The effect of MgO addition on the microstructure and mechanical properties of alumina ceramic obtained by spark plasma sintering

Pristinskiy, Yuri; Pinargote, Nestor Washington Solís; Smirnov, Antón

doi:10.1016/j.matpr.2019.07.058

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…Titanium carbide (TiC) is an extremely hard, strong, and thermally stable ceramic reinforcement [20,21]. It has a melting point of 2790 °C, a Rockwell hardness of 86 HRA, a Vickers hardness of 960 HV, a tensile modulus of 530 GPa [22].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Karanam

Rathinam²,

Mouria

et al. 2023

Advances in Materials Science and Engineering

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In this research, the first work was carried out to manufacture MgO-based metal matrix composite containing 3 wt%. Sintering parameters, such as temperature, pressure, and time were subjected to Taguchi analysis to identify the most significant effect on magnesium oxide physical and mechanical characteristics. The impact of each sintering parameter explores using the analysis of variance-structure and microstructure analysis using XRD and EDS-equipped FE-SEM. The mechanical properties of the composite are evaluated by testing its Rockwell hardness (HR) and Vickers hardness (HV). The results showed that sintering temperature was the most influential of the sintering factors on microhardness. Densification at its peak was 100%, while it peaked at 62.19 Rockwell hardness and 58.7 Vickers hardness.

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Section: Introductionmentioning

confidence: 99%

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Karanam

Rathinam²,

Mouria

et al. 2023

Advances in Materials Science and Engineering

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“…This gives the SPS method certain advantages, such as high heating rates (from 100 °C/min to 1000 °C/min) that permit faster densification, which allows sintering at lower temperatures and also with very short cycles, reducing grain growth [ 56 , 57 , 58 , 59 , 60 ]. Moreover, the possibility of applying external pressure during the sintering process makes it possible to carry out the consolidation of poorly sinterable ceramics in very short times, producing materials with better mechanical properties [ 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

Processing and Characterization of Spark Plasma Sintered SiC-TiB2-TiC Powders

et al. 2022

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SiC-TiB2-TiC composites with matrices consisting of semiconductor material (SiC), conductive materials (TiB2-TiC), or their combination were fabricated by spark plasma sintering (SPS) at 2000 °C in a vacuum under a pressure of 80 MPa for 3 min. The composition and microstructure of the obtained composites were studied by X-ray diffraction and a scanning electron microscope equipped with an energy-dispersive detector. The flexural strength, Vickers hardness, and fracture toughness of SPSed samples were determined. Based on the observations in this work, three variations of the sintering process were proposed with different matrix compositions. The dense (99.7%) 60SiC-25TiB2-15TiC vol.% sintered ceramic composites exhibited the highest strength and hardness values of the studied composites, as well as a fracture toughness of 6.2 MPa·m1/2.

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“…In addition, for obtaining a sintered ceramic part with high surface quality and accuracy, mechanical post-processing work is necessary. This post-process work is expensive and time-consuming due to the natural high hardness and brittleness of ceramics materials [ 2 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Direct Ink Writing Technology (3D Printing) of Graphene-Based Ceramic Nanocomposites: A Review

et al. 2020

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In the present work, the state of the art of the most common additive manufacturing (AM) technologies used for the manufacturing of complex shape structures of graphene-based ceramic nanocomposites, ceramic and graphene-based parts is explained. A brief overview of the AM processes for ceramic, which are grouped by the type of feedstock used in each technology, is presented. The main technical factors that affect the quality of the final product were reviewed. The AM processes used for 3D printing of graphene-based materials are described in more detail; moreover, some studies in a wide range of applications related to these AM techniques are cited. Furthermore, different feedstock formulations and their corresponding rheological behavior were explained. Additionally, the most important works about the fabrication of composites using graphene-based ceramic pastes by Direct Ink Writing (DIW) are disclosed in detail and illustrated with representative examples. Various examples of the most relevant approaches for the manufacturing of graphene-based ceramic nanocomposites by DIW are provided.

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The effect of MgO addition on the microstructure and mechanical properties of alumina ceramic obtained by spark plasma sintering

Cited by 10 publications

References 9 publications

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

Processing and Characterization of Spark Plasma Sintered SiC-TiB2-TiC Powders

Direct Ink Writing Technology (3D Printing) of Graphene-Based Ceramic Nanocomposites: A Review

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