Formation of wear-resistant graded surfaces on titanium carbonitride-based cermets by microwave assisted nitriding sintering

Tang, Siwen; Liu, Deshun; Li, Pengnan; Chen, Yuqiang; Xiao, Xiong

doi:10.1016/j.ijrmhm.2014.09.014

Cited by 11 publications

(4 citation statements)

References 17 publications

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“…The crystal structure type of TiN and TiC is FCC, and they exhibit almost the similar electronegativity and negative anion radius (0.27 and 0.285 Å, respectively), Figure . This is truly in accordance to the law of the substitutional solid solution (Hume–Rothery). , Those factors give the possibility to form “zero dimensional” substitutional solid solution of TiN (1– x ) C x , with “ x ” increasing from 0 to 1. From the XRD spectra, it is clear that with the increase of carbon content, the peaks shift to the left gradually.…”

Section: Resultssupporting

confidence: 78%

“…This is truly in accordance to the law of the substitutional solid solution (Hume−Rothery). 21,22 Those factors give the possibility to form "zero dimensional" substitutional solid solution of TiN (1−x) C x , with "x" increasing from 0 to 1. From the XRD spectra, it is clear that with the increase of carbon content, the peaks shift to the left gradually.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and Electromagnetic Absorbing Properties of Titanium Carbonitride with Quantificational Carbon Doping

et al. 2015

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Recent studies to explore the enhanced electromagnetic properties of TiN and TiC reported that TiNC has a good performance in EM wave absorption. We prepared TiNC with quantificational percentages of carbon doping in this work. Nanotitanium oxide precursor was prepared via sol–gel method, then submicron TiN(1–x)C x with different carbon content (x = 0, 0.2, 0.4, 0.6, 0.8) was obtained via solid–gas reaction by nitriding at 900 °C with nitrogen and carbon doping at 1700 °C with argon. The composition and structure of TiN(1–x)C x change with the increase of carbon content, the lattice distortion and dipole moments were introduced into TiN crystal via carbon doping which leads to optimization of the electromagnetic properties. The influence of carbon doping was analyzed, and at carbon = 0.8, the attenuation factor “α” and impedance matching “Δ” of the sample achieved a better balance that results in a better wave absorbing effect. The resulting bandwidth lower than −10 dB is in the range 11.1 to 13.6 GHz, and the reflection loss reached to −40.1 dB at 12.4 GHz with the sample thickness of 1.32 mm. The frequency of maximum reflection loss obeys the quarter-wavelength matching model. TiN(1–x)C x shows good electromagnetic absorbing properties and it is in accordance with the “thin, light, wide, strong” application requirements of microwave absorption materials.

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Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Synthesis and Electromagnetic Absorbing Properties of Titanium Carbonitride with Quantificational Carbon Doping

et al. 2015

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“…Finally, the pre-sintered sample was placed in a vacuum microwave oven with a frequency of 2.45 GHz heated to the temperature of 1400 to 1550 ∘ C for 30 minutes. Schematics of the microwave sintering furnace therein are shown in Refer [12,13]. There was no auxiliary heating unit in the heating structure.…”

Section: Materials Preparationmentioning

confidence: 99%

“…Studies have shown that the non-thermal effect and bulk heating characteristics of microwave heating can reduce the activation energy to promote the densification of materials when sintering of many materials [10,11]. Previous studies by the authors show that WC-TiC-Co and TiCN-Co based gradient materials with high mechanical performance can be quickly prepared by microwave sintering [12,13]. Compared with Co with a pure metal bond, the covalent bond and the metal bond compound Ni 3 Al can be used as a binder phase to exert the non-thermal effect advantage of microwave sintering.…”

Section: Introductionmentioning

confidence: 99%

Preparation of WC-TiC-Ni3Al-CaF2 functionally graded self-lubricating tool material by microwave sintering and its cutting performance

Tang

Wang

Liu

et al. 2020

High Temperature Materials and Processes

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AbstractWith the concern of the environment, green dry cutting technology is getting more and more attention and self-lubricating tool technology plays an important role in dry cutting. Due to the demand for high temperature performance of tools during dry cutting process, cemented carbide with Ni3Al as the binder phase has received extensive attention due to its excellent high temperature strength and high temperature oxidation resistance. In this paper, WC-TiC-Ni3Al-CaF2 graded self-lubricating material and tools were prepared by microwave heating method, and its microstructure, mechanical properties and cutting performance were studied. Results show that gradient self-lubricating material can be quickly prepared by microwave heating technology, and the strength is equivalent to that of conventional heating technology. CaF2 not only plays a role in self-lubrication, but also refines the grain of the material. A reasonable gradient design can improve the mechanical properties of the material. When the gradient distribution exponent is n1 = 2, the material has high mechanical properties. Cutting experiments show that the WC-TiC-Ni3Al-CaF2 functional gradient self-lubricating tool has better cutting performance than the homogeneous WC-TiC-Ni3Al hard alloys.

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Microwave sintering of TiCN-based cermets prepared from electroless Co-coated (Ti, W, Mo, V)CN powders

Pang

Liu

et al. 2017

Rare Met.

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Formation of wear-resistant graded surfaces on titanium carbonitride-based cermets by microwave assisted nitriding sintering

Cited by 11 publications

References 17 publications

Synthesis and Electromagnetic Absorbing Properties of Titanium Carbonitride with Quantificational Carbon Doping

Synthesis and Electromagnetic Absorbing Properties of Titanium Carbonitride with Quantificational Carbon Doping

Preparation of WC-TiC-Ni3Al-CaF2 functionally graded self-lubricating tool material by microwave sintering and its cutting performance

Microwave sintering of TiCN-based cermets prepared from electroless Co-coated (Ti, W, Mo, V)CN powders

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