巻号一覧
37 巻, 4 号
選択された号の論文の8件中1～8を表示しています
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電気化学的生成と応用前田 康久1986 年 37 巻 4 号 p. 152-158
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (908K) -
永井 基晴1986 年 37 巻 4 号 p. 166-172
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (1296K) -
高谷 松文, 松永 正久1986 年 37 巻 4 号 p. 173-177
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーMulticomponent films of TiC and Fe with various composition ratios (TiC/Fe=x/y(Vol%)) were deposited on steel substrate by RF sputtering using a single generator, the power from which was split by variable coupling capacitor and applided to TiC and Fe targets. The insertion of hard multicomponent films of TiC and Fe resulted in improved adhesion to the steel substrate. Adhesion of films on steel substrate was measured by a scratch tester.
Specimens with a series of TiC/Fe (0/10, 2/8, 4/6, 6/4, 8/2, 10/0) were obtained by changing voltage under a constant argon pressure of 1.6Pa. Film composition was measured by x-ray diffraction and EPMA.
The results show that the multicomponent TiC/Fe films were homogeneous, and adhesion to the steel substrate was better than for single-component TiC film.抄録全体を表示PDF形式でダウンロード (2261K) -
内山 利光, 長谷川 実, 松本 裕志1986 年 37 巻 4 号 p. 178-183
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーDuring corrosion tests on aluminum specimens in natural or synthetic sea-water, pitting corrosion of the surfaces occurs. Except for the local sites of pitting, however, the formation of a milk white film is generally observed. In regions covered with this film, pitting corrosion hardly occurs even if the corrosion test is continued for a prolonged period. Based on this observation, it was attempted to obtain corrosion-resistant conversion coatings by utilizing sea-water or solutions containing selected compounds of sea-water.
The following results were obtaind.
(1) When aluminum specimens were dipped in boiling ASTM sea-water, a uniform conversion coating was formed on their surfaces. The coating was found to consist of two distinct layers: an outer layer containing magnesium and aluminum, and an inner dense layer containing only aluminum.
(2) Magnesium chloride, sodium hydrogen carbonate and sodium sulfate were found to be essential in obtaining uniform, corrosion resistant conversion coatings.
(3) The corrosion resistance of the conversion coatings formed in ASTM synthetic sea-water was found to be better than that of boehmite films commonly used for the corrosion-protection in aluminum heat exchangers.抄録全体を表示PDF形式でダウンロード (2836K) -
吉村 長蔵, 野口 駿雄, 土井 道雄1986 年 37 巻 4 号 p. 184-188
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーIt has been previously reported that aluminum anodic coatings were changed to boehmite and a composite oxide by hydrothermal treatment in cobalt oxide dispersed water. In this study, the products formed by hydrothermal treatment at high pressure and temperature were investigated by thermal gravimetry, IR-spectro-photometry and X-ray diffraction. It was found that boehmite was produced with steam treatment at pressures above 30kg/cm2 and temperatures above 200°C, but not by the ordinary sealing method using boiling water or steam at about 4kg/cm2. Hydrothermal treatment in phosphate solution resulted in a white enamel-like coating was obtained. This coating was assumed to be due to the formation of aluminum phosphate.抄録全体を表示PDF形式でダウンロード (1175K) -
千田 伸, 久保田 昇, 佐藤 栄一1986 年 37 巻 4 号 p. 189-194
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーThe electrochemical and morphological effects of minute amount of lead, thallium, arsenic, cobalt, indium or nickel ions on the electrodeposition of gold from acidic gold plating baths have been systematically investigated. Heavy metal ions, Pb2+ or Tl+, increased the current efficiency of gold electrodeposition, especially at low current density, and changed the morphology of the electrodeposit. On the other hand, Co2+, In3+ and Ni2+, which easily form alloys with gold in electrodeposition, decreased current efficiency and reduced grain size, so that a bright, smooth deposit was obtained. However, AsO2- ion, which acts as a brightener in gold sulphite plating baths, had unsatisfactory brightening effect in acidic gold plating baths.抄録全体を表示PDF形式でダウンロード (1415K) -
児嶋 佳世子, 八木 孝夫, 篠原 長政1986 年 37 巻 4 号 p. 195-199
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーSimultaneous analysis of EDTA (complexing agent), Cu-EDTA (copper complex of EDTA) and formate (oxidation product of formaldehyde) contained in copper plating baths used in the full-additive process was carried out within 20 minutes, by isotachophoresis using hydrochloric acid and histidine (pH 6.0) as the leading electrolyte and sodium caproate as the terminal electrolyte.
Free copper ions were not detected.
Gas chromatography showed that the formaldehyde decreased in proportion to the increase of formate. This shows that isotachophoresis can be used to monitor the concentration of the reducing agent (formaldehyde) in a copper plating bath.
Several amines and amino acids added to the copper plating bath were also determined.抄録全体を表示PDF形式でダウンロード (605K) -
福田 豊, 福島 敏郎1986 年 37 巻 4 号 p. 200-201
発行日: 1986/04/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (251K)
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