Fabrication and characterization of Ti6Al4V/TiB2–TiC composites by powder metallurgy method

Anandajothi, M.; Ramanathan, S.; Ananthi, V.; Narayanasamy, P.

doi:10.1007/s12598-016-0732-5

Cited by 27 publications

(10 citation statements)

References 23 publications

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“…The dosages of HA and TiB 2 were determined based on the results of the previous studies. 5,8 During the operation of ball mill, the mass ratio of stainless steel ball to the mixture was 10. Figure 1 shows the micromorphology of the milled mixture with good dispersion of HA and TiB 2 .…”

Section: Methodsmentioning

confidence: 99%

“…To improve the properties of these materials, some additives may be used. For instance, a small amount of TiB 2 (∼5 wt %) may be added to the mixture of titanium/titanium alloy and HA to induce its reaction with Ti during sintering for the production of TiB, which bonds the composite components, thereby improving the mechanical performance of the composites . In general, the sintering process is carried out in a vacuum, protective, or inert atmosphere (typically Ar) to prevent adverse reactions such as oxidation of titanium. , It was also reported that nitriding could enhance the wear resistance of the titanium alloy .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

et al. 2020

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The effect of atmosphere on the fabrication of boronized Ti6Al4V/hydroxyapatite (HA) composites was investigated by microwave sintering of the mixture of Ti6Al4V alloy, HA, and TiB 2 powders at 1050 °C for 30 min in the mixed gases of Ar + N 2 , Ar + CO, and Ar + H 2 , respectively. The presence of N 2 , CO, and H 2 in the atmosphere caused formations of TiN, TiC, and TiH 2 in the composites, respectively, together with evident microstructural changes that determined the mechanical properties (compressive strength, compressive modulus, and Vickers microhardness) and wettabilities of the composites after sintering. It was found that the composite exhibited the best mechanical performance with compressive strength of 148.59 MPa, compressive modulus of 13.9 GPa, and Vickers microhardness of 300.39 HV by microwave sintering in the mixed gas of Ar + H 2 , followed by those obtained in the mixed gases of Ar + N 2 and Ar + CO. All of the composites possessed desirable wettabilities, irrespective of the sintering atmosphere, as demonstrated by their very low water contact angles (≤31.9°). The results indicated that it is critical to control the extents of nitration and carbonization for maintaining the performance of the composites, especially the mechanical properties, whereas there is no strict requirement for the same objective using the mixed gas of Ar + H 2 in which qualified composites could be obtained for implant applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

et al. 2020

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“…The formation of various hard phases played a critical role in improving the mechanical properties of coatings. 25,26…”

Section: Phase Compositionmentioning

confidence: 99%

Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

Gong

Miao

et al. 2021

Advances in Mechanical Engineering

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All the time, the wear resistance of TC4 titanium alloy restricts its application in friction parts. In order to solve this problem, in this work, CeO2/Ni60A composite coatings (0, 1, 2, 3, 4 wt.% CeO2) were prepared on TC4 titanium alloy by laser cladding technology. The detection and characterization of the coatings were mainly carried out by X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy-dispersive spectrometer, Vickers hardness test, and wear test. The results showed that appropriate proportion of CeO2 powder could effectively reduce the crack sensitivity of Ni60A coating on TC4 substrate. While the amount of CeO2 powder was 3wt.%, there were no obvious cracks, pores, and other defects in the coating. Coatings mainly consisted of Ti2Ni, TiC, TiB2, Ce2O3, and the substrate α–Ti. CeO2 has negligible influence on the composition of the phase, but it significantly increased the absorption rate of the powder to light, promoted the fluidity of the molten pool. Among five coatings, the average hardness of the 3Ce coating was the highest and the highest hardness value could reach 1163.7 HV0.3, which was 3.58 times higher than TC4 substrate, the friction coefficient was 0.307, and the wear rate was 1.11 × 10−5 mm3/N m, which reflected extremely high wear resistance performance. Adding an appropriate amount of CeO2 improved the microstructure of the coating, and realized the fine crystal strengthening of the coating.

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“…The Vickers micro hardness test is an essential part to measure the material strength and easier rather than other hardness tests. The experiment was conducted as per ASTM E 384 standards applying at a load of 100 g and a dwell time 15 s [11]. The tests are carried out at three different positions for each sample average readings are calculated and are shown in Table 4.…”

Section: Measurement Of Hardness Compression Strength and Bulk Densitymentioning

confidence: 99%

A novel approach for utilization of agro-industrial waste materials as reinforcement with Al–7Si–0.3Mg matrix hybrid composite on tribological behaviour

Vinod

Ramanathan

Anandajothi³

2018

SN Appl. Sci.

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Waste particles are the huge environmental problem facing today. This paper mainly focuses on utilization of waste particles and aspect of tribology by examining economic, environmental impact on wear loss and coefficient of friction. Aluminium with a different weight fraction of agro (RHA) and industrial (fly ash) waste particulates are fabricated by double stir-casting process. The dry sliding wear behaviour of Al alloy and aluminium hybrid composites for various applied load, sliding distance with sliding speed on wear rate and friction coefficient was conducted by pin-on-disk apparatus. The hypothesis of this study is decreasing the wear loss and coefficient of friction increasing the lifespan of material and also minimising the cost of material. Limited attempts are made on aluminium with waste particles to examine the effect of sliding wear rate. The A356/7.5%RHA-7.5% fly ash hybrid composite achieved higher wear resistance superior to the as-cast alloy.

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Fabrication and characterization of Ti6Al4V/TiB2–TiC composites by powder metallurgy method

Cited by 27 publications

References 23 publications

Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

A novel approach for utilization of agro-industrial waste materials as reinforcement with Al–7Si–0.3Mg matrix hybrid composite on tribological behaviour

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Fabrication and characterization of Ti6Al4V/TiB2–TiC composites by powder metallurgy method

Cited by 27 publications

References 23 publications

Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

Fabrication of Boronized Ti6Al4V/HA Composites by Microwave Sintering in Mixed Gases

Effect of CeO2 on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

A novel approach for utilization of agro-industrial waste materials as reinforcement with Al–7Si–0.3Mg matrix hybrid composite on tribological behaviour

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Effect of CeO₂ on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding