Fabrication of porous molybdenum by controlling spray particle state

Biao Chen, Chang Jiu Li, Guan Jun Yang, Jian Tao Yao, Hui Bin Huo, Cheng Xin Li

科研成果: 期刊稿件文献综述同行评审

13 引用 (Scopus)

摘要

In this study, porous molybdenum (Mo) was prepared by flame spraying of semi-molten particles with low velocity. The influence of spray particle parameters, including velocity and melting degree, on the microstructure and porosity of Mo deposit was investigated to understand the formation mechanism of the pore structure and connection between particles. The results showed that Mo spray particles with low velocity (<20 m/s) and semi-molten state can be generated by flame spraying. The Mo deposits with porosity from 39 to 61% were produced. High porosity in the deposit was achieved through the shielding effect of deposited particles. The surface-molten particles were bonded by the melt which flowed from surface to the particle/particle contact area. Moreover, the porosity decreased with the increase of melting degree of particles before impact. A 2D stacking model of semi-molten particles was proposed to explain the formation of bimodal pores and high porosity.

源语言英语
页(从-至)1032-1045
页数14
期刊Journal of Thermal Spray Technology
21
5
DOI
出版状态已出版 - 9月 2012
已对外发布

指纹

探究 'Fabrication of porous molybdenum by controlling spray particle state' 的科研主题。它们共同构成独一无二的指纹。

引用此