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材料热处理学报 2004年第5B期25卷 1119-1121页

作者： Makoto Imamura Jun Okada kazuya satoh Okuno Chemical Industries Co. Ltd JapanOkuno Chemical Industries Co. Ltd JapanOkuno Chemical Industries Co. Ltd Japan

This process does not use general electroless plating solution containing formaldehyde(carcinogen) and phosphate(the object of waste water regulation). Furthermore, we succeeded in developing a new electroless copper plating solution which is usable semi-permanently by using the special reducing agent. The electroless deposition forms a very thin conductive film on substrate. Therefore, it can prevent some appearance defects (e.g. pits, pin-holes, laminations and inclusions) that occur in the conventional ones. In addition, it is possible to eliminate electroplating of copper from the process by applying the exclusive nickel solution in electroplating. Therefore, the obtained metal parts can be recycled as high quality stainless steel. Given this copper electroplating-free process, 25 u m-thick nickel deposition at the stage of electroplating, at least, enables the metal layers to show properties as versatile as those of the conventional(its total thickness is 25 n m in the comparative conventional process).

关键词：电镀再循环调磷调氮合成树脂

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Lifecycle Evaluation of Base-Isolated Rubber Bearings Considering Environmental Deterioration

Lifecycle Evaluation of Base-Isolated Rubber Bearings Consid...

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国际桥梁2004年大会

作者： kazuya satoh Yoshito ITOH Akio YAZAWA Yoshihisa YAMAMOTO Student of Civil Engineer Nagoya University Aichi Japan Professor Nagoya University Aichi Japan Student of Civil Engineer Nagoya University Aichi Japan Section Chief Tokai Rubber Industry Aichi Japan

＜正＞ 1. IntroductionIn Japan, the base-isolated seismic design has been adopted widely after Hyogoken-Nanbu Earthquake in 1995. Specifically, the base-isolated rubber bearings are widely used, and further demand is expected in the atomic power plants, buildings, and civil structures. However, long-term deterioration characteristics of base-isolated rubber bearings have not yet been known. The reason for this is that there are little basic data of deterioration characteristics of them. So, it is unknown that mechanical performances of the deteriorated base-isolated rubber bearings. This problem should be solved because long-life structures are required.

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