Feedstock properties and debinding mechanism of yttria-stabilized zirconia/ stainless steel 17-4PH micro-components fabricated via two-component micro-powder injection molding process

Basir, Al; Sulong, Abu Bakar; Jamadon, Nashrah Hani; Muhamad, Norhamidi

doi:10.1016/j.ceramint.2021.04.057

Cited by 11 publications

(18 citation statements)

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“…Subsequently, the injection of the 17-4PH feedstock was conducted over the zirconia feedstock, causing the two materials to fuse. The green 17-4PH/zirconia micro-specimens produced based on the previous study parameters [ 12 , 18 ] are displayed in Table 2 . The dimensions of the specimen are schematically presented in Figure 3 .…”

Section: Methodsmentioning

confidence: 99%

“…Under the formerly investigated parameters, the solvent debinding process was performed using an MMM VentiCell 111 oven (MMM Medcenter Einrichtungen GmbH, Munich, Germany) [ 18 ]. To eliminate the palm stearin binder, the green 17-4PH/zirconia micro-sized components were immersed in acetone at 70 °C for 40 min.…”

Section: Methodsmentioning

confidence: 99%

“… Schematic of the processing method used to produce the green micro-sized 17-4PH/zirconia component, reused with permission from Elsevier [ 18 ]. …”

Section: Figurementioning

confidence: 99%

“…The most effective debinding technique is to comprehensively perform solvent and thermal debinding [ 16 , 17 ]. While the solvent debinding process facilitates the elimination of the soluble binder in the bi-material micro-part, the key purpose of the thermal debinding process is to remove the insoluble binder [ 18 ]. Sintering is the concluding phase of the 2C-µPIM, where the debound two-component micro-sized components are sintered to achieve desired physical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, 17-4PH stainless steel and 3 mol% yttria-stabilized zirconia are renowned materials in engineering. While 17-4PH is associated with excellent corrosion resistance and mechanical strength, zirconia is well-known for its fracture toughness, flexural strength, excellent wear resistance, good biocompatibility, and high-temperature stability [ 18 , 19 , 20 ]. The 2C-µPIM-processed bi-material micro-sized components of 17-4PH and zirconia can be used in many engineering applications, such as medical implants, automobile engines, and gas turbines, where metal–ceramic combinations are often used to achieve diverse functionalities at lower cost.…”

Section: Introductionmentioning

confidence: 99%

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Sintering Behavior of Bi-Material Micro-Component of 17-4PH Stainless Steel and Yttria-Stabilized Zirconia Produced by Two-Component Micro-Powder Injection Molding Process

et al. 2022

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In this research, we investigated the influence of the sintering temperature on the physical and mechanical properties of micro-sized bi-material components of 17-4PH stainless steel and 3 mol% yttria-stabilized zirconia fabricated using a two-component micro-powder injection molding (2C-μPIM) process. First, 17-4PH and zirconia powders were separately mixed with binders to obtain feedstocks, which were then injection-molded into the dumbbell shape, followed by the binder extraction process. Subsequently, the debound micro-specimens were subjected to sintering between 1250 °C and 1350 °C for 3 h. Per the observations of the microstructures using scanning electron microscopy (SEM), a strong bond between metal and ceramic in micro-sized 17-4PH/zirconia components was formed when the sintering temperature exceeded 1300 °C. The maximum relative density of 99% was achieved when the bi-material micro-part was sintered at 1350 °C. The linear shrinkage increased from 9.6% to 17.4% when the sintering temperature was increased from 1250 °C to 1350 °C. The highest hardness value of 1439.6 HV was achieved at 1350 °C along the bi-material bonding region. Moreover, a maximum tensile strength of 13.7 MPa was obtained at 1350 °C.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“… Schematic of the processing method used to produce the green micro-sized 17-4PH/zirconia component, reused with permission from Elsevier [ 18 ]. …”

Section: Figurementioning

confidence: 99%