巻号一覧
24 巻, 2 号
選択された号の論文の10件中1～10を表示しています
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スルファミン酸浴による鉄電着 (第8報)上野 浩, 林 宏, 高木 終司, 清水 泰, 三輪 滋, 林 禎一1973 年 24 巻 2 号 p. 62-66
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーThe properties of nickel-iron deposits were investigated, and the following conclusions were drawn:
(1) The stress was rapidly decreased by the addition of a very small amount of saccharin.
(2) The stress was increased with the increase in concentrations of urea and NH4HF2.
(3) The stress was decreased with the rise of temperature and the increase of pH value.
(4) At a current density of 20 Amp/dm2, the nickel contents of deposit and bath were slightly increased with the increase in time of electrolysis.
(5) The cathode efficiency was maximum at the current density of 20Amp/dm2, but the nickel content of deposit was maximum at 40Amp/dm2.
(6) The hardness was maximum at 10Amp/dm2; it was slightly increased with the increase in urea concentration.
(7) The sectional photomicrographs of deposits showed lamellar structures.
(8) The face-centered cubic crystal structure was produced by the rise of temperature and decreases of current density and pH value.抄録全体を表示PDF形式でダウンロード (1065K) -
小浦 延幸, 米田 登1973 年 24 巻 2 号 p. 67-73
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーThe effects of anions and agitating conditions on the corrosion of 18-8 stainless steel were studied by immersion tests and measurements of polarization curves.
The results obtained were as follows:
(1) The amount of corrosion in Cl- solution was much larger than that in ClO4- or SO42- solution and it increased with the increase of Cl- concentration up to 19, 000p.p.m.
The value of corrosion rate obtained from the polarization curves was in appreciably good accordance with that calculated by the immersion test for a long time.
(2) It was explained that the rest potential varied with the lapse of time; in particular, remarkably in Cl- solution.
(3) It was also explained that the temperature of Cl- solution and the agitating conditions of ClO4- or SO42- solution had great effects on the limiting current density for dissolution of iron. The effects of agitating conditions on the limiting current density for reduction of oxygen were theoretically analyzed, and the relation between the diffusion current (id) and angular velocity of rotation (ω) for a rotating cylindrical electrode was derived as follows;
id=Aω1/2
(4) The activation energy of corrosion was discussed and the singularity of Cl- was explained.抄録全体を表示PDF形式でダウンロード (998K) -
アルミニウムの陽極酸化皮膜に関する研究 (第8報)大久保 敬吾1973 年 24 巻 2 号 p. 74-82
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーThe previous papers described that the hardness and abrasion resistance of anodic oxide films on aluminum were increased by heat-and chemical treatments after their formation.
This paper describes the experiments for investigating the effects of heat-and chemical treatments on corrosion resistance of the films.
The results of experiments were as follows:
(1) The corrosion resistance of anodic oxide films in acidic or basic solutions was lower than those of aluminum and its alloys. However, it was remarkably improved by treating the films with boiling water or boiling solutions of sodium acetate or sodium silicate-nickel acetate (tow-stepped treating).
(2) Salt spray tests revealed that the corrosion resistance was generally decreased by heat-treatment, but it was improved by two-stepped treating with boiling solutions of sodium silicate and nickel acetate.
(3) The corrosion resistance was remarkably decreased with the rise of temperature by heat-treatment during CASS test exposure. These results were obtained in the films having a large number of crazings produced by treating with boiling water or boiling solutions of sodium acetate or sodium silicate-nickel acetate (two-stepped treating).抄録全体を表示PDF形式でダウンロード (3632K) -
流電陽極用アルミニウム合金に関する研究 (第7報)佐藤 栄一, 田村 寿康, 岡部 泰二郎1973 年 24 巻 2 号 p. 82-87
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーThe pitting and protection potentials for pure gallium in 0.5N NaCl solutions (pH=4, 6, 8, 10 and 12) were investigated by means of an apparatus consisting of a potentiostat and a high sensitive recorder. The results obtained were as follows:
(1) The pitting and protection potential for gallium in 0.5N NaCl solution (pH=4) was -0.30V (S.C.E.) and -0.753V (S.C.E.), respectively.
(2) The pitting and protection potential for gallium in 0.5N NaCl solution (pH=6) was -0.48V (S.C.E.) and -0.730V (S.C.E.), respectively.
(3) The pitting and protection potential for gallium in 0.5N NaCl solution (pH=8) was -0.45V (S.C.E.) and -0.720V (S.C.E.), respectively.
(4) The pitting and protection potential for gallium in 0.5N NaCl solution (pH=10) was -0.56V (S.C.E.) and -0.734V (S.C.E.), respectively.
(5) The pitting and protection potential for gallium in 0.5N NaCl solution (pH=12) was -0.26V (S.C.E.) and -0.922V (S.C.E.), respectively.抄録全体を表示PDF形式でダウンロード (776K) -
沖 慶雄, 森 文雄, 杉本 義之1973 年 24 巻 2 号 p. 87-90
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーPhotodegradations of polyvinyl chloride on various kinds of metal plates were studied by infrared spectroscopy.
Slight, but obvious distinctions were found among different kinde of base metals at absorbances of 1725-1 and 1775cm-1 of photo-exposed polyvinyl chloride films.
In the accelerated tests, all samples showed the increase of absorption caused by the carbonyl group within 100hrs.; in particular, the increase was rapid in the films on Zinc and Tin. Other samples, except those on Cobalt and Nickel, reached the equilibrium within 300hrs.
No remarkable differences were found on the surface of polyvinyl chloride films by scanning electrophotometry between the sample after outdoor exposure and that after acceleration by carbon arc.抄録全体を表示PDF形式でダウンロード (1015K) -
佐藤 栄一, 田村 寿康, 岡部 泰二郎1973 年 24 巻 2 号 p. 91-93
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (1790K) -
合金メッキの研究 (第3報)神戸 徳蔵, 矢島 勝司, 篠原 長政1973 年 24 巻 2 号 p. 94-95
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (220K) -
超高エネルギ密度ビーム熱源とその応用 (上)荒田 吉明1973 年 24 巻 2 号 p. 96-102
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (2729K) -
牧島 博1973 年 24 巻 2 号 p. 102-110
発行日: 1973/02/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (1123K) -
1973 年 24 巻 2 号 p. 126
発行日: 1973年
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (98K)
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