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1CATHODIC PROCESS AND WEAR RESISTANCE OF ELECTRO-DEPOSITED RE-Ni-W-P-SiC COMPOSITE COATING显示文摘Cathodic deposition current density of the composite coatings increases when SiC par-ticles and rare earth (RE) were added in the bath, which is profitable for Ni- W-P alloyto deposit in the cathod, forming Ni-W-P-SiC and RE-Ni-W-P-SiC composite coat-ings. On the contrary, the addition of PTFE in the bath decreases cathodic depositioncurrent density of the coatings. The current density increases a little when the amountof RE is 7-9g/l; however, the current density increases greatly when the amount ofRE is increased to 11-13g/l. But if the amount of RE is raised further, the currentdensity decreases. Hardness and wear resistance of RE-Ni-W-P-SiC composite coat-ing have been studied, and the results show that the hardness and wear resistance ofRE-Ni-W-P-SiC composite coating increase with increasing heat treatment tempera-ture, which reach peak values at 400℃; while the hardness and wear resistance of thecoating decrease with the rise of heat treated temperature continuously.Z.C.Guo,X.Y.Zhu,R.D.Xu and X.W.YangFaculty of Material and Metallurgy Engineering, Kunming University of Science and Technology, Kunming650093, ChinaManuscript received 26 December 2001 in revised form 23 April 2002 2002Acta Metallurgica Sinica(English Letters)2002,15,4:16
2酶联免疫分析法研究进展显示文摘酶联免疫分析法广泛应用于临床检测、生化分析等领域。本文以各种标记酶为线索 ,综述了近年来酶联免疫分析法的研究进展,包括辣根过氧化物酶,碱性磷酸酯酶,青霉素 酶等标记酶和各种测定方法如荧光法、发光法、电化学分析法等,及其在分析测试中的应用 。引用参考文献54篇。孙伟 焦奎 张书圣 2001青岛科技大学学报(自然科学版)2001,23,3:9
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