Effect of sintering atmosphere on properties of porous stainless steel for biomedical applications

Dudek, A.; Włodarczyk, Renata

doi:10.1016/j.msec.2012.09.010

Cited by 29 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3. Figure shows a typical curves (volume vs. pressure curve) of a porous material with a hysteresis loop that is typical for spherical pores (Sintered Graphite) [15,[16][17][18]. The curves obtained for Toray Teflon and Graphite Grade, indicates that the pore shape are plate.…”

Section: Resultsmentioning

confidence: 99%

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Włodarczyk¹

2015

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

The porosity, distribution of pores, shape of pores and specific surface area of carbon materials were investigated. The study of sintered graphite and commercial carbon materials used in low-temperature fuel cells (Graphite Grade FU, Toray Teflon Treated) was compared. The study covered measurements of density, microstructural examinations and wettability (contact angle) of carbon materials. The main criterion adopted for choosing a particular material for components of fuel cells is their corrosion resistance under operating conditions of hydrogen fuel cells. In order to determine resistance to corrosion in the environment of operation of fuel cells, potentiokinetic curves were registered for synthetic solution 0.1M H 2 SO 4 + 2 ppmF − at 80• C. Keywords: fuel cell, bipolar plates, corrosion resistance, porosity, carbon materials W ramach niniejszej pracy badano porowatość, rozkład porów, kształt porów i powierzchnia właściwa materiałów węglo-wych. Badania dotyczyły spiekanego grafitu i materiałów komercyjnych wykorzystywanych do budowy ogniw niskotemperaturowych (Graphite Grade FU, Toray Teflon Treated).W pracy zamieszczono wyniki badań dotyczące pomiarów gęstości, mikrostruktury i zwilżalności (kąt zwilżania) materiałów węglowych. Głównym kryterium wskazującym wybór konkretnego materiału do elementów ogniw paliwowych jest ich odporność na korozję w warunkach pracy wodorowego ogniwa paliwowego. W celu określenia odporności na korozję w środowisku pracy ogniw paliwowych, zarejestrowano krzywe potentiokinetic w roztworze 0,1 M H2SO4 + 2 ppmF-w 80• C.

show abstract

Section: Resultsmentioning

confidence: 99%

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Włodarczyk¹

2015

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

show abstract

“…Sintering does not occur as deeply as in the air and nitrogen atmospheres, because hydrogen as the most effective reducing atmosphere allows for enhanced oxide removal, which necessitates longer sintering times. Furthermore, the small hydrogen atoms may diffuse into the metal lattice, leading to a puffy structure on the particle surfaces and inhibiting the elimination of final porosity, as shown in the Figure 2 [24]. Nevertheless, the dependence of the porosity with the H 2 partial pressure in the sintering atmosphere cannot be easily perceived just from the SEM image alone.…”

Section: Resultsmentioning

confidence: 99%

Sintering of the Immersion-Induced Porous Stainless Steel Hollow Fiber Membranes

Song²,

Tan³

2015

J Membra Sci Technol

View full text Add to dashboard Cite

gas permeability due to the low surface porosity despite their apparent porosities are larger than 40%, indicating the majority of pore volume was closed inside the fiber wall. Actually, the membrane properties like microstructure, surface porosity, pore size distribution and mechanical strength that should be critically considered in practical applications are significantly affected by the sintering conditions in the preparation of inorganic membranes [19]. For example, sintering of the PSS hollow fibres under air, CO 2 , He and H 2 atmospheres would lead to different microstructures [20]. However, the general evolution of microstructure and performance of the resultant PSS hollow fibers with the variation of sintering conditions has not been much clarified. The objective of this work was to elucidate the effects of sintering parameters including atmosphere, temperature and dwelling time on the microstructure and properties of the PSS hollow fibers spun by the phase inversion-sintering technique, and to identify the optimal sintering conditions at which high performance PSS hollow fiber membranes can be achieved.

show abstract

“…Figure 6 The highest activity NT-Air was possibly caused by the smallest particle size, and special surface composition. Particle size of semiconductor photocatalyst impacted photocatalytic reactions heavily, especially in liquid, and were influenced by the environment of crystal growth [33][34][35]. The smallest particle size was usually helpful to photocatalytic reaction.…”

Section: Page 5 Of 20mentioning

confidence: 99%

“…Recently, NaTaO 3 with different crystalline structures also showed different activities [14]. The atmosphere in preparation could affect the surface of sample, especially oxidization and reduction atmosphere [33][34][35]. In the previous reports, all the samples were synthesized in air atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of NaTaO3:La prepared under different atmospheres

Zhang

et al. 2014

Applied Surface Science

View full text Add to dashboard Cite

Effect of sintering atmosphere on properties of porous stainless steel for biomedical applications

Cited by 29 publications

References 8 publications

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Sintering of the Immersion-Induced Porous Stainless Steel Hollow Fiber Membranes

Photocatalytic activity of NaTaO3:La prepared under different atmospheres

Contact Info

Product

Resources

About