— Three groups of AlSiTiCrNiCu high entropy alloy (HEA) particles reinforced Al606l composites were fabricated by spark plasma sintering at 520 and 570 °C (S520, S570) and by hot-pressed sintering at 570 °C(H570). The AlSiTiCrNiCu (AST) particles used as reinforcements were synthesized by mechanical alloying. The influences of the …

 — In December 2002, Companhia Siderurgica Belgo-Mineira, Brazil incorporated the HPS (Hybrid Pelletized Sinter) process to its sinter plant in Monlevade Works.

Spark Plasma Sintering: Process Fundamentals Pasquale Cavaliere, B. Sadeghi, and A. Shabani 1 Introduction Sintering refers to the process of firing and consolidating powders at temperatures lower than their melting point, where diffusional mass transport leads to bonding between particles and the formation of a dense body. Bulk samples could be

 — HPS (Hybrid Pelletized Sinter, two-stage drums one-stage disc) mixing and pelletizing process. HPS mixing pellet sintering, belonging to the mini pellet sintering …

 — Nb-Si based ultrahigh-temperature alloys with the composition of Nb-22Ti-15Si-5Cr-3Al (atomic percentage, at. %) were prepared by hot press sintering (HPS) at 1250, 1350, 1400, 1450 and …

 — sintering process. Zhang et al. [2] have shown first evidence for the occurrence of a spark . Citation: Le Godec, Y.; Le Floch, S. Recent Developments of . High-Pressure Spark Plasma .

 — The hybrid pelletized sinter process is an effective method to utilize low-grade iron ore fines directly as a sinter feed. The hybrid pelletized sintering (HPS) process is a non-conventional ...

 — Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents, and solid fuel (coke). The purpose of the sintering process is manufacturing a product with the suitable characteristics (thermal, mechanical, physical and chemical) to be fed to the blast furnace.

 — TCN–50 wt.%Pd/Ag, too, is denser than the membrane after CIP process only due to sintering that leads to more condensed particles.Hydrogen permeability of TCN–Ni membrane after CIP process and that of TCN–Ni membrane after HPS process is shown in Fig. 3: the permeability is 2.04 × 10 −5 mol/m s Pa 1/2 for the former, and 1.53 × 10 −8 …

The sintering process is based on treating a mix (mineral fines, return fines, fluxes, etc.) layer in presence of coke dust to the action of a burner placed in the surface of the layer.

Direct metal laser sintering, or DMLS, is a cutting-edge 3D method enabling the production of detailed, intricate metal parts. It uses a high-powered laser to selectively melt and fuse powdered metal into the desired shape. This process of creating a solid object through heat and pressure is called sintering.

Sintering is a process that consists in the thermal agglomeration of a mixture of fines that comprise iron ore, recycled iron and steelmaking products, slag-forming ... HPS process, hybrid pelletized sinter; MEBIOS, mosaic embedding iron ore sintering; and, CAP, composite agglomeration process. Different parameters

 — When the disk type separation membrane could fabricate to dense structured membrane by hot press sintering (HPS) process [8]. In Xiaojuan Hu's previous study, the nitrogen flux through the fresh Al 2 O 3 substrate reaches about 1300 m 3 /(m 2 h bar), whereas that through the Pd/Al 2 O 3 membrane is still as high as about 240 m 3 /(m 2 h …

2105 Page 4 of 18 J Mater Sci: Mater Electron (2023) 34:2105 solubility of ceramic materials (Sc,p) as described in Eq. (2) [21]: where Sf is the solubility of a at surface, α is the cur- vature shape factor, γsl is the surface tension between liquid, a is the particle size, Ωs is the molar volume of the solid, Ωl is the apparent molar volume of the

 — To utilize the iron ore fines in plants, Nippon Kokan Keihin company (presently, JFE Steel Corporation) developed the HPS process. 4 Investigators have tried to improve the utilization of iron ore fines in sinter beds by making HPS. 5,6 The HPS process is a modified form of the conventional sintering process. In this HPS process, iron ore …

 — The sintering step of the HPS process was described in detail in our previous article (Ref 15). The sintering process parameters for high temperature and high pressure are sintering pressure of 5.5 GPa, sintering temperature of 1000 °C, and holding time of 10 minutes. The resultant samples are then further annealed in air for 10 hours …

 — The Sintering Process. Sintering works in a three-stage process: A primary part powder blend, with a bonding agent, is formed into a desired shape. The bonding agent sticks the powder together to make …

 — HPS (Hybrid Pelletized Sinter, two-stage drums one-stage disc) mixing and pelletizing process. HPS mixing pellet sintering, belonging to the mini pellet sintering process, mixes iron ore fines, return fines, fluxes, and fuel with water to form mini pellets with a diameter of 5-10mm. These mini pellets are coated with a certain proportion of ...

As shown in Fig. 3, plenty of novel sintering techniques for the solid-phase sintering process have been developed, such as hot-pressing sintering (HPS) [11,31], cold-pressing sintering (CPS) [32–34], spark plasma sintering (SPS) [35,36], and microwave sintering (MWS) [37–39]. Among them, the SPS, a rapid sintering process, can ...

A machine-learning approach using a multi-layered neural network (NN) with application to a sintering process in an iron- and steel-making plant induces 'operational rules' that determine operational conditions to obtain products that meet a given quality specification. This paper presents a machine-learning approach using a multi-layered neural network …

 — Various strategies have been investigated to improve the densification of the composites. For example, approaches that elevate the treatment temperature to above the melting point, such as arc melting (29–31), or by exerting an external pressure, such as hot pressing (32–34), can ameliorate the casting or sintering results of these ultrahigh …

An in-situ HPS sintering device that can be coupled to a laboratory X-ray microscope has been developed in this study. With the help of this device, in-situ 3D visualizations of the microstructural evolution of 7055 aluminum alloys during the HPS process were conducted.

 — Abstract The W–La2O3–Y2O3–ZrO2 materials were prepared by vacuum hot pressing sintering process. The microstructure was characterized by scanning electron microscopy (SEM). The effects of sintering temperature, sintering pressure, holding time and heating rate on relative density, hardness and microstructure were studied. The …

 — The sintering process can be defined as a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, ... Additionally, different alternatives to the sintering and pelletizing techniques are described: HPS process, hybrid pelletized sinter; MEBIOS, mosaic embedding iron ore sintering; and, CAP ...

 — Owing to the process characteristics of solid-state synthesis, hot press sintering (HPS) has become the preferred process for HEA fabrication [[13], [14], [15]]. Sakar E et al. optimized the hot-pressing sintering process to endow it with advantages such as a wide processing range, high raw material utilization, and low production costs …

 — Spark plasma sintering (SPS), also called pulsed electric current sintering (PECS) or field-assisted sintering technique (FAST) is a technique for sintering powder under moderate uniaxial...

 — The HPS process involves distinct stages: cold compaction, hot compaction, and isothermal progression. During cold compaction, densification is driven by the …

 — During the holding period at sintering temperature, the resistance of the system was virtually constant during all experiments. In order to realise a constant input of heat, i.e. to hold the sintering temperature, according to Joule's law the total current (I t o t a l in Figure 11) flowing through the system has to be constant, too.

Hence, compared to the conventional sintering process, the HPS process is capable of producing lower SiO 2 sinter of good strength due to the formation of solid diffusion bonding during sintering. Decreasing the sinter SiO 2 content is important for high pulverized coal injection (PCI) operation of blast furnaces.

Spark plasma sintering has also been applied for fabrication of extra hard/high wear resistance materials for cutting, aspheric glass-lens mould, sandblasting nozzles and extruding machine screws; and is a popular technique for the fabrication of FGMs, intermetallic compounds, fibre reinforced ceramic matrix composite (FR-CMCs), MMCs …