK之间的关系，探索研究在役含缺陷压力容器腐蚀疲劳安全评定技术。

Ceramic bearings can produce oxidation-ho, silicon carbide, silicon nitride and so on, diameter from 3mm-50mm, precision Machinable P0, P6, P5 level; its performance characteristics are: high temperature, oil-free self-lubricating, acid, alkali and salt corrosion , wear resistance, low noise, insulating diamagnetic, since high-speed operation; metal nano-ceramic bearing its production process for a new generation of high content of nano-particles in the heat and pressure infiltration of metal surface is activated to fill the cracks and pits the metal so that 3-5 micron metal surface is more smooth solid surface, greatly reduce the friction, improve Chennai base metals, and greatly increased the life span of bearings, and its characteristics are: long life (as an ordinary stainless steel bearings 2 -- 10-fold), low noise (as an ordinary stainless steel bearings, 70%), wear-resisting, acid, alkali, salt corrosion, high temperature, load large; ceramic bearing and metal nano-ceramic bearing design and development to meet the needs of the market for high-speed, low - noise, high load, the demand for corrosion-resistant; Machinery Production Department to produce aircraft rod end joint bearing, linear guide bearings, the fuel tank of earrings, plastic bearing, non-standard side bearing components, glass door hardware, such as high-precision control products; and provide CNC machining.

陶瓷轴承可生产氧化镐、碳化硅、氮化硅等，内径从3mm-50mm，精度可加工P0、P6、P5级；其性能特点为：耐高温、无油自润滑、耐酸、碱、盐腐蚀、耐磨、低噪音、绝缘抗磁、起高速运转；金属纳米陶瓷轴承其生产工艺为新一代的高含量纳米级微粒在热和压力的作用下被激活渗入金属表面，填补金属缝隙和凹坑，使金属表面3-5微米表面更光滑坚固，大大降低其摩擦力，提高金属的奈酸碱性，并大大提高了轴承的寿命，其特性为：长寿命（为普通不锈钢轴承的2-10倍）、低噪音（为普通不锈钢轴承的70%）、耐磨、耐酸、碱、盐腐蚀、耐高温、负载大；陶瓷轴承与金属纳米陶瓷轴承的设计开发以满足市场对高转速、低噪音、高负载、耐腐蚀的需求；机械生产部以生产机杆端关节轴承、直线导轨轴承、油缸耳环、塑料轴承、非标端轴承零部件、玻璃门控五金等高精度产品；并对外提供数控加工。

Metal corrosion in sulfuric aeid edw point is a common and very serious harm go the corrosion forms, in a wide range of production in all aspects of life, especially in some specific process unit operation equipment middle.low-temperature corronsion dew point in the general industrial rurnace, boiler, fuel saving edvices, air preheater, heat exchangers, tower refrigeration systems, dust, garbage incineration furnace, sintering furnace flue and chimney acid plant and the wind tunnels of hypothermia sife, yes containing gurnace flue and chimney acid plant and wind tunnels of hypothermia site, yes containing acidic gases produced by the condensation of cold treatment from the local cold drinks along with the liquid in the device, lesding to a very serious material corrosion.

金属材料的硫酸露点腐蚀是一种常见的，危害十分严重的腐蚀形式，广泛的发生在生产生活的各个方面，尤其发生在一些特定的过程单元操作设备中间。低温露点腐蚀一般发生在在工业加热炉、锅炉、燃料节省器、空气预热器、热交换器、塔顶冷凝系统、除尘器、垃圾焚烧炉、烧结炉、烟道，烟囱及酸厂的引风管道等的低温部位，是含酸性的气体经由该产遇冷冷凝下来的冷饮液局部地随着于设备上，从而造成对材料极严重的腐蚀。

Metal corrosion in sulfuric aeid edw point is a common and very serious harm go the corrosion forms, in a wide range of production in all aspects of life, especially in some specific process unit operation equipment middle.low-temperature corronsion dew point in the general industrial rurnace, boiler, fuel saving edvices, air preheater, heat exchangers, tower refrigeration systems, dust, garbage incineration furnace, sintering furnace flue and chimney acid plant and the wind tunnels of hypothermia sife, yes containing gurnace flue and chimney acid plant and wind tunnels of hypothermia site, yes containing acidic gases produced by the condensation of cold treatment from the local cold drinks along with the liquid in the device, lesding to a very serious material corrosion.

该下载资料由本站会员上传，如果侵犯了您的权力，请通知我们，将立即删除！摘要金属材料的硫酸露点腐蚀是一种常见的，危害十分严重的腐蚀形式，广泛的发生在生产生活的各个方面，尤其发生在一些特定的过程单元操作设备中间。低温露点腐蚀一般发生在在工业加热炉、锅炉、燃料节省器、空气预热器、热交换器、塔顶冷凝系统、除尘器、垃圾焚烧炉、烧结炉、烟道，烟囱及酸厂的引风管道等的低温部位，是含酸性的气体经由该产遇冷冷凝下来的冷饮液局部地随着于设备上，从而造成对材料极严重的腐蚀。

Given the language of section 102(2), the Supreme Court's rejection of substantive review under NEPA seems unjustifiable in principle

按照第102条的规定，最高法院否决《国家环境政策法》所规定的实质性复审在原则上似乎是不正当的。

ObjectiveTo explore the effect of variable hip abduction orthosis on children spastic cerebral palsy.

目的探讨髋关节矫形器在儿童痉挛型脑性瘫痪康复中的作用。