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、苯扎溴銨在工業(yè)純鐵／鹽酸體系中的緩蝕性能插入下体视频，推導了一種既能快速測出腐蝕緩蝕劑的緩蝕效率又能確定腐蝕緩蝕劑類型的新方法，定義了能夠確定腐蝕緩蝕劑類型的因子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.

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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.

本文研究通過對我國化工和石油化工裝置中的典型材料07MnNiCrMoVDR鋼在腐蝕介質(zhì)H2S水溶液中疲勞裂紋擴展速率的研究，尋找其腐蝕疲勞裂紋擴展速率da/dN和應力強度因子幅值ΔK之間的關系日韩一区二区三区免费拍拍，探索研究在役含缺陷壓力容器腐蝕疲勞安全評定技術99性爱精品视频网。

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.

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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.

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Medium added inhibitor, could slow down the corrosion of equipment and valves, such as chrome-nickel stainless steel in sulfuric acid containing no oxygen, the great state of cremation within the range of solubility, corrosion more serious, but a small amount of copper sulfate or nitric acid and other oxidants, can change the passive stainless steel surface generates a layer of protective film to prevent the medium of etching, in hydrochloric acid, if a small amount of oxidant, which reduces the corrosion of titanium.

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The durability of concrete structure in general air environment, including concrete carbonization mechanism and influencing factors, steel corrosion mechanism and influences to the structural mechanical performance, cracks of concrete caused by the expansion of corrosion and the relation between width of crack and amount of corrosion, and the life estimation of reinforced concrete structure. At the same time, the paper introduced durability paint for concrete of xichang Cable-stayed bridge.

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I plant for many years, in line with the principles of plant science and technology, constantly absorbing domestic and foreign advanced technology, has licensed development and production of water-stable family of scale and corrosion inhibitor, scale inhibitor dispersing agent series, scale and corrosion inhibitor compound series, cleaning , pre-membrane, corrosion series, Bactericidal Algicide series, Water Purifying Agent series, such as more than 60 varieties of six series of new water treatment agent, to carry out production and the introduction of the new century and the simultaneous development of new products, become a water treatment agent professional manufacturer, one of our products are widely used in electric power, chemical fertilizer, metallurgy, oil refining, chemicals, textiles, paper making industries such as circulating water system and boiler water treatment system.

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