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| 摘要: |
| 选用强碳化物形成元素钽作为金属蒸汽真空弧离子源(metal vapor vacuum arc，简称MEWA)的阴极，对H13钢进行了钽离子注入表面改性研究。对比了Ta、C离子单注入和Ta、C离子双注入的效果，测量了离子注入表面的成分，考察了注入表面的相结构。在相同的摩擦磨损试验条件下，测量了摩擦因数和磨损量，研究表明，和未注入Ta、C单离子注入相比，Ta、C离子双注入提高了H13钢的耐磨性并大幅度降低了其表面的摩擦因数。双注入区出现的弥散TaC相是耐磨性提高、摩擦因数降低的主要原因。在试验条件下，对H13钢单注入Ta时未发现TaC的形成。 |
| 关键词: 钽 双注入 金属蒸汽真空弧离子源 |
| DOI： |
| 分类号:TG174.444 |
| 基金项目:国家自然科学基金(59671051)和南通工学院自然科学基金(200347)资助项目 |
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| Wear Resistance of C-and Ta-implanted H13 Steel |
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YANG Jian-hua1 ZHANG Tong-he2
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| Abstract: |
| Ta ions extracted from a metal vapor vacuum arc(MEVVA) ion source were implanted into H13 steel. The single ion implantation of tantalum and carbon were compared with that of Ta+C dual ion implantation. Rutherford backscattering spectrum was used to measure the surface composition of H13 steel after ion implantation. Surface phase analysis of implanted H13 steel was carried out by glancing x-ray diffraction. Wear experimental results showed that the wear rate of Ta+C-implanted steelwas increased and the friction coefficient dropped significantly compared with that of unimplanted H13 steel. The present of dispersed TaC phase was the main reason of improvement of tribological behavior. The TaC phase did not appear in Ta-implanted H13 steel. |
| Key words: tantalum,dual ion implantation,metal vapor vacuum arc source |
