In situ Ti(C,N)-based cermets by reactive hot pressing: Reaction process, densification behavior and mechanical properties

Yao, Hai-Long; Wang, Hongtao; Chen, Qingyu; Bai, Xiao-Bo; Zhao, Xianrui; Fang, Yifang; Xu, Huibin; Li, Qintao

doi:10.1016/j.ceramint.2018.07.270

Cited by 18 publications

(6 citation statements)

References 30 publications

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“…This indicates that it is feasible to synthesize Ti(C,N)-TiB 2 -Co cermets by the RHP method from the Co-Ti-C-BN system. The products, which were obtained by different sintering processes, are the same as those described in earlier studies: Ti(C,N), TiB 2 , and Co. 17–21 The mechanism of the hot-pressing reaction for Co-Ti-C-BN system is discussed in detail in the literature. 21 It is worth mentioning that, although Co and Ti flowed out during sintering with 14 wt% Co content, no heterophase was found in the XRD patterns of the reaction product.…”

Section: Resultsmentioning

confidence: 99%

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The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

Zhao

Zuo

et al. 2020

Advances in Mechanical Engineering

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Ti(C,N)-TiB2-Co cermets were in situ synthesized, via reactive hot pressing from the Co-Ti-C-BN system, with a Co content ranging from 6 to 22 wt%. The microstructure, relative density, hardness, and fracture toughness of the sintered compacts was investigated by light microscopy, scanning electron microscopy, ceramic densitometry, and Vickers hardness test. The investigations indicate that during hot pressing (compacting pressure = 30 MPa), when the Co content is 14–22 wt%, the metal binder is extruded. Co and Ti are included in the extrudate, breaking the original ratio and deteriorating the properties of the sintered products. As the Co content increases from 6 wt% to 12 wt%, the porosity increases, and the relative density increases from 97.2% to 99.5%. The fracture toughness increases from 6.1 to 6.8 MPa m1/2. The Vickers hardness first increases from 1897 HV10 to the maximum 1960 HV10 and then decreases slightly to 1945 HV10.

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Section: Resultsmentioning

confidence: 99%

“…15,16 However, there are a few studies on the preparation of Ti(C,N)-based cermets using the RHP method. In our previous studies, 17–21 Ti(C,N)-TiB 2 -Co cermets were produced in situ from the Ti-C-BN-Co system via RHP. This method produces high-density cermet.…”

Section: Introductionmentioning

confidence: 99%

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

Zhao

Zuo

et al. 2020

Advances in Mechanical Engineering

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“…TiCN-based ceramics with high red hardness, high wear resistance and low friction coefficient against metal showed excellent properties in the machining industry, especially in the finishing and semi-finishing machining of carbon steel [1][2][3]. However, low fracture toughness of TiCN-based ceramic limited its application in high-speed machining difficult-to-cut materials.…”

Section: Introductionmentioning

confidence: 99%

Cutting performances of TiCN–HfC and TiCN–HfC–WC ceramic tools in dry turning hardened AISI H13

Song

Gao

Liu

2020

Advances in Applied Ceramics

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Cutting performances of TiCN-HfC (TH) and TiCN-HfC-WC (THW) ceramic tools in dry turning hardened AISI H13 was investigated. The optimal cutting parameterscutting speed of 110 m/min, feed rate of 0.1 mm/rev and depth of cut of 0.15 mmwere obtained by the orthogonal experiment. At the optimal cutting parameters, the tool life of TH was 82 min higher than that of THW, which indicated that TH had better wear resistance than THW. Meanwhile, the workpiece had better surface quality after turned by TH than by THW. In addition, a crescent depression formed in the rake face and a jackboot-like shape appeared in the flank. The rake face took place crater wear, while the flank took place abrasive wear, oxidation wear and adhesive wear.

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“…Since the reinforcement originates from the SHS reaction, knowledge about the phase formation mechanism is required to control the microstructures of resultant products. Traditionally, the SHS mechanism is explored by the differential scanning calorimeter analysis (DSC) and comparative studies on the microstructures of samples sintered at different temperatures . The above methods are valuable, but they may not be fully reliable because of the great disparity in experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis mechanism of ZrC‐ZrB₂/Cu composites prepared by SHS‐casting method

Zhao

Yao

Wang

et al. 2019

Int J Applied Ceramic Tech

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The self-propogating high-temperature syntheis (SHS) experiments in the glove box indicated that the combustion temperature decreased and the ignition time increased with increasing B 4 C size in Cu-Zr-B 4 C system. Once B 4 C size exceeded 28 μm, the full conversion of ZrC and ZrB 2 failed. In situ ZrC and ZrB 2 ceramic particle-reinforced Cu matrix composites were produced by the self-propagating high-temperature synthesis reaction of Cu-Zr-B 4 C system in molten Cu. Moreover, the phase formation mechanism was investigated by the combustion wave quenching experiment of Cu-Zr-B 4 C powder compact in Cu liquid. Results showed that ZrC and ZrB 2 were mainly formed by the dissolution-reaction-precipitation mechanism.A developed method arresting the combustion front of a reactant in molten metal was proposed.

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In situ Ti(C,N)-based cermets by reactive hot pressing: Reaction process, densification behavior and mechanical properties

Cited by 18 publications

References 30 publications

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

Cutting performances of TiCN–HfC and TiCN–HfC–WC ceramic tools in dry turning hardened AISI H13

In situ synthesis mechanism of ZrC‐ZrB₂/Cu composites prepared by SHS‐casting method

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In situ Ti(C,N)-based cermets by reactive hot pressing: Reaction process, densification behavior and mechanical properties

Cited by 18 publications

References 30 publications

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB2-Co cermets prepared in situ via reactive hot pressing

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB2-Co cermets prepared in situ via reactive hot pressing

Cutting performances of TiCN–HfC and TiCN–HfC–WC ceramic tools in dry turning hardened AISI H13

In situ synthesis mechanism of ZrC‐ZrB2/Cu composites prepared by SHS‐casting method

Contact Info

Product

Resources

About

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB₂-Co cermets prepared in situ via reactive hot pressing

In situ synthesis mechanism of ZrC‐ZrB₂/Cu composites prepared by SHS‐casting method