Application of Electroforming Process to Bulk Amorphous Ni-W Alloy

被引：15
|
作者：
Takigawa, Yorinobu [1 ]
Wakayama, Shin [1 ]
Matsui, Isao [1 ]
Uesugi, Tokuteru [1 ]
Higashi, Kenji [1 ]
机构：
[1] Osaka Prefecture Univ, Dept Mat Sci, Grad Sch Engn, Sakai, Osaka 5998531, Japan
来源：
MATERIALS TRANSACTIONS | 2011年 / 52卷 / 01期
关键词：
bulk amorphous nickel-tungsten alloy; electroforming process; homogeneity; compressive strength; NANOCRYSTALLINE NI; SLIDING WEAR; ELECTRODEPOSITION; FABRICATION; EVOLUTION; HARDNESS; MEMS; BATH;
D O I：
10.2320/matertrans.M2010288
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Homogeneous bulk amorphous Ni-W alloy with thickness of more than 2 mm is fabricated by an electroforming process. By suppressing the side reaction and by preserving the mass balance between consumed ions by electrodeposition and supplemented ions by the solution of Ni and W anodes in the electroforming system, the standard deviation of W-concentration throughout the specimen is kept to 1.3 at%. As the result of micro-Vickers hardness tests, the standard deviation of micro-hardness decreases about 90% in bulk materials in comparison with thin-film materials fabricated by conventional electroforming process. This result indicates that it is important to minimize the fluctuation of W-concentration in the specimen for obtaining the micrometer-scale high reliability of hardness. The compressive strength of bulk amorphous Ni-W alloy is about 2.7 GPa. High compressive strength of amorphous Ni-W alloy can be clearly shown. [doi;10.2320/matertrans.M2010288]
引用
收藏
页码：37 / 40
页数：4
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