K.W. Richter
,
H. Ipser
金属学报(英文版)
The development of well defined and thermally stable ohmic contacts for Ⅲ- Ⅴ semi-conductors like InSb and GaSb is still a challenging problem in semiconductor devicetechnology. As device processing usually includes the exposure to elevated tempera-tures, interface reactions often occur during metallization and further heat treatment.It is thus important to understand the respective phase equilibria of the involved el-ements. From the thermodynamic point of view, binary and ternary compounds inequilibrium with the respective compound semiconductor would be the best choice forcontact materials as these contacts will be stable even after long exposure to elevatedtemperatures. These possible candidates for contact materials may be directly obtainedfrom the phase diagrams.During the last years we investigated several phase diagrams of transition metals withGaSb and InSb. Experimental results in the systems Ga-Ni-Sb, Ga-Pd-Sb, Ga-Pt-Sb,In-Ni-Sb and In-Pd-Sb are summarized and are discussed in the context of contactchemistry.
关键词:
contact material
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null
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null
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null
朱艳彩
,
王景芹
,
安立强
,
王海涛
稀有金属材料与工程
采用液相原位化学法制备了一种超细的纳米级SnO2-TiO2复合粉末.对Ti元素在复合粉体中分布形态及对复合纳米粉体显微组织的影响进行了研究.SEM分析结果表明,SnO2-TiO2复合粉末颗粒细小、均匀,没有明显的团聚.采用粉末冶金法制备了一种新型的Ag/SnO2-TiO2电接触材料,并对该材料的电气性能进行了试验.结果表明,所研制的新材料通过了接通与分断能力试验,具有较好的抗电弧侵蚀性能,并且温升较低.因此,所制备的Ag/SnO2-TiO2电接触材料有可能成为替代Ag/SnO2的新型材料.
关键词:
电接触材料
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Ag/SnO2-TiO2
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粉末冶金
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显微组织
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电气性能
付翀
,
王俊勃
,
杨敏鸽
,
侯锦丽
,
丁秉钧
金属学报
doi:10.3724/SP.J.1037.2012.00599
采用等离子喷涂技术在纯Cu表面制备了Ag/(Sn0.8La0.2)O2涂层,利用XRD和SEM对涂层的相结构和微观组织进行了分析,用拉伸法测定了涂层与基体的结合强度,通过电弧侵蚀实验测试了涂层的耐电压强度以及耐电弧侵蚀性能.结果表明,所得涂层结构均匀致密,与基体结合强度为18.8 MPa,涂层内纳米级(Sn0.8La0.2)O2颗粒均匀分布在Ag基体中;涂层的耐电压强度以及电弧烧蚀速率与块体合金接近,分别为3.76×107 V/m和37.7 μg/C;电弧侵蚀实验后,涂层表面阴极斑点分散,烧蚀轻微,其电弧侵蚀机制有从液态喷溅向蒸发侵蚀转变的趋势.
关键词:
等离子喷涂
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Ag/(Sn0.8La0.2)O2
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触头合金
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耐电压强度
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电弧侵蚀
付翀
,
侯锦丽
,
郭天福
,
王俊勃
,
丁秉钧
,
郑晶
稀有金属材料与工程
采用等离子喷涂技术在铜基体表面制备了Ag-SnO2涂层,应用XRD和SEM对涂层的相结构和微观组织进行了表征,通过拉伸和硬度试验测定了涂层的力学性能,并采用电弧侵蚀试验测试了涂层的耐电弧侵蚀性能.结果表明,所得涂层结构均匀致密,涂层内纳米级SnO2颗粒均匀分布在银基体中;涂层的力学性能和电弧侵蚀性能与块体合金接近;电弧侵蚀试验后,涂层表面阴极斑点分散,烧蚀轻微,表明所制备的Ag-SnO2涂层具有良好的耐电弧侵蚀特性.
关键词:
等离子喷涂
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Ag-SnO2
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触头材料
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电弧侵蚀