巻号一覧
28 巻, 4 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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岸 直行1977 年 28 巻 4 号 p. 196-201
発行日: 1977/04/01
公開日: 2009/10/30
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佐藤 正壽, 小坂 泰介, 佐藤 栄一1977 年 28 巻 4 号 p. 202-207
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーDistribution of P ions in the tantalum films anodized in phosphoric acid solutions was determined by using AES and IRRS. The film thickness increased with increasing solution temperature, but the amount of P ions doped was almost independent of the temperature. Both the concentration and the penetration depth of the P ions increased with increasing molarity of phosphoric acid solutions, and they were 0.485+0.156 logM and 0.595+0.07logM, respectively. The linear relationship between the decrease in film thickness and that in reflectance can be interpreted in terms of the steady state of P ion concentration in the film. A discrepancy in the results of IMA and AES measurements was also discussed.抄録全体を表示PDF形式でダウンロード (799K) -
久保 光康, 出口 和夫, 村上 透1977 年 28 巻 4 号 p. 208-211
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーThe limiting current densities (ilim) were measured for diluted solutions of CuSO4, ZnCl2, NiSO4, Na2SO4, NH4Cl, and NaCl in ion-exchange membrane electrodialysis cells. They were propotional to the electrolyte concentration. Particularly, with the cation exchange membrane in the mixed solution of NH4Cl and ZnCl2 ilim showed a linear relationship with [NH4+]/[Zn2+] ratio. From the relationship between ilim and the diffusion co-efficient of ions, it was found that the thickness of diffusion layer on the membranes was almost independent of the kinds of the electrolytes. The thickness of diffusion layer on the cation exchange membrane was thinner than that on the anion exchange membrane. Limiting current densities obtained experimentally agreed well with the values estimated by using Nernst-Planck's equation.抄録全体を表示PDF形式でダウンロード (443K) -
大久保 敬吾1977 年 28 巻 4 号 p. 212-216
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーThe cause for hardening of anodized coatings by chemical and heat treatments has been investigated, with respect to the structure changes in oxide, by using X-ray diffraction and differential thermal analysis. The amorphous anodic oxide, as revealed by X-ray diffraction, changes to γ-Al2O3 at 800°C and to α-Al2O3 at 1200°C. Treating the film with sodium silicate after anodizing resulted in a low temperature (400°C) transition from amorphous to γ-Al2O3 and an acceleratation of crystallization. Ferrous sulfate treatment also caused a lowering of the γ-Al2O3 to α-Al2O3 transition temperature. Most of the water in the coatings desorbed below 400°C as the heating temperature rose; decomposition of sulfate accompanied by the γ-Al2O3 transition proceeded until α-Al2O3 transition took place.抄録全体を表示PDF形式でダウンロード (1199K) -
清水 輝夫1977 年 28 巻 4 号 p. 217-222
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーElectrolytic conditions and bath composition have been investigated for obtaining Ni-Ti from the bath containing nickel chloride, titanium sulfate, boric acid, sodium glycolate, and glycin. Sodium glycolate prevented the precipitation of Ti ions, while a 1:2 complex of Ni and glycolate was formed. With increasing concentration of glycolate the cathode current efficiency of Ni decreased; the current efficiency of Ti increased in the high current density range. Addition of glycine caused an increase in the current efficiency of Ti with a maximum efficiency at a concentration of 0.2mol/l of the additive. In the deposition, increasing either Ti or Ni ions in the bath resulted in an increase in current efficiency for both Ti and Ni. The electrodeposits obtained from the bath at low temperatures and high current densities are fine-grained and lustered, but cracks due to the stress were observed.抄録全体を表示PDF形式でダウンロード (1316K) -
近藤 嘉一, 松林 宏1977 年 28 巻 4 号 p. 223-227
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーStructure of hydrated chromium oxide film formed by electrolytic reduction in a solution of CrO3 55g/l containing 0.4g/l of H2SO4 as an addition was studied by using infra-red spectra, thermal analysis, fluorescent X-ray analysis etc. Hydrated chromium oxide released approximately 2 moles of H2O by heating it up to 360°C and about 1mol of H2O during heating it at a temperature from 550 to 620°C and changed to Cr2O3 crystal. Sulfate radical was bound in the chemical structure and its initial amount was estimated to be in a range of 0.11 to 0.14 as SO42-/Cr molar ratio in the hydrated chromium oxide film. Sulfate radical in the hydrated chromium oxide film was substituted by OH- and dissolved into hot water. The dissolving reaction seemed to proceed apparently with a form of firstorder reaction. It was concluded that the rational formula of the hydrated chromium oxide film should be CrO(OH)H2O.抄録全体を表示PDF形式でダウンロード (665K) -
縄舟 秀美, 水本 省三, 川崎 元雄1977 年 28 巻 4 号 p. 228-231
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーA new method of electrolytic recovery of metals, such as nickel, copper and zinc was studied, using a cell having two compartments separated by an adequate filter media. Heavy metal sludges obtained from neutralization process of metal finishing wastes were fed to the anode compartment and dissolved by acid liberated on the insoluble anode. Metal ion concentration as well as the pH of the electrolyte could be kept at stationary values during electrolysis, and the metals were deposited with high efficiency at moderate current densities. The metals recovered were reusable as anodes for electroplating.抄録全体を表示PDF形式でダウンロード (510K) -
沖 慶雄, 森 文雄, 小山 正泰1977 年 28 巻 4 号 p. 232-235
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーSynergistic effect of dibasic lead phosphite and phthalocyanine blue was studied on the photooxidized degradation of PVC. PVC stabilized by dibasic lead phosphite showed a good weather-ability for outdoor exposure. Used with phthalocyanine blue, dibasic lead phosphite was remarkably diffused and solubilized in PVC within three months; neverthless weatherability was rather improved. From the results of GPC analysis, after outdoor exposure, it was found that average molecular weight slightly decreased. But irregularity of GPC patterns by crosslinkage and main chain scission was not observed. According to ESCA analysis, it was found that carbonyl group existed only in the surface layer and disappeared by ion etching.抄録全体を表示PDF形式でダウンロード (1169K) -
佐藤 敏彦, 針塚 聰一1977 年 28 巻 4 号 p. 236-237
発行日: 1977/04/01
公開日: 2009/10/30
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仏性 尚道, 須賀 蓊1977 年 28 巻 4 号 p. 238-240
発行日: 1977/04/01
公開日: 2009/10/30
ジャーナル フリーPDF形式でダウンロード (312K)
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