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Mechanical and wear properties of Si<sub>3</sub>N<sub>4</sub> reinforced titanium composites

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Title Statement Mechanical and wear properties of Si<sub>3</sub>N<sub>4</sub> reinforced titanium composites
 
Added Entry - Uncontrolled Name Mutuk, Tuğba ; Department of Metallurgical and Materials Engineering, Ondokuz Mayis University, Samsun 55139, Turkey
Gürbüz, Mevlüt ; Department of Mechanical Engineering, Ondokuz Mayis University, Samsun 55139, Turkey
 
Uncontrolled Index Term Titanium, Compressive strength, Microstructure, Silicon nitride, Powder metallurgy
 
Summary, etc. <p>In the present study, Si<sub>3</sub>N<sub>4</sub> reinforced titanium composites were produced by powder metallurgy method.  The effect of various percentages of Si<sub>3</sub>N<sub>4</sub> (0-9 wt.%) on the microstructure, density, hardness and compressive strength of titanium (Ti) composites have been investigated. After sintering at 1100<sup>o</sup>C for 120 min., the mechanical properties were significantly developed up to 3 wt.% Si<sub>3</sub>N<sub>4</sub>. The highest hardness and the greatest compressive strength were obtained for 3 wt.% Si<sub>3</sub>N<sub>4</sub> reinforced composites (698.5 HV and 1093 MPa) when compared to pure titanium (414.2 HV and 826 MPa). Si<sub>3</sub>N<sub>4</sub> addition developed the wear properties of composites when compared pure titanium. The lowest wear rate (1.36x10<sup>-5</sup>, 2.75x10<sup>-5</sup> and 5.15x10<sup>-5</sup> mm<sup>3</sup>/Nm for 10 N, 20 N and 30 N) were obtained for 3 wt.% Si<sub>3</sub>N<sub>4</sub> reinforced titanium composite. The scanning electron image, elemental mapping and line analyses confirm the uniform distribution of Si<sub>3</sub>N<sub>4</sub> powder in Ti matrix. Above this ratio, the properties of composites were deteriorated due to agglomeration tendency of Si<sub>3</sub>N<sub>4</sub> powder. There were no in-situ formed second phases of composite structure from the X-ray diffraction analyses.</p>
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2021-02-23 14:12:30
 
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http://op.niscair.res.in/index.php/IJEMS/article/view/26529
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 27, ##issue.no## 5 (2020): IJEMS- OCTOBER 2020
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJEMS/article/download/26529/465482135
http://op.niscair.res.in/index.php/IJEMS/article/download/26529/465482136
 
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