| Effect of Yttrium on Microstructure and Hot Corrosion Preformance of Laser Clad Co-Based Alloy |
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| 作者姓名： | 张松 王茂才 颜永根 吴维 |
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| 作者单位： | Shenyang Polytechnic University Shenyang 110021，China，Institute of Corrosion and Protection of Metals，Academia Sinica，Shenyang Polytechnic University，Shenyang 110021，China，Institute of Corrosion and Protection of Metals，Academia Sinica，Shenyang Polytechnic University，Shenyang 110021，China |
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| 基金项目： | Research Project supported by the Corrosion Science Laboratory,Academia Sinica |
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| 摘 要： | The structure of the yttrium modified Co-base alloy layers formed by laser cladding on 2Cr13 and1Cr18Ni9Ti steel surfaces and its hot corrosion performance have been investigated systematically.The re-sults show that the Y-containing cobalt base clad alloy has a finer microstructure and higher corrosion re-sistance to the salt mixture of 75% Na_2SO_4+25%NaCl at high temperature.The unique properties are ob-tained with addition of 0.875% Y for the formation of a continuous and compact oxide scale.The compactscale may act as a barrier for the inward diffusion of oxygen and sulphur and also for the outward diffusionof alloying elements.
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Effect of Yttrium on Microstructure and Hot Corrosion Preformance of Laser Clad Co-Based Alloy |
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| Zhang Song Wang Mao-Cai Yan Yong-Gen Wu Wei-Tao Zhu Jing-Pu.Effect of Yttrium on Microstructure and Hot Corrosion Preformance of Laser Clad Co-Based Alloy[J].Journal of Rare Earths,1993(4). |
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| Authors: | Zhang Song Wang Mao-Cai Yan Yong-Gen Wu Wei-Tao Zhu Jing-Pu |
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| Abstract: | The structure of the yttrium modified Co-base alloy layers formed by laser cladding on 2Cr13 and 1Cr18Ni9Ti steel surfaces and its hot corrosion performance have been investigated systematically.The re- sults show that the Y-containing cobalt base clad alloy has a finer microstructure and higher corrosion re- sistance to the salt mixture of 75% Na_2SO_4+25%NaCl at high temperature.The unique properties are ob- tained with addition of 0.875% Y for the formation of a continuous and compact oxide scale.The compact scale may act as a barrier for the inward diffusion of oxygen and sulphur and also for the outward diffusion of alloying elements. |
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| Keywords: | Rare earth Laser cladding Co-based alloy Hot corrosion |
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