巻号一覧
11 巻, 11 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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岡田 秀彌, 石田 武男1960 年 11 巻 11 号 p. 623-628
発行日: 1960/11/20
公開日: 2009/10/30
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多賀谷 正義, 田村 今男, 田中 貢1960 年 11 巻 11 号 p. 629-632
発行日: 1960/11/20
公開日: 2009/10/30
ジャーナル フリーQuenching oil gradually deteriorates in its cooling ability and in its ability of providing brightness of steel parts for bright quenching by oxidation and thermal decomposition of oil. The role of oxidation on the deterioration of oil for bright quenching was already reported. This time, the changing of brightness by thermal decomposition of bright quenching oil was examined. A nichrome wire heated at 900°C was quenched repeatedly once a minute, into oil of 2 liters circulated and held at a constant temperature of 30°C in nitrogen atmosphere. The brightness of steel parts quenched into mineral oil changed with the process of oxidation which slightly progressed even in such an atmosphere, till thermal polymerized products were produced markedly. Fatty oil decomposed markedly in such a condition and the steel parts reacted with its decomposed products and hence their brightness decreased rapidly with thermal decomposition. It is noted that the flash point of oil is decreased by thermal decomposition in bright quenching condition.抄録全体を表示PDF形式でダウンロード (2351K) -
「有機金属錯塩浴よりの電着」(第4報)中川 融1960 年 11 巻 11 号 p. 632-637
発行日: 1960/11/20
公開日: 2009/10/30
ジャーナル フリーThe crystal structure of various deposits were analysed by the X-ray diffraction method, and the surface was examined electromicroscopically. The cross-section structure was also investigated.
Baths used for the preparation of the deposits are as follows: Ni: Ni-TEA bath, Watts type bath, bright Ni plating bath, leveling and bright Ni plating bath; Cu: Cu-MEA bath, Cu cyanide bath, bright Cu cyanide bath, leveling and bright Cu cyanide bath; Fe: Fe-TEA bath, acid Fe plating bath.
Of the various deposits above mentioned, the bright deposit from Ni-TEA bath possessed a band structure, while the bright deposit from Cu-MEA bath showed a fine grain structure both having no preferred orientation of crystals. And the bright deposit from Fe-TEA bath exhibited a preferred orientation structure with finer grain than that from an acid bath.
However, so far as the present experiments are concerned, there seemed no general relationship or rule between the preferred orientation (or the cross-section structure) and the surface brightness of the deposits.抄録全体を表示PDF形式でダウンロード (3672K) -
「金属電着における添加剤の作用」(第2報)林 忠夫, 石田 武男1960 年 11 巻 11 号 p. 638-643
発行日: 1960/11/20
公開日: 2009/10/30
ジャーナル フリーChanges in cathode polarization, produced by the addition of organic and inorganic substances to the cyanide zinc bath have been investigated.
The addition agents studied fall into four classes according to the effect they produce:
i) Compounds which have no apparent effect on the cathode polarization. Inorganic salts of Se, Ag, Hg and Cd. Organic compounds, such as butyne diol (1, 4), propargyl alcohol, saccahrin and anthranillic acid.
ii) Those which increased the hydrogen overvoltage as well as the cathode polarization of zinc. Benzaldehyde, vanillin, heliotropine, coumarine, methylvinyl ketone, gelatin, peptone, polyvinyl alcohol and turkey-red oil.
iii) Inorganic sulfur compounds, such as Na2S and Na2S2O3 produced the bright deposits even though they had no remarkable effect on the cathode polarization.
iv) The use of organic compounds, such as vanillin, heliotropine, or polyvinyl alcohol in conjunction with the metallic salt of Ni, Co, Mo or W had the pronounced effect on the cathode polarization accompanied by the bright deposits.抄録全体を表示PDF形式でダウンロード (806K) -
「金属電着における添加剤の作用」(第3報)林 忠夫, 石田 武男1960 年 11 巻 11 号 p. 644-650
発行日: 1960/11/20
公開日: 2009/10/30
ジャーナル フリーThe zinc deposits obtained from the cyanide bath in the presence of various addition agents have been investigated by an electron diffraction method and also by photomicroscophy in order to elucidate the characteristics of the crystal structure with respect to the formation of bright deposits.
Although the inorganic salts of Se, V, Ag, Hg and Cd had no favorable effect on the formation of the bright deposits, metallic salts of Ni, Co, Fe, Cu, Mo and W, and also inorganic sulfur compounds, such as Na2S and Na2S2O3 have been found to be effective in promoting brighter deposits.
Most organic addition agents, such as used for promoting brighter zinc deposits have always the same effect on the crystal habit, leading to the smooth surface which have the preferred orientation of the crystal.
The fine laminar structure was observed in the bright deposits obtained from the bath with Na2S+Ni salt.
It is concluded that the addition agents appear to cause brightening mainly when they result in the formation of the smooth surface which have both the fine grains and the preferred orientation of the crystals in the deposit.抄録全体を表示PDF形式でダウンロード (2025K) -
萩原 信夫1960 年 11 巻 11 号 p. 651-653
発行日: 1960/11/20
公開日: 2009/10/30
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ブラウント氏記念講演会講演要旨1960 年 11 巻 11 号 p. 654-656
発行日: 1960/11/20
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (434K)
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