著者
石見 清隆 井田 義明 津高 文幸 杉本 克久
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.67, no.3, pp.150-158, 2016-03-01 (Released:2017-03-01)
参考文献数
12
被引用文献数
1 2

Anodic polarization curves of electro-polished Type 304 stainless steel were measured in organic acid solutions of eight types to develop a safe and environmentally friendly passivation treatment. The pitting potentials of the steel passivated in the solutions were examined in a deaerated 3.5%NaCl solution. Among the organic acid solutions, 8%DL-malic acid, 8%citric acid, 8%L-tartaric acid and 8%glucono-δ-lactone were found to be suitable as treatment solutions because of the low current densities(<0.02 A・m-2)of the passive state and high pitting potentials(>700 mV vs. Ag/AgCl(sat. KCl))of the passive films. Passive films formed on Type 304 stainless steel by natural immersion into 8%DL-malic acid+0.98%H2O2, 8%citric acid+0.98%H2O2, 8%L-tartaric acid+0.98%H2O2 and 8%glucono-δ-lactone+0.98%H2O2 showed high pitting potentials(>1000 mV)in NaCl solutions of 3.5% - saturation concentration. For solutions containing H2O2, the pitting-potentialraising effects were greater on an electro-polished surface than on a buffer(#400)-polished surface.
著者
服部 毅
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.59, no.8, pp.526, 2008 (Released:2009-03-25)
参考文献数
16
被引用文献数
5 4
著者
谷本 省三
出版者
一般社団法人 表面技術協会
雑誌
実務表面技術 (ISSN:03682358)
巻号頁・発行日
vol.22, no.2, pp.60-66, 1975-02-01 (Released:2009-10-30)
参考文献数
7
著者
宮重 昂 多和 田敦 鈴木 良一
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.20, no.12, pp.602-608, 1969-12-20 (Released:2009-10-30)
参考文献数
9

Surface treatment was conducted on aluminum alloy, ADC 12, by chemical tin plating, electroless nickel plating, electroless nickel plating (hardening), molybdenum disulfide coating on zinc phosphating, and hard anodizing; and on aluminum alloy, ADC 7, by hard anodizing. Then, the surfaces of above treated alloys were combined with steels, FC 15, S 15C, and S 15C (hardening), and subjected to wear tests to study the effects of surface treatment.The results obtained were summarized as follows:(1) Hard anodizing showed the most remarkable effect and electroless nickel plating (hardening) showed the second.(2) The treatment by hard anodizing was easier to conduct on ADC 7 than on ADC 12, and the wear resistance after treatment was higher in the former than in the latter. It was found that the hardness of the surface treated by electroless nickel plating was increased by heat treatment and its wear resistance was also improved. However, little effects were shown by soft and thin films such as treated by molybdenum disulfide coating and chemical tin plating.(3) When 3 kinds of steel materials, FC 15, S 15C, and S 15C (hardening), were combined with surface treated aluminum alloys, the tendency to toward wear resistance was nearly the same.

1 0 0 0 OA PVDの最新動向

著者
小島 啓安
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.68, no.12, pp.654-661, 2017-12-01 (Released:2018-10-01)
参考文献数
26
被引用文献数
1 1
著者
尾形 幹夫
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.69, no.4, pp.163-165, 2018-04-01 (Released:2018-12-01)
参考文献数
15

Hydrogen・oxygen nanobubbles were generated in 0.1-1.0 m mol/L Na2SO4 solutions using anomalous high-frequency AC electrolysis (-pole and ±poles, 30 kHz). The bubble size distribution was 20-600 nm. The maximum bubble number density was about 4 million per milliliter at the size distribution position of 100 nm. The bubble number density of the solution boiled for 2 min did not decrease, but instead increased slightly. After 26 days, the nanobubbles were found to exist almost stably.
著者
佐伯 功 木村 豪志 春木 佳奈 佐藤 忠夫
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.62, no.12, pp.717, 2011 (Released:2012-09-22)
参考文献数
13

This study examined Ni-P electroplating with saccharin sodium salt. Hardness of the deposited films increased concomitantly with increasing concentration of the saccharin sodium salt in the plating bath. It reached Hvm = 822 at the concentration of 8.3 mol m−3. Crystallites in the films were too small to account for film hardening by the Hall-Petch mechanism.
著者
加藤 貴行 阿部 信行
出版者
一般社団法人 表面技術協会
雑誌
表面技術 (ISSN:09151869)
巻号頁・発行日
vol.60, no.11, pp.716, 2009-11-01 (Released:2010-05-28)
参考文献数
12
被引用文献数
1 1
著者
青山 豊
出版者
一般社団法人 表面技術協会
雑誌
実務表面技術 (ISSN:03682358)
巻号頁・発行日
vol.20, no.5, pp.251-255, 1973-05-01 (Released:2009-10-30)
被引用文献数
1