Mechanical properties and microstructures of reduced graphene oxide reinforced titanium matrix composites produced by spark plasma sintering and simple shear extrusion

TiB2 particulate reinforced titanium matrix composites were prepared by mechanical alloying and spark plasma sintering. Volume fraction of TiB2 powders in the composites are 5%, 10%, 15%. The effect of milling time and the volume fraction of reinforcement on microstructure and properties of the composites were studied. The results show that with increasing milling time, the size of powder particles decreases, quantity of them increases, and microstructure of the sintered samples becomes finer and more uniform. When milling time reaches 30h, the trend of powder agglomeration increases, the downward trend of the particle size becomes slowly. With the milling time, the density of titanium matrix composites is on the rise. The density of 10vol%TiB2 particulate reinforced titanium matrix composites can reach 4.799 g/cm3, with 30h milling time and sintering at 900°C. The density and hardness of the composites increase with increasing the volume fraction of TiB2. When the volume fraction of TiB2 is 15%, after milling 10h and sintered at 800°C, the density and hardness of the composites can reach 4.713g/cm3 and HV851.58.

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Wear modes in open porosity titanium matrix composites with TiC addition processed by spark plasma sintering

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(19)65072-7 ◽

2019 ◽

Vol 29 (8) ◽

pp. 1653-1664 ◽

Cited By ~ 2

Author(s):

I. FARÍAS ◽

L. OLMOS ◽

O. JIMÉNEZ ◽

M. FLORES ◽

A. BRAEM ◽

...

Keyword(s):

Spark Plasma Sintering ◽

Open Porosity ◽

Matrix Composites ◽

Titanium Matrix ◽

Titanium Matrix Composites ◽

Plasma Sintering ◽

Spark Plasma ◽

Wear Modes

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TiB Whisker and Nitrogen Solid Solution Synergistic Strengthened Titanium Matrix Composites by Ti‐BN via Spark Plasma Sintering and Hot Extrusion

Advanced Engineering Materials ◽

10.1002/adem.202100344 ◽

2021 ◽

Author(s):

Deng Pan ◽

Shufeng Li ◽

Lina Gao ◽

Lei Liu ◽

Xin Zhang ◽

...

Keyword(s):

Solid Solution ◽

Spark Plasma Sintering ◽

Hot Extrusion ◽

Matrix Composites ◽

Titanium Matrix ◽

Titanium Matrix Composites ◽

Plasma Sintering ◽

Spark Plasma

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Improved Mechanical Properties of Ultra-High Shear Force Mixed Reduced Graphene Oxide/Hydroxyapatite Nanocomposite Produced Using Spark Plasma Sintering

Nanomaterials ◽

10.3390/nano11040986 ◽

2021 ◽

Vol 11 (4) ◽

pp. 986

Author(s):

Bing-Yen Wang ◽

Steven Hsu ◽

Chia-Man Chou ◽

Tair-I Wu ◽

Vincent K. S. Hsiao

Keyword(s):

Mechanical Properties ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Spark Plasma Sintering ◽

Shear Force ◽

High Shear ◽

Spray Coatings ◽

Plasma Sintering ◽

Reduced Graphene ◽

Spark Plasma

The addition of nanomaterials, such as graphene and graphene oxide, can improve the mechanical properties of hydroxyapatite (HA) nanocomposites (NCPs). However, both the dispersive state of the starting materials and the sintering process play central roles in improving the mechanical properties of the final HA NCPs. Herein, we studied the mechanical properties of a reduced graphene oxide (r-GO)/HA NCP, for which an ultra-high shear force was used to achieve a nano-sized mixture through the dispersion of r-GO. A low-temperature, short-duration spark plasma sintering (SPS) process was used to realize high-density, non-decomposing r-GO/HA NCPs with an improved fracture toughness of 97.8% via the addition of 0.5 wt.% r-GO. Greater quantities of r-GO improve the hardness and the fracture strength. The improved mechanical properties of r-GO/HA NCPs suggest their future applicability in biomedical engineering, including use as sintered bodies in dentistry, plasma spray-coatings for metal surfaces, and materials for 3D printing in orthopedics.

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