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EFFECT OF DEPOSIT TEMPERATURE ON MICROSTRUCTURE AND CORROSION RESISTANCE OF TANTALUM COATING |
Lu Yanping Zhang Changxin(Beijing University of Iron and steel Technology) |
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Abstract The effect of different deposition temperature (1173-1333K) on thickness, hole ratio, phase componets, morphology of surface and corrosion resistance of deposited tantalum layer on low carbon steel was investigated by means of metallographical technique, microhardness testing, X-ray diffraction analysis, scanning electron microscope analysis and corrosion weight loss test. The experimental results showed that the tantalum coating of steel was composed of Ta and Fe_5Ta_3 phases, and with the increase of deposition temperature from 1173K to 1333K, the grain size as well as the thickness of coating layer increased notably. Under 1283-1333K, a denser, thicker tantalum coating could be obtained. The corrosion rate of Ta-coated steel in 37%HCl solution is 2-3 orders lower than that of uncoated steel.
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Received: 25 August 1987
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[1] 张长鑫,卢燕平等:稀有金属,7(3) ,26(1983) [2] 卢燕平,张长鑫:化工机械,11(3) ,53(1984) [3] 张长鑫:北京钢铁学院学报,4,106(1983) [4] Holman, W. R.; Huegel, E. J., J. Vac. Sci. Hechnol. 11 (4) , 701 (1974) . [5] 1, 131 (1964) [6] Uhlig, H. H., Corrcsion Handbook, John Wiloy and Sonc Inc., New Youk, 1969 |
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