کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1656699 | 1517591 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of interface modification by Cu-coated W powders on the microstructure evolution and properties improvement for Cu-W composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of interface modification by Cu-coated W powders on the microstructure evolution and properties improvement for Cu-W composites Effect of interface modification by Cu-coated W powders on the microstructure evolution and properties improvement for Cu-W composites](/preview/png/1656699.png)
چکیده انگلیسی
The effects of interfacial bond and homogeneous microstructure on the physical properties of Cu-W composites have been investigated. To acquire strong interfacial bond and homogeneous microstructure, different modified W powders have been designed, which W powders were coated with different Cu contents using electroless plating method. The results showed that by increasing the Cu content of the coating, the microstructure of Cu-W composites becomes homogeneous, and the physical properties, including thermal, electrical and mechanical properties, improved greatly. When 20Cu@W composite powders were used to fabricate Cu-W composites, the physical properties reached the optimal values: The thermal conductivity was 239 W/(m·K) which was close to the theoretical vaule of 240 W/(m·K), the electrical conductivity was 50.6%IACS, coefficient of thermal expansion was the minimum value of 7.3 Ã 10â 6/K, the bending strength and Vickers hardness were 976.7 MPa and 224.8 HV, respectively. These optimal values were much higher than those of mixed Cu-W composites. The properties enhancement of Cu-W composites is attributed to the strong interfacial bond between Cu and W and homogeneous microstructure. This enhancement effect was strengthened by increasing the coating's Cu content, resulting in the continuous improvement of the physical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 288, 25 February 2016, Pages 8-14
Journal: Surface and Coatings Technology - Volume 288, 25 February 2016, Pages 8-14
نویسندگان
Pingan Chen, Qiang Shen, Guoqiang Luo, Chuanbing Wang, Meijuan Li, Lianmeng Zhang, Xiangchen Li, Boquan Zhu,