Ti(C, N)‐Based Cermets with Two Kinds of Core‐Rim Structures Constructed by <i>β</i>‐Co Microspheres

Yan, Hui; Deng, Ying; Su, Yong Yao; Jiang, Shan; Chen, Qiao Wang; Cao, Shi Xiu; Liu, Bing

doi:10.1155/2020/4684529

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…It was concluded by the authors that cermets mechanical characteristics can be enhanced, and elements diffusion and densification encouraged by the creation of this rim phase and sample densification can also be accelerated, with enhancement in mechanical characteristics using SPS and adding nano-WC. Development of different core-rim morphologies in processed cermets were observed by reinforcing the produced ceramics with cubic β-cobalt (β-Co) as the binder phase [39]. Powders of (Ti, W, Mo, Ta) and (C, N) were added simultaneously to generate two different core-rim morphologies in an effort to improve the microstructure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

Verma,

García-Hernández,

Luna-Domínguez

et al. 2024

Preprint

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Present research focus on the effect of different processing routes on physical and mechanical properties of nano Ti(CN) based cermet’s with metallic binders. Tungsten carbide (WC) is added as secondary carbide and Ni-Co are added as metallic binders in nano Ti(CN) based cermet processed via Conventional and Spark Plasma Sintering (SPS). Systematic comparison of composition and sintering conditions for different cermet’s’ systems is done to design the novel composition and sintering conditions. Nano TiCN powder was prepared by 30hr of ball milling. Highest density of >98.5% percent was achieved for SPS processed cermet’s sintered at 1200°C and 1250°C for 3 min. at 60 MPa pressure in comparison to conventionally sintered cermet’s at 1400°C for 1hr with two stage compaction process, uniaxially at 150 MPa and isostatically at 300 MPa pressure respectively. Comparison of XRD analysis of milled powders of different time intervals was done to understand the characteristics of the as received and milled powders. Peak broadening was observed after 5 hr. of ball milling, and it increased till 30hr. Also, peak broadening and refined carbide size was observed in XRD and SEM micrograph of SPS processed cermet. TEM analysis of milled powder showed internal structure having regular periodic arrangement of planes. SEM (BSE) images of all cermets primarily showed three major microstructural phases of core-rim-binder with black, grey and white contrast respectively. In the present sintering conditions high hardness of ~16 GPa and fracture toughness of ~9 MPa m1/2 was obtained for SPS processed cermets sintered at higher temperature.

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Section: Introductionmentioning

confidence: 99%

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

Verma,

García-Hernández,

Luna-Domínguez

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Effect of Processing Routes on Physical and Mechanical Properties of Advanced Cermet System

Verma,

García-Hernández,

Luna-Domínguez

et al. 2024

Ceramics

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The present research focuses on the effects of different processing routes on the physical and mechanical properties of nano Ti(CN)-based cermets with metallic binders. Tungsten carbide (WC) is added as a secondary carbide and Ni-Co is added as a metallic binder to nano Ti(CN)-based cermet processed via conventional and spark plasma sintering (SPS). A systematic comparison of the composition and sintering conditions for different cermets’ systems was carried out to design novel composition and sintering conditions. Nano TiCN powder was prepared by 30 h of ball milling. The highest density of >98.5% was achieved for the SPS-processed cermets sintered at 1200 °C and 1250 °C for 3 min at 60 MPa of pressure in comparison to the conventionally sintered cermets at 1400 °C for 1 h with a two-stage compaction process—uniaxially at 150 MPa and isostatically at 300 MPa of pressure. Comparative X-ray diffraction (XRD) analysis of the milled powders at different time intervals was performed to understand the characteristics of the as-received and milled powders. Peak broadening was observed after 5 h of ball milling, and it increased to 30 hr. Also, peak broadening and a refined carbide size was observed in the XRD and scanning electron microscope (SEM) micrographs of the SPS-processed cermet. Transmission electron microscope (TEM) analysis of the milled powder showed that its internal structure had a regular periodic arrangement of planes. SEM base scattered electron (BSE) images of all the cermets primarily showed three major microstructural phases of the core–rim–binder with black, grey, and white contrast, respectively. With the present sintering conditions, a high hardness of ~16 GPa and a fracture toughness of ~9 MPa m1/2 were obtained for SPS-processed cermets sintered at higher temperatures.

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Ti(C,N) and WC-Based Cermets: A Review of Synthesis, Properties and Applications in Additive Manufacturing

et al. 2021

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In recent years, the use of cermets has shown significant growth in the industry due to their interesting features that combine properties of metals and ceramics, and there are different possible types of cermets, depending on their composition. This review focuses on cemented tungsten carbides (WC), and tungsten carbonitrides (WCN), and it is intended to analyze the relationship between chemical composition and processing techniques of these materials, which results in their particular microstructural and mechanical properties. Moreover, the use of cermets as a printing material in additive manufacturing or 3D printing processes has recently emerged as one of the scenarios with the greatest projection, considering that they manufacture parts with greater versatility, lower manufacturing costs, lower raw material expenditure and with advanced designs. Therefore, this review compiled and analyzed scientific papers devoted to the synthesis, properties and uses of cermets of TiC and WC in additive manufacturing processes reported thus far.

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Ti(C, N)‐Based Cermets with Two Kinds of Core‐Rim Structures Constructed by β‐Co Microspheres

Cited by 3 publications

References 13 publications

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

Effect of Processing Routes on Physical & Mechanical Properties of Advanced Cermet System

Effect of Processing Routes on Physical and Mechanical Properties of Advanced Cermet System

Ti(C,N) and WC-Based Cermets: A Review of Synthesis, Properties and Applications in Additive Manufacturing

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