巻号一覧
34 巻, 7 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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會川 義寛, 下田 陽久, 鋤柄 光則1983 年 34 巻 7 号 p. 344-353
発行日: 1983/07/01
公開日: 2009/10/30
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久松 敬弘1983 年 34 巻 7 号 p. 354-360
発行日: 1983/07/01
公開日: 2009/10/30
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石田 次雄, 高藤 英生1983 年 34 巻 7 号 p. 361-370
発行日: 1983/07/01
公開日: 2009/10/30
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千葉 淳, 竹本 博好, 小川 忠彦1983 年 34 巻 7 号 p. 371-375
発行日: 1983/07/01
公開日: 2009/10/30
ジャーナル フリーA chelating resin to analyze chromate ions was prepared by mixing 0.02% diphenylcarbazide solution (100cm3) and 1gr of 50-100mesh Dowex 2×8 anion exchange resin. After stirring for 25min by magnetic stirrer the resin was filtered off from the solution and dried at 50°C in air to sustain about 25% of the original water content. The chelating resin thus prepared was stored in nitrogen atmosphere in the dark, it was stable for 6 months. A 200mg portion of the resin was put in a glass tube of 2.55mm∅×70mm, both ends of which were plugged with cotton wool. For determination, 2cm3 of sample solution was sucked into the column in 4min and the length of red-violet colored layer appearing in the column was measured. For producing the color, it was neccessary to add H2SO4 at concentrations 0.1-0.25mol dm-3. Addition of H2SO4 was done by passing the sample solution to a column of silica gel (50-80mesh, 100mg) containing 0.13mol H2SO4/dm3 prior to the determination. Diverse cations were preliminarily removed by cation exchange, a column containing Dowex 50W×2 (100-200mesh, 100mg) was placed before the silica gel column. Temperature of the sample solution was kept at 10-25°C. Determination of chromate ion was possiblefor concentrations 0.1-500ppm in about 6min within an error of±10%.抄録全体を表示PDF形式でダウンロード (586K) -
津留 豊, 中川 善隆, 松永 守央, 細川 邦典1983 年 34 巻 7 号 p. 376-383
発行日: 1983/07/01
公開日: 2009/10/30
ジャーナル フリーReaction products of several types of amines with epichlorohydrin were used as a brightener. Effects of the brightener on the electrocrystallization of zinc from alkaline zincate bath have been studied by electrochemical methods, microscopic observation and x-ray diffraction. The zinc deposit obtained from the bath containing the brightener exhibited a {1120} preferred orientation. The brightener adsorbed at the electrode surface increased the overvoltage of zinc deposition, which resulted in the codeposition of hydrogen. The ratio (iH2/iZn) of partial current densities was found to make the brightener classify into three groups. Also such classification was supported from the relationship between iH2/iZn and microscopic observation of zinc deposits. The average granular size of deposits decreased with an increased iH2/IZn and reached to the value of about 0.2μm.抄録全体を表示PDF形式でダウンロード (1680K) -
加藤 正義, 福島 信人, 横井 清弘, 工藤 忠人1983 年 34 巻 7 号 p. 384-390
発行日: 1983/07/01
公開日: 2009/10/30
ジャーナル フリーIn order to examine the effect written in the title, four kinds of electrolytes, ammonium adipate (Ad), ammonium borate (B), ammonium dihydrogen phosphate (P) and pottasium hydrogen phthalate (Ph) were investigated. The nature of the film was summarized as follows. 1) Capacitance and tanδ; B≅P≅Ph≅Ad, 2) Break down voltage; lowest P<Ph<Ad<<B highest, 3) Leakage current; highestB>>Ph>P>Ad lowest, 4) Antihydration property; worst Ad<≅B<Ph<<P best, 5) Anti- acid property; worst P<≅B<<Ph≅Ad best. 6) Transient behavior; worst (shortest) B<Ph<P<Ad best (longest). In any electrolyte, the leakage current in the reanodization after heating was considerably decreased (nearly two order) owing to decrease in the interstitial ions. In the prolonged anodization, however, the current again gradually increased to reach a steady state one. This time to reach the steady state current was discussed in connection with the capacitor performance, resulting in that the film taken the longer time was found to be the better performance.抄録全体を表示PDF形式でダウンロード (929K) -
吉村 俊一, 堀越 徹, 久保田 昇, 佐藤 栄一1983 年 34 巻 7 号 p. 391-396
発行日: 1983/07/01
公開日: 2009/10/30
ジャーナル フリーGold-palladium-copper alloy plating from neutral EDTA solution was investigated. The plating bath consisted of 0.211M EDTA-2Na, 0.198M Na2SO3, 0.012M NaAsO2i 0.021M Au(SO3)23-, 0.024M Pd (en)22+ and 0-0.021M CuSO4. The plating was carried out at temperature: 25°C, 50°C, pH: 7-10, current density: D.C. 0.1-3.0A·dm-2 and agitation: 0-2000rpm. The content of gold in alloy deposits decreased and palladium, copper contents increased with increasing the current density. As the temperature of solution rised, gold content increased and palladium, copper contents decreased. Further, at lower pH than 8, the variation of the alloy deposit composition was small though gold content increased under strong stirring. Bright gold-palladium-copper alloy deposits were obtained under the extensive electrolytic condition. In the solution containing 0.021M Au(SO3)23-, 0.024M Pd (en)22+ and 0.0084M CuSO4, the alloy deposits of 72.4 Au, 12.8 Pd, 14.8 Cu Wt% was obtained under condition of pH 8, 50°C and D.C. 1.0A·dm-2 and the current efficiency was 76.6% and the electrodeposit crystal size was about 212Å long. The hardness of the gold-palladium-copper alloy deposits was about 400VHN and wear resistance was greater than that of a 22K (carats) gold-nickel alloy deposits.抄録全体を表示PDF形式でダウンロード (1207K)
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