著者

阪本 英男 加藤 敏春 岸本 和一郎 多田 幸生 村上 明

出版者

一般社団法人情報処理学会

雑誌

情報処理学会論文誌 (ISSN:18827764)

巻号頁・発行日

vol.29, no.12, pp.1151-1157, 1988-12-15

被引用文献数

1

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靴はそのデザインに多様な形状が要求される.近年においては デザインに対する仕様の変化する期間が短くなっているため このような需要動向に即応できることが望まれる靴の製造工程においても靴CADシステムが導入されているが 三次元でのデザインを作成するための機能については不十分である.筆者らは 靴用CADシステムにおいて靴のデザイナによるデザインの作成作業を支援するための三次元カーソル機能の開発を行い 三次元のグラフィックディスプレイ上で実現した.本報告では 作業の対象であるラストの曲面形状をその三次元形状測定点から創成する過程 三次元カーソルの動きをモデリング曲面上のみに拘束するための処理手順 システムのハードウェア構成について述べるまた 実際に三次元カーソルを用いてデザイン曲線を作成した例を挙げる.

著者

柏原 太郎 加藤 敏春 有馬 純治 毛利 信幸

出版者

一般社団法人 表面技術協会

雑誌

金属表面技術 (ISSN:00260614)

巻号頁・発行日

vol.24, no.9, pp.500-505, 1973-09-01 (Released:2009-10-30)

参考文献数

7

被引用文献数

1 1

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The mechanism for formation of Cr6+ compounds which were produced by high temperature oxidation reaction of Cr-Ca and Cr(OH)3 systems was investigated. The following conclusions were drawn: (1) When Cr(OH)3-Ca(OH)2 system was burned, Cr6+ compounds were produced by two different mechanisms, which were distinguished by the boundary temperature of 300°C. At temperatures above 300°C, Cr6+ compounds were produced by the mechanism proposed by Nishino et al.; but at temperatures below 300°C, Cr6+ compounds were produced by the following reaction: 4Cr(OH)3+4Ca(OH)3+3O2→4CaCrO4+10H2O (2) CrO3 was prouced by burning of Cr(OH)3 including oxidable anions such as SO42+; and the amount of CrO3 compounds produced was maximum at 250°C. Therefore, it was impossible to prevent the production of Cr6+ compounds in the low temperature burning of real sludge. (3) When Cr-Ca system was burned, the amount of Cr6+ compounds produced became constant at a time at a temperature of 440-600°C; but, at temperatures above 700°C, the surface began to fuse and the reaction proceeded to the interior of particles so that the amount of Cr6+ compounds produced increased with the rise of temperature.

著者

土肥 信康 加藤 敏春 正木 征史

出版者

一般社団法人 表面技術協会

雑誌

金属表面技術 (ISSN:00260614)

巻号頁・発行日

vol.26, no.9, pp.411-415, 1975-09-01 (Released:2009-10-30)

参考文献数

10

被引用文献数

8 7

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The inhibition effects and mechanism of benzotriazole (B.T.A.) on tarnishing and corrosion of silver were studied by means of potentiostatic polarization curves, differential capacity-electrode potential curves, and accelerated testings in H2S and SO2 atmospheres. It was recognized that B.T.A. had little inhibition effects in acidic solutions (pH 2.5), but had great effects in almost neutral solutions; because, B.T.A.-Ag complex was formed on the surface in anodic potential region, and B.T.A. was adsorbed on the surface with lone electron-pairs of N-atoms in cathodic potential region. Silver treated with B.T.A. had an enhanced resistance to tarnishing in H2S atmosphere. It was considered that the prevention would be due to the formation of stable B.T.A.-Ag film on the surface. The galvanic corrosion of silver-plated panels occurred in SO2 atmosphere, leading to the copper base owing to the presence of pores, was much more markedly inhibited by electrolytic treatment than immersion treatment in B.T.A. solution. It was found that the change in the surface coverage (θ) of B.T.A. treated copper conformed to Langmuir's adsorption formula expressed as follows: θ=Km/(1+Km), where K: adsorption constant and m: concentration of B.T.A. Then, the changes of K by immersion treatment and by electrolytic treatment were measured. As the results, a larger value of K was obtained by electrolytic treatment. Therefore, it was considered that the adsorption of B.T.A. on copper through pores became easier by electrolytic treatment.