巻号一覧
20 巻, 1 号
選択された号の論文の8件中1～8を表示しています
- |<
- <
- 1
- >
- >|
-
電解重合による金属表面処理の研究 (第2報)浅原 照三, 妹尾 学, 土屋 満1969 年 20 巻 1 号 p. 2-5
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーAdherent films of polymers on aluminum plate was formed by the electrolysis of vinyl monomers by using carbon as anode and the aluminum plate as cathode. Tetraethyl ammonium-p-toluene sulfonate was used as supporting electrolyte and no solvent was used. The electrolysis was carried out under a constant current. Vinyl monomers used for this investigation were acrylonitrile, methyl methacrylate, methyl acrylate, ethyl acrylate, vinyl acetate, styrene, and α-methyl styrate, Acrylonitrile and the mixtures of acrylonitrile with other vinyl monomers were electrolyzed. This paper reports the effects of current density and time of electrolysis on weight and thickness of the film. The heat of wetting and hydrogen overvoltage were measured, by which the quantity of film was evaluated. The molecular weight of the film was in a range of 1, 000-2, 000. The coulomb efficiency for film formation depended upon the kind of monomers used.抄録全体を表示PDF形式でダウンロード (532K) -
小浦 延幸, 向 正夫1969 年 20 巻 1 号 p. 6-13
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーAn acidic bath of simple electrolyte composition for electrolytic refining of tin was investigated with the object of obtaining a tin deposit of good adhesion. The effects of the addition of cationic surfactants to the bath was studied and the behavior of these additives was discussed.
The results obtained were summarized as follows.
(1) A tin deposit of good adhesion was obtained from the bath composition of 0.1mol/l SnCl2 and 0.25N HCl at 60°C. However, the optimum current density was very low as 0.16amp./dm2.
(2) When 0.5g/l dodecylpyridinium chloride was added to the bath of 0.1mol/l SnCl2 and 0.5N HCl at 60°C, a tin deposit of good adhesion was obtained under high current density (2.4amp./dm2) and at high current efficincy (99%),
(3) As the results of the studies on the effects of dodecylpyridinium chloride on the tin electrodeposition, the following conclusion was drawn.
(a) The additive is strongly polarized as CH3(CH2)11-N⊕ and has no secondary substituent.
(b) Adsorbed atom N is positioned in 6-member ring of plane structure.抄録全体を表示PDF形式でダウンロード (2397K) -
電気泳動塗装廃水の処理法に関する研究 (第二報)今井 雄一, 先生 貞三, 野村 滋男, 小沢 千尋1969 年 20 巻 1 号 p. 14-17
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーIn the previous paper, there were reported the studies on separation of flocks resulting from the coagulation of polyvalent metallic ions with cationic polymer coagulants and it was made clear that the flotation method was more effective than the sedimentation method.
In this pape, there are reported the results of continuous running test in the pilot and practical plants designed on the basis of the authors' fundamental studies.抄録全体を表示PDF形式でダウンロード (550K) -
光沢平滑シアン化銅メッキに関する研究 (第8報)藤野 武彦, 山本 良雄1969 年 20 巻 1 号 p. 18-23
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーThe internal stress in electrodeposited copper from cyanide baths is one of the very important factors since the copper is widely used as an undercoat for nickel and other platings. This paper reports the stress measured by Right Flat Strip method under various electrolytic conditions as well as various bath compositions and additives.
The results obtained were summarized as follows.
(1) There were little effects of bath compositions and other electrolytic conditions on internal stress.
(2) The addition of inorganic compounds (particularly the compounds, which seem to be deposited together with copper) increased the tensile stress with the increase in its amount of addition or increase in current density. However, the addition of a very small ammunt of lead compounds decreased the tensile stress.
(3) The addition of sulfur compounds containing free sulfur increased tensile stress with the increase in their amount of addition or increase in PR current density.
(4) The addition of most of organic compounds had no remarkable effects on the internal stress.抄録全体を表示PDF形式でダウンロード (717K) -
チタン族炭化物に関する研究 (第5報)杉山 幸三, 高橋 武彦1969 年 20 巻 1 号 p. 23-27
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーCorrosion resistivity of titanium carbide coated on iron in various corrosive gases was examined with a thermobalance at a constant rate of temperature elevation of 3°C/min.
For hydrogen chloride, the decrease in weight was not observed up to 1, 000°C. For chlorine, a sudden decrease in weight was found in a range of 460-500°C, which would be due to the rupture of surface oxide film followed by chlorination of titanium carbide and the substrate alloys. For hydrogen sulfide, striped protrusions were observed on some parts of the surface, which were considered to be iron sulfide; however., no change was seen in most parts of the surface up to 1, 000°C. For sulfur dioxide, rutile type oxide was found above 700°C. For oxygen, a linear relation was obtained above 650°C between the weight decrease and time, and the activation energy was found to be 26kcal/mol, which nearly agreed with that in the initial oxidation stage of titanium metal plate.抄録全体を表示PDF形式でダウンロード (1760K) -
電解重合による金属表面処理の研究 (第3報)浅原 照三, 妹尾 学, 土屋 満1969 年 20 巻 1 号 p. 28-31
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーDuring the surface treatment of metals by electrolytical polymerization, it was observed that the molecular weight of poly-acrylonitrile, which forms the adherent film, was decreased together with the increase in the number of its molecules in the presence of styrene. As the results of detailed investigation, it was confirmed that chain transfer reaction happened in the presence of styrene from reactive side of polymer to monomer. Then, the extent of the chain transfer was evaluated under many experimental conditions and also kinetic consideration was taken of these phenomena. It was further confirmed that the same chain transfer reaction as above also happened in the presence of benzene. It was presumed from these results that the chain transfer would be shifting of hydride, which was stabilized by benzene ring.抄録全体を表示PDF形式でダウンロード (501K) -
シュウ酸浴からのクロムメッキの研究 (第2報)江口 晴一郎, 城間 成信1969 年 20 巻 1 号 p. 31-36
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーIn an attempt to carry out the electrodeposition of black chromium from chromic acid-oxalic acid bath, several investigations were made by means of Hull cell test and plating test.
The results obtained were summarized as follows.
(1) The electrolyte was prepared by dissolving one or more of sulfuric acid, sodium fluosilicate, ammonium persulfate, sodium thiosulfate, ete. in chromic acid-oxalic acid solution and further dissolving nitric acid and its salts in the above bath. Black chromium plating having excelent throwing power and uniform color tone was obtained from the above electrolyte. It was important under these conditions that the concentrations of both chromic and oxalic acids in the bath should be kept constant during the electrolysis.
(2) When the temperature of electrolyte for obtaining black chromium plating was lower, the available range of current density was wider. The optimum current density was found in the range of 10-30amp./dm2.抄録全体を表示PDF形式でダウンロード (838K) -
山本 清文1969 年 20 巻 1 号 p. 37-41
発行日: 1969/01/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (689K)
- |<
- <
- 1
- >
- >|