Low pressure cold spray coating of Ti-6Al-4V with SiC-based cermet

被引：19
作者：
Adebiyi, D. I. [1 ]
Popoola, A. P. I. [1 ]
Botef, I. [2 ]
机构：
[1] Tshwane Univ Technol, Dept Chem Met & Mat Engn, PMB X680, ZA-0001 Pretoria, South Africa
[2] Univ Witwatersrand, Sch Mech Ind & Aeronaut Engn, ZA-2050 Johannesburg, South Africa
来源：
MATERIALS LETTERS | 2016年 / 175卷
基金：
新加坡国家研究基金会;
关键词：
Cold spray; Phase transformation; Peak shift; SiC; Porosity; MICROSTRUCTURE; PARAMETERS; TITANIUM; HARDNESS;
D O I：
10.1016/j.matlet.2016.03.142
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The possibility of using the low pressure cold spray system to deposit SiC-based cermet on Ti-6Al-4V was investigated at 0.99 Mpa for 450, 500 and 550 degrees C. The characterizations of the coatings reveal that the initial phases in the feedstock powder were retained in the coatings. No detrimental phase transformation, decomposition and/or decarburization of the SiC. There was peak shift between the phases of the feedstock powder and that of the coatings. This is traced to impact-induced micro-straining, amorphization and grain refinement. Low pressure cold spray coating of Ti-6A1-4V with SiC-based cermet is plausible with partially homogenous distribution of the SiC, minimal porosity and improved micro hardness value (approx 652 +/- 12.7 HV0.3) in the coating. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：63 / 67
页数：5
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