著者

高崎 新一 山本 大輔

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.37, no.12, pp.751-757, 1988-12-15 (Released:2009-10-30)

参考文献数

20

被引用文献数

1 1

---

The practical treatments of environment conditioning and inhibitors for corrosion controlling are described. It is in principle possible to prevent corrosion by the removal of corrosive agents or by the addition of inhibitive agents. Desicants are used to reduce relative humidity which is the most important factor of corrosion in gas phase. In aqueous systems the environments can be made less aggressive by removal of dissolved oxygen, adjustment of pH, or deionization. Inhibitors are classified as volatile, water soluble, or oil soluble. Environment controls to reduce corrosion in boiler water systems, cooling water systems, and petroleum refining processes are also given.

著者

佐藤 成美

出版者

社団法人 腐食防食協会

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.9, no.2, pp.79-80, 1960-02-25 (Released:2009-11-25)

著者

北田 正司

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.39, no.1, pp.26-32, 1990-01-15 (Released:2009-10-30)

参考文献数

10

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Wood has been one of most useful materials and resources as well as metal, stone, clay and etc. since the ancient times. However it has the defects of its own qualities, one of them is well-known “wood decay”. So called “wood decay” is not merely physical or chemical degradation but a bio-deterioration caused by wood destroying fungi. Wood preservation is the most available techenology to protect wooden materials from decay.

著者

高橋 教司

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.10, no.9, pp.398-400, 1961-09-15 (Released:2009-11-25)

参考文献数

1

---

Kraft papers containing various amounts of Cl- and H+ were prepared in laboratry. A piece of the papers was put between two pieces of mild steel and the corrosive was tested under 40°C, 90% R. H. and room temperature. Corrosive action was evaluated by the measurement of rust degree of iron and steel specified by Japanese Industrial Specification.Results obtained were as follows:1) The allowable limit of Cl- is about 0.4mg per 1g of material and beyond the limit, a proportional relation between Cl- concentration and R was established, where R is rust degree of mild steel.2) The allowable limit of H+ concentration is approx. 6 in pH and in acid range, log R is proportional to pH value.

著者

山本 洋一

出版者

社団法人 腐食防食協会

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.11, no.7, pp.304-307, 1962-07-15 (Released:2009-11-25)

著者

田中 義信

出版者

社団法人 腐食防食協会

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.10, no.12, pp.538-543, 1961-12-15 (Released:2009-11-25)

著者

中島 博志

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.33, no.6, pp.349-355, 1984-06-15 (Released:2009-10-30)

参考文献数

12

被引用文献数

2 2

---

Rapid corrosion of buried utility pipes for buildings is caused by macro-cells, most of which are formed between the pipes (anode) and rebars in concrete (cathode).Usually, installing insulating coupling would get good result, but if there is a liquid having electrical conductivity, jumping current must be treated.The jumping current could be treated by extending insulating length of insulating coupling.But some special case a Steel Earth would be needed for the treatment.

著者

R. K. Hart J. K. Maurin 小泉 達也

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.14, no.12, pp.553-563, 1965-12-15 (Released:2009-11-25)

参考文献数

22

著者

川本 輝明

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.33, no.8, pp.478-479, 1984-08-15 (Released:2009-10-30)

参考文献数

4

著者

古川 和男 二瓶 勲

出版者

社団法人 腐食防食協会

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.18, no.11-12, pp.503-511, 1969-12-15 (Released:2009-11-25)

参考文献数

19

被引用文献数

1

著者

高橋 秀明 庄子 哲雄 鈴木 正彦

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.28, no.5, pp.292-302, 1979-05-15 (Released:2009-10-30)

参考文献数

16

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Based upon linear elastic fracture mechanics approach, a damage tolerance design philosophy for light water reactor pressure vessel and piping components where the presence of a significant crack is acceptable, was reviewed with special reference to stress corrosion cracking and corrosion fatigue subcritical crack growth.The published data of failure analysis were discussed from a viewpoint of fracture mechanics evaluation. Here, weld toe cracking in crude oil pipe-lines in Canada, and corrosion-pit initiated cracking in low pressure turbine discs at Hinckley Point ‘A’ and turbine shafts at Ferrybridge power stations in England were compared and discussed. Hence three parameters such as mechanical, metallurgical and environmental factors are taken into consideration.

著者

下郡 一利

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.30, no.6, pp.349-357, 1981-06-15 (Released:2009-10-30)

参考文献数

45

被引用文献数

7 4

---

Service experiences were summarized on the hydrogen absorption by titanium and factors affecting the absorption were analyzed and reviewed both on environmental side and metallurgical side. Some environmental conditions have been known to cause this absorption but further investigations are still needed in the future. Several preventive methods, such as surface oxidation treatment, have been applied with satisfactory results in some cases.

著者

吉田 平太郎

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.33, no.7, pp.409-416, 1984

著者

山下 嗣人

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.36, no.5, pp.315-316, 1987-05-15 (Released:2009-10-30)

参考文献数

6

著者

石原 靖子 奥村 浩

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.39, no.8, pp.432-440, 1990-08-15 (Released:2009-10-30)

参考文献数

10

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Recently, scientific interest to plastic materials has been grown as the important materials in the various fields of biology. However, these materials are not always utilized efficiently. There are various levels of utilization among various fields of biology. In this paper, present situation and problems of the utilization of plastic materials was discussed concentratedly focusing in the fields of neural cell culture and fish farming.

著者

青山 芳夫

出版者

Japan Society of Corrosion Engineering

雑誌

防蝕技術 (ISSN:00109355)

巻号頁・発行日

vol.12, no.4, pp.185-187, 1963-04-15 (Released:2009-11-25)

参考文献数

15

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The relays for railway signaling systems are abnormally attacked, when they are used under such conditions that electric discharges frequently take place on the surfaces of their contact points. As the corrosion products, silver nitrate (AgNO3) and basic copper nitrate [3Cu(OH)2⋅Cu(NO3)2] are formed on the surfaces of silver contacts and nickel coated bronze springs respectively. For the identification of these corrosion products, the interference and absorption procedures are found to be suitable.

著者

佐々木 英次 中原 東郎 神田 幸雄 大里 一夫 栂野 秀夫

出版者

社団法人 腐食防食協会

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.26, no.3, pp.125-132, 1977

被引用文献数

2

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The corrosion behavior of mild steel was investigated in a culture where hydrogen gas was bubbled. A dual cell system was employed. That is, in the first cell the bacteria produced hydrogen sulfide, which was introduced into the second cell by hydrogen gas. The bacteria were cultured in autotrophic or heterotrophic conditions. The electrode potential and polarization resistance of the specimens in both of the cells were measured. The variations of electrode potential and corrosion rate of the steel in both of the cell could be explained, corresponding to the variation of the concentration of hydrogen sulfide. The weight loss of the steel in the first cell was smaller than that in the second cell. There was no evidence that hydrogen depolarization by the bacteria occured. It seems to be more resonable that the anodic and catholic reactions were stimulated catalytically by hydrogen sulfide, not by the bacteria. On the other hand, in autotrophic condition, the bacteria could not grow so much, and the amount of biogenic hydrogen sulfide was much smaller than that in heterotrophic condition. Organic substances is necessary for the biosynthesis of the bacteria and for the great evolution of hydrogen sulfide. Therefore, in order to prevent the corrosion by the bacteria, in practice, a desalting plant ought to be designed to eliminate organic substances as much as possible.

著者

大境 彰

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.36, no.12, pp.799-805, 1987-12-15 (Released:2009-10-30)

参考文献数

6

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The problem concerning electrolysis corrosion of pipe line caused by stray current from DC electrified railroad was fairly solved by appling drainage method. In this report next item is explained. (1) Leakage current from railroad and electrolysis corrosion. (2) Construction of drainage method. (3) Recent problem of them.

著者

筒井 光範

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.34, no.9, pp.526-527, 1985

著者

松本 桂一 篠原 孝順 笠松 昭宏

出版者

Japan Society of Corrosion Engineering

雑誌

防食技術 (ISSN:00109355)

巻号頁・発行日

vol.33, no.11, pp.643-648, 1984-11-15 (Released:2009-10-30)

参考文献数

13

被引用文献数

1 2

---

As corrosion failures of 316L in urea synthesis solutions are due to either the active region dissolution or the corroison at the transition zone from the passive to the transpassive region, effects of process variables of the urea reactor on these two types of corrosion were electrochemically examined in order to advance the reliability of corrosion preventive methods. For making simple methods to evaluate resistance of 316L to the corrosion at the transition zone from the passive to the transpassive region, seven 316L specimens were immersed in an urea synthesis solution and the results were discussed by comparison with the results of Huey test and chemical compositions of the test specimens. The conclusions obtained are as followws.(1) 316L for the urea reactor required more amount of air to be injected for preventing active dissolution as the temperature of the reactor rose or the molar ratio of H2O/CO2 increased.(2) Sulfide, an impurity in CO2 gas, had a very detrimental effect on passivation of 316L. As it is not practical to compensate the harmfulness of sulfide by increase of the amount of air injection, the content of sulfide in CO2 gas should be lowered before feeding to the urea plant.(3) For reducing the corrosion at the transition zone from the passive to the transpassive region, higher molar ratio of NH3/CO2, lower ratio of H2O/CO2 and lower temperature were advantageous.(4) Sulfide was also harmful to this corrosion.(5) Annealed 316L was subject to weight loss owing to general corrosion and intergranular corrosion simultaneously at the transition zone from the passive to the transpassive region. Resistance of 316L to these two types of corrosion were correlated with Cr content in 316L and results of Huey test, respectively.