Influence of Y2O3 addition on the microstructure of TiC reinforced Ti-based composite coating prepared by laser cladding

Zhang, Zhiqiang; Yang, Qian; Yu, Ziming; Wang, Hao; Zhang, Tiangang

doi:10.1016/j.matchar.2022.111962

Cited by 94 publications

(19 citation statements)

References 38 publications

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“…XRD is a prevailing nondestructive method intended to distinguish crystalline materials. It gives information of crystal defects, strain, crystallinity, average grain size, texture, phases, and structures [ 57 , 58 , 59 ]. Figure 13 shows the XRD of the “microwave clad samples” developed using a “mixture of 69.72% Ni, 19.28% Si, and 11% La 2 O 3 particles” on “SS-304 developed at optimum cladding parameters”.…”

Section: Resultsmentioning

confidence: 99%

The Microstructure and Properties of Ni-Si-La2O3 Coatings Deposited on 304 Stainless Steel by Microwave Cladding

Dwivedi¹,

Sharma

et al. 2023

Materials

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In this investigation, microwave radiation was used alongside a combination of Ni powder, Si powder, and La2O3 (Lanthanum oxide) powder to create surface cladding on SS-304 steel. To complete the microwave cladding process, 900 W at 2.45 GHz was used for 120 s. “Response surface methodology (RSM)” was utilized to attain the optimal combination of microwave cladding process parameters. The surface hardness of the cladding samples was taken as a response. The optimal combination of microwave cladding process parameters was found to be Si (wt.%) of 19.28, a skin depth of 4.57 µm, irradiation time of 118 s, and La2O3 (wt.%) of 11 to achieve a surface hardness of 287.25 HV. Experimental surface hardness at the corresponding microwave-cladding-process parameters was found to be 279 HV. The hardness of SS-304 was improved by about 32.85% at the optimum combination of microwave cladding process parameters. The SEM and optical microscopic images showed the presence of Si, Ni, and La2O3 particles. SEM images of the “cladding layer and surface” showed the “uniform cladding layer” with “fewer dark pixels” (yielding higher homogeneity). Higher homogeneity reduced the dimensional deviation in the developed cladding surface. XRD of the cladded surface showed the presence of FeNi, Ni2Si, FeNi3, NiSi2, Ni3C, NiC, and La2O3 phases. The “wear rate and coefficient of friction” of the developed cladded surface with 69.72% Ni, 19.28% Si, and 11% La2O3 particles were found to be 0.00367 mm3/m and 0.312, respectively. “Few dark spots” were observed on the “corroded surface”. These “dark spots” displayed “some corrosion (corrosion weight loss 0.49 mg)” in a “3.5 wt.% NaCl environment”.

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Section: Resultsmentioning

confidence: 99%

The Microstructure and Properties of Ni-Si-La2O3 Coatings Deposited on 304 Stainless Steel by Microwave Cladding

Dwivedi¹,

Sharma

et al. 2023

Materials

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“…Si 5 AlON 7 , Si 4 Al 2 O 2 N 6 and Si 3 Al 3 O 3 N 5 were consistent with β-sialon’s formula Si 6−z Al z O z N 8−z , and correspondingly, the z values were 1, 2, and 3, indicating that substitution of Al-O for Si-N increased with increase in sintering temperature. Yttria, as a conventional sintering additive has been proved to be an effective means of promoting densification [ 34 ]; however, no Y 2 O 3 was detected due to its low mass fraction. Furthermore, the amount of β-sialon was estimated quantitatively by the ratio of the diffractive intensities of α-Si 3 N 4 and β-sialon peaks observed from the XRD spectrum in Figure 1 .…”

Section: Resultsmentioning

confidence: 99%

Preparation of In Situ Growth Multiscale β-Sialon Grain-Reinforced Al2O3-Based Composite Ceramic Tool Materials

et al. 2023

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A kind of multiscale β-sialon grain-reinforced Al2O3 matrix composite ceramic tool material, named ASN, was prepared and studied. For the ASN, β-sialon (molecular formula: Si4Al2O2N6) was synthesized in situ by a hot-pressing and solid-solution reaction process. A total of six samples were prepared at varying sintering temperatures and holding times under vacuum conditions. The solid solution reaction mechanism of β-sialon, the phase composition, mechanical properties, microstructure, and strengthening and toughening mechanisms of the composite ASN were investigated. As a result, within the experimental parameters, an optimal ASN tool material was obtained under a pressure of 32 MPa and at a temperature of 1550 °C for 20 min. The tested mechanical properties of the optimal sample were as follows: flexural strength 997 ± 59 MPa, fracture toughness 6.4 ± 0.3 MPa·m1/2, Vickers hardness 18.2 ± 0.4 GPa, and relative density 98.1 ± 0.2%. According to crystal defect theory, the solid solution reaction mechanism of in-situ-synthesized β-sialon in an Al2O3 matrix involves a double mechanism of unequivalence (or hetero-valence) and interstitial filling. The multiscale β-sialon grains mainly consisted of four grains, which were elongated β-sialon grains with a diameter of 0.3–0.4 μm and an aspect ratio of 6–9, elongated β-sialon grains with a diameter of 70 nm and an aspect ratio of 10, β-sialon whiskers with a diameter of 0.2 μm and an aspect ratio of 12–15, and intragranular β-sialon whiskers with a diameter of 70 nm. The mechanical properties were improved due to strengthening and toughening mechanisms, such as mixed structure mode (intergranular and transgranular), elongated grain pullout, interface bonding, crack reflection, pinning, and bridging.

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“…The experimental tests show that sandwich specimens were damaged under the effect of impact load. Various criterions were selected as the fibre failure criterion for the damage model in the literatures [43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59]. To realise the damage onset of the specimens in the form of numerical simulations, a damage criterion according to the Hashin's failure criterion is used.…”

Section: Damage Modelmentioning

confidence: 99%

High-speed impact analysis of reinforced GFRP sandwich structure with lattice core using experimental and finite element methods

Khaledi

Rostamiyan

2022

Plastics, Rubber and Composites

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High-speed impact behaviour of composite sandwich panels reinforced by nano-SiO 2 has been studied in the present article. The sandwich panels were manufactured by glass/fibre epoxy composite face sheets and an M-shaped core using the vacuum-assisted resin transfer moulding (VARTM) method. To enhance the mechanical strength of the matrix, especially impact resistance, the nanoparticles were added to the resin epoxy matrix as filler. A scanning electron microscope (SEM) was utilised to observe the microscopic structure of the composites. The experimental results indicated that adding 1-3 wt-% of nano-SiO 2 into the matrix remarkably increased the impact resistance of the composite. In order to validate the results, the experimental data were compared to the finite element models, and good agreement was observed.

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Influence of Y2O3 addition on the microstructure of TiC reinforced Ti-based composite coating prepared by laser cladding

Cited by 94 publications

References 38 publications

The Microstructure and Properties of Ni-Si-La2O3 Coatings Deposited on 304 Stainless Steel by Microwave Cladding

The Microstructure and Properties of Ni-Si-La2O3 Coatings Deposited on 304 Stainless Steel by Microwave Cladding

Preparation of In Situ Growth Multiscale β-Sialon Grain-Reinforced Al2O3-Based Composite Ceramic Tool Materials

High-speed impact analysis of reinforced GFRP sandwich structure with lattice core using experimental and finite element methods

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