Synthesis of highly dense and fine-grained aggregates of mantle composites by vacuum sintering of nano-sized mineral powders

Koizumi, Sanae; Hiraga, Takehiko; Tachibana, Chihiro; Tasaka, Miki; Miyazaki, T.; Kobayashi, Tamio; Takamasa, Asako; Ohashi, Naoki; Sano, Satoru

doi:10.1007/s00269-009-0350-y

Cited by 53 publications

(65 citation statements)

References 16 publications

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“…There is limited study in literature in which olivine is used as a reinforcement agent [9,10]. In this study olivine reinforced PPS composites were prepared with various filling rates, in order to get higher thermal stability, elastic modulus and mechanical properties, which result in better tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Olivine Particle Reinforced Polyphenylene Sulfide Matrix Composites

Şahin

Sınmazçelik

2017

Acta Phys. Pol. A

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Polyphenylene sulfide is a semicrystalline thermoplastic polymer. It offers an excellent balance of properties, including chemical resistance, high temperature resistance, dimensional stability, electrical characteristics and flowability. Polyphenylene sulfide must be filled with reinforced agents, such as fibers and fillers, to overcome its inherent brittleness. Because of its low viscosity, polyphenylene sulfide can be molded with high loading of fillers and reinforcements. These fillers and reinforcements will make a difference in the electrical properties, strength, dimensional stability, surface properties and overall cost. Because of its inherent flame retardancy, polyphenylene sulfide is ideal for high temperature electrical applications. On the other hand, olivine is volcanic based mineral with porous structure, which consists of forsterite (Mg2SiO4) and fayalite (Fe2SiO4). Both, its lower price compared to other minerals and harmlessness to human health increase the usage of olivine from day to day. For this reason olivine reinforced polyphenylene sulfide composite samples were manufactured at various weight ratios (0, 1, 3, 5 and 10 wt.%). Mechanical and scratch properties of samples were investigated and according to test results, it is concluded that olivine mineral can be used as a reinforcing agent material instead of other conventional fillers.

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Section: Introductionmentioning

confidence: 99%

Olivine Particle Reinforced Polyphenylene Sulfide Matrix Composites

Şahin

Sınmazçelik

2017

Acta Phys. Pol. A

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“…In this study, YSZ particles or/and few pores located at intergranular region in samples might be the cause of the pinning force. Koizumi et al (2010) also investigated a method for sintering diopside aggregates from powders of Mg(OH) 2 , SiO 2 and CaCO 3 . In these experiments, highly-dense (~0.1 vol%) and fine-grained (~1.1 µm) diopside was sintered at 1260°C for 2 h by vacuum sintering technique.…”

Section: Resultsmentioning

confidence: 99%

“…The reason for this is not well understood, but might be related to the difference of starting material and the method for powder preparation. Although our sample was not fully dense like Koizumi et al (2010) and some fine pores were still present, we could obtain fine-grained nanocrystalline diopside, preserving original composition of diopside crystal. …”

Section: Resultsmentioning

confidence: 99%

“…In contrast, the latter methods allow exceptional control not only over particle shape and chemical composition, but also over particle size (smaller than a micron). With such well controlled powders, highly dense (porosity <1 vol%) and fine-grained (grainsize of 0.3-1.1 µm) mantle mineral aggregates are successfully synthesized by vacuum sintering technique (e.g., Sano et al, 2006;Koizumi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Sintering nanocrystalline diopside from pulverized diopside crystals

Tsubokawa

Ishikawa

2017

Journal of Mineralogical and Petrological Sciences

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The sintering behavior of diopside nano-sized powder was studied. We successfully fabricated diopside nanosized powders from naturally occurring diopside single crystal (Ca 0.92 Na 0.07 Mn 0.01 Mg 0.93 Fe 0.01 Al 0.06 Si 2 O 6 ). Diopside polycrystalline is sintered from powders with an average particle size of <100 nm under argon flow at temperatures ranging from 1130-1280°C for 0.5-20 h. The average grain size increased with increasing sintering time and sintering temperature while porosity remained nearly constant value of 3-4 vol%. The experimental data of grain growth at 1180°C can be fit for the following equation G 3 − G 0 3 = kt, where G is the grain size after time t, G 0 is the grain size at t = 0, and k is a rate constant.

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“…They observed that the formation of spinel phase strongly improved cold crushing strength of forsterite bodies. However, Koizumi et al [19] showed the sintering result of forsterite phase plus spinel phase.…”

Section: Introductionmentioning

confidence: 97%