巻号一覧
13 巻, 10 号
選択された号の論文の7件中1～7を表示しています
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有機ハロゲン化物に対するアルミニウムの挙動に関する研究 (第3報)安川 三郎1962 年 13 巻 10 号 p. 419-423
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーAluminum is violently dissolved in the various liquid organic halides after induction period. In the present experiment, the amount of dissolution according to reaction period per unit surface area of aluminum plate was first observed, and it was found that the order of dissolution reaction was zero when carbon tetrachloride, trichloroethylene, tetrachloroethane etc. were emploied. In various halogenated hydrocarbons, aluminum was most violently dissolved, generating hydrogen halide gas. It seemed that catalytic action of aluminum halide is accompanied by that of hydrogen halide. By using carbon tetrachloride at higher temperature than 50°C dissolution velocity was very fast because of catalytic action of aluminum chloride. No obvious dissolution took place at lower temperature than 45°C even after 500 minutes of reaction period. The apparent activation energy of dissolution was also calculated and dissolution mechanism discussed.抄録全体を表示PDF形式でダウンロード (750K) -
装飾クロムメッキの耐食性に関する研究 (第5報)斎藤 囲, 中村 実1962 年 13 巻 10 号 p. 424-427
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーFrom the curves of cathodic and anodic polarization of composite metals except chromium in two kinds of multi-layer coating (copper-nickel-chromium and duplex nickel-chromium) in various corrosive solutions, local corrosion cell effect between copper and bright nickel as well as that between semibright nickel and bright nickel were presumed. The same types of corrosive solution as in the previous report were used.
Furthermore, open-circuit and closed-circuit corrosion rates of each couple were compared by means of corrosion loss weighing.
As a result, the following conclusions were obtained.
1. In copper-bright nickel cell, copper is cathodically protected effectively by bright nickel in sulfur oxide solutions. The same couple is less active in acid salt solution and almost ineffective in CASS Test solutions.
2. In duplex nickel cell, semibright nickel is effectively protected by bright nickel in any other solutions than sulfurous acid solution.抄録全体を表示PDF形式でダウンロード (550K) -
石田 武男1962 年 13 巻 10 号 p. 427-432
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーOne of the features of chromium plate is its extremely high hardness. In the present study, the hardness of chromium plated surface was measured by Vickers hardness tester and scratch hardness tester. It was found that both methods gave the same trend in the hardness of chromium deposit.
The hardness of the chromium deposit is greatly influenced by the plating condition and heat treatment. Investigated here are bath temperature, current density, composition of bath, and temperature of heat treatment.
The conclusions summerized are as follows.
The conditions suitable for the preparation of bright deposit were found to be favorable to obtain hard deposits.
The hardest deposit was produced when the ratio of CrO3/H2SO4 by weight was 70-80 in the solution containing 250g/l CrO3.
Upon heating to about 150-400°C, hardness of the bright chromium deposits decreased slowly. Rapid decrease in hardness was observed at about 400-600°C, and, after that, the decrease became more slowly. On the other hand, in regard to soft milky chromium deposits, rapid decrease in hardness occured at about 550-700°C or 700-850°C.抄録全体を表示PDF形式でダウンロード (881K) -
電子顕微鏡によるアルミニウム表面処理の研究 (第5報)赤堀 宏1962 年 13 巻 10 号 p. 433-437
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーFor coloring aluminum anodic oxide film it should be neutralized after anodizing, and alkali is generally used as neutralizing agent when it is anodized in sulphuric acid electrolyte.
To study the state of reaction between anodized surface and neutralizing agents such as NaOH, Na2CO3, Na3PO4, NH4OH, etc. and to compare the coloring, anti-fading and anti-abrasion according to agents, the surfaces before and after neutralizing and coloring were observed with electron microscope.
As a result, Na2CO3 was found to be the most effective neutralizing agent.抄録全体を表示PDF形式でダウンロード (3500K) -
南部 慶一1962 年 13 巻 10 号 p. 438-440
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (402K) -
中村 実1962 年 13 巻 10 号 p. 441-446
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (1346K) -
内田 大1962 年 13 巻 10 号 p. 447-453
発行日: 1962/10/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (1164K)
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