| 稀土对一次性自粘结铁基复合粉末喷涂涂层结合力的影响 |
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| 引用本文： | 马臣,李慕勤,尹柯,邹人杰. 稀土对一次性自粘结铁基复合粉末喷涂涂层结合力的影响[J]. 中国稀土学报, 2003, 21(6): 733-735 |
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| 作者姓名： | 马臣 李慕勤 尹柯 邹人杰 |
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| 作者单位： | 1. 佳木斯大学生物医学材料重点实验室,黑龙江,佳木斯,154007
2. 佳木斯大学生物医学材料重点实验室,黑龙江,佳木斯,154007;哈尔滨工业大学现代焊接生产技术国家重点实验室,黑龙江,哈尔滨,150001 |
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| 基金项目： | 黑龙江省自然科学基金资助项目(E0232) |
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| 摘 要： | 采用亚音速氧-乙炔火焰喷涂技术，喷涂一次性自粘结粉末，经测定涂层的结合强度可达到打底层的界面结合强度。在一次自粘结粉末中加入0．9％(质量分数)稀土，涂层的结合强度最高。其原因是各种元素间产生自放热效应，导致微冶金结合，从而提高了涂层与基体的结合强度。适量稀土的加入净化了涂层界面，由链状向球状转变，改变了夹杂物的形貌特征，有利于提高涂层的结合强度。稀土与其它元素可形成稀土化合物，降低粉末的熔点，加大涂层的润湿铺展，利于涂层的致密化，提高涂层的耐磨性。
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| 关 键 词： | 无机非金属材料 自粘结 铁基复合粉末 耐磨性 稀土元素 涂层 结合强度 结合力 表面技术 |
| 文章编号： | 1000-4343(2003)06-0733-03 |
| 修稿时间： | 2002-10-30 |
Influence of RE on Cohesive Force of Spray Coating from One-shot Self-felt Iron-Based Composite Powder |
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| Ma Chen. Influence of RE on Cohesive Force of Spray Coating from One-shot Self-felt Iron-Based Composite Powder[J]. Journal of the Chinese Society of Rare Earths, 2003, 21(6): 733-735 |
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| Authors: | Ma Chen |
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| Abstract: | The strength of coating layer obtained by one-shot self-felt powder with subsonic oxygen-acetylene spraying technique was discussed. Due to self-heating effect among elements in powders and micro-alloying, the highest strength is gotten when RE contents in the one-shot self-felt powder are 0.9%. The experimental results show that coating layer could be purified by adding proper amounts of RE, which make the inclusion change from reticulate pattern to spherical. RE-compound could be formed when the RE acted with other elements, which make the melting point of powders fall down and the wetting ability could be increased, which should be beneficial to density coating layer and the wear-ability could be increased. |
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| Keywords: | inorganic materials self-felt composite powder wear-ability rare earths |
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