| HK40钢的渗铝新工艺及抗碳化腐蚀性能研究 |
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| 引用本文： | 黄志荣,马刘宝,李培宁. HK40钢的渗铝新工艺及抗碳化腐蚀性能研究[J]. 材料工程, 2005, 0(1): 25-28 |
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| 作者姓名： | 黄志荣 马刘宝 李培宁 |
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| 作者单位： | 华东理工大学机械工程学院,上海,200237 |
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| 基金项目： | 上海市教委"曙光计划" |
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| 摘 要： | 采用金相显微镜(OM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)、X射线能谱分析仪(EDAX)等仪器设备研究了HK40钢的渗铝及其抗碳化腐蚀能力.试验结果表明,通过调整渗剂中特种添加剂与铝粉的比例和渗铝温度等工艺参数,可达到控制渗铝层相组成的目的.与传统一段法固体粉末渗铝工艺相比,两段法固体粉末渗铝工艺可提高渗速约60%.HK40钢的渗铝层由NiAl相和Ni3Al相组成时,其抗碳化腐蚀能力得到明显提高.
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| 关 键 词： | 固体粉未渗铝 抗渗碳 铝化物涂层 HK40钢 |
| 文章编号： | 1001-4381(2005)01-0025-04 |
| 修稿时间： | 2004-08-31 |
Pack Aluminization of HK40 Steel and Evaluation of Carburization Resistance |
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| HUANG Zhi-rong,MA Liu-bao,LI Pei-ning. Pack Aluminization of HK40 Steel and Evaluation of Carburization Resistance[J]. Journal of Materials Engineering, 2005, 0(1): 25-28 |
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| Authors: | HUANG Zhi-rong MA Liu-bao LI Pei-ning |
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| Abstract: | The pack aluminization of HK40 alloy and its carburization behavior were investigated using optical microscopy (OM) , scanning electron microscopy (SEM) , X-ray diffraction (XRD) and energy dispersion analysis of X-ray(EDAX). The experimental results showed that the desired surface composition of aluminized layer can be obtained by adjusting the proportion of Al to special additive powder in the pack and process parameters such as treatment temperature, and that the deposition rate was increased by about 60% compared with the classical methods. The carburization resistance of aluminized layer of NiAl and Ni3Al obtained by the two-step process is apparently superior to that of the Ni2 A15 phase which is obtained by traditional process. |
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| Keywords: | pack aluminization carburization resistance aluminide coating HK40 steel |
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