水导轴承等离子堆焊Ni60合金组织及其耐腐蚀性能
TG146.1+5%TG456.2%TG455; 采用等离子堆焊技术在Z2CN18-10核电用不锈钢表面堆焊Ni60合金,并研究Ni60合金堆焊层的组织结构、硬度和耐蚀性能.结果表明:堆焊层组织主要由γ-Ni、碳化物、硼化物以及γ-Ni和硼化物的共晶组成,堆焊层的底层、中间层和顶层位置各相体积分数不同,中间层菊花状组织最多.Ni60堆焊层硬度约为500HV,明显高于Z2CN18-10不锈钢基体,菊花状共晶组织有助于提高堆焊层硬度.Ni60在硼酸中的钝化能力明显高于海水,且与Z2CN18-10不锈钢的自腐蚀电位差较小,不易发生电偶腐蚀.在模拟海水中堆焊层中间层耐腐蚀性能优于堆焊层的底部和顶部,与...
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| Published in | 材料工程 Vol. 46; no. 5; pp. 106 - 111 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
沈阳鼓风机集团股份有限公司研究院,沈阳110869
20.05.2018
辽宁省凝固控制与数字化制备技术重点实验室,辽宁 大连116024%大连理工大学 材料科学与工程学院,辽宁 大连,116024%沈阳鼓风机集团股份有限公司研究院,沈阳,110869 大连理工大学 材料科学与工程学院,辽宁 大连116024 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 |
| DOI | 10.11868/j.issn.1001-4381.2015.001351 |
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| Abstract | TG146.1+5%TG456.2%TG455; 采用等离子堆焊技术在Z2CN18-10核电用不锈钢表面堆焊Ni60合金,并研究Ni60合金堆焊层的组织结构、硬度和耐蚀性能.结果表明:堆焊层组织主要由γ-Ni、碳化物、硼化物以及γ-Ni和硼化物的共晶组成,堆焊层的底层、中间层和顶层位置各相体积分数不同,中间层菊花状组织最多.Ni60堆焊层硬度约为500HV,明显高于Z2CN18-10不锈钢基体,菊花状共晶组织有助于提高堆焊层硬度.Ni60在硼酸中的钝化能力明显高于海水,且与Z2CN18-10不锈钢的自腐蚀电位差较小,不易发生电偶腐蚀.在模拟海水中堆焊层中间层耐腐蚀性能优于堆焊层的底部和顶部,与基体的自腐蚀电位差较大,容易出现电偶腐蚀. |
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| AbstractList | TG146.1+5%TG456.2%TG455; 采用等离子堆焊技术在Z2CN18-10核电用不锈钢表面堆焊Ni60合金,并研究Ni60合金堆焊层的组织结构、硬度和耐蚀性能.结果表明:堆焊层组织主要由γ-Ni、碳化物、硼化物以及γ-Ni和硼化物的共晶组成,堆焊层的底层、中间层和顶层位置各相体积分数不同,中间层菊花状组织最多.Ni60堆焊层硬度约为500HV,明显高于Z2CN18-10不锈钢基体,菊花状共晶组织有助于提高堆焊层硬度.Ni60在硼酸中的钝化能力明显高于海水,且与Z2CN18-10不锈钢的自腐蚀电位差较小,不易发生电偶腐蚀.在模拟海水中堆焊层中间层耐腐蚀性能优于堆焊层的底部和顶部,与基体的自腐蚀电位差较大,容易出现电偶腐蚀. |
| Abstract_FL | The Ni60 overlay was deposited on Z2CN18-10 stainless steel substrate by plasma trans-ferred arc(PTA)method,and the microstructure,hardness and corrosion resistance of Ni60 overlay were investigated.The results show that the overlay mainly consists of Ni-rich γ solid solution(γ-Ni),borides and carbides,and γ-Ni and borides eutectic structure.The overlay from the top to bot-tom shows different phase fractions,and the amount of chrysanthemum-like structure in the middle is large.The hardness of Ni60 overlay is around 500HV,which is higher than that of Z2CN18-10 stain-less steel.The hardness increase is attributed to the chrysanthemum-like eutectic structure.In the bo-rate,Ni60 exhibits higher passivation ability than that in seawater,and the corrosion potential of Ni60 alloy is similar to Z2CN18-10 stainless steel.In simulated seawater,the corrosion resistance of over-lay in the middle is more superior than that in the bottom and top.Due to the large difference of corro-sion potential in seawater,the galvanic corrosion is prone to occur between Ni60 overlay and Z2CN18-10 stainless steel. |
| Author | 邓德伟 牛婷婷 刘海英 张林 田鑫 孙奇 |
| AuthorAffiliation | 大连理工大学 材料科学与工程学院,辽宁 大连116024;沈阳鼓风机集团股份有限公司研究院,沈阳110869;辽宁省凝固控制与数字化制备技术重点实验室,辽宁 大连116024%大连理工大学 材料科学与工程学院,辽宁 大连,116024%沈阳鼓风机集团股份有限公司研究院,沈阳,110869 |
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| Author_FL | TIAN Xin SUN Qi DENG De-wei LIU Hai-ying NIU Ting-ting ZHANG Lin |
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| DocumentTitle_FL | Microstructure and Corrosion Resistance of Ni60 Alloy Overlay Deposited by PTA Method on Water Guide Bearing |
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| Keywords | Ni60 hardness 显微组织 极化曲线 microstructure polarization curve 硬度 等离子堆焊 PTA |
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| Publisher | 沈阳鼓风机集团股份有限公司研究院,沈阳110869 辽宁省凝固控制与数字化制备技术重点实验室,辽宁 大连116024%大连理工大学 材料科学与工程学院,辽宁 大连,116024%沈阳鼓风机集团股份有限公司研究院,沈阳,110869 大连理工大学 材料科学与工程学院,辽宁 大连116024 |
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| Title | 水导轴承等离子堆焊Ni60合金组织及其耐腐蚀性能 |
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