Cold Sprayability of Mixed Commercial Purity Ti Plus Ti6Al4V Metal Powders

被引：30

作者：

Aydin, Huseyin ^{[1
]}

Alomair, Mashael ^{[1
]}

Wong, Wilson ^{[1
]}

Phuong Vo ^{[2
]}

Yue, Stephen ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ, Canada

[2] Natl Res Council Canada, Boucherville, PQ, Canada

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2017年 / 26卷 / 03期

关键词：

cold spray; deposition efficiency; mixed metal powders coating; porosity; GAS DYNAMIC-SPRAY; TITANIUM DEPOSITS;

D O I：

10.1007/s11666-017-0528-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the present work, metallic composite coatings of commercial purity Ti plus Ti6Al4V were produced by cold spraying to explore the effect of mixing on porosity and mechanical properties of the coatings. The coatings were deposited using N-2 gas at 800 A degrees C and 4 MPa pressure on 1020 steel substrate. Coating characteristics were studied by examining porosity percentages and Vickers's hardness. The microstructure was examined using optical and electron microscopy techniques. It was observed that mixing metal powders can lead to improvements in cold sprayability, specifically decreases in the porosity of the 'matrix' powder. It is shown that a critical addition can significantly influence porosity, but above this critical level, there is a little change in porosity. Hardness differences between the two powders are considered to be the first-order influence, but differences in particle sizes and morphology may also be contributing factors.

引用

页码：360 / 370

页数：11

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