Thermodynamics and microstructure of Ti–ZrO2 metal–ceramic functionally graded materials

Teng, Lidong; Wang, F.M; Li, W.C

doi:10.1016/s0921-5093(00)01045-5

Cited by 43 publications

(22 citation statements)

References 10 publications

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“…The small difference was observed for the temperature of 550°C (a * 8.2 9 10 -6 K -1 ) which could correlate with the beginning of the titanium oxide changes [26,27]. At …”

Section: Materials Characterizationmentioning

confidence: 85%

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Sintering behavior and thermal expansion of zirconia–titanium composites

Łada

Miazga

Konopka

et al. 2017

J Therm Anal Calorim

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The dilatometric and thermogravimetric methods were used to investigate the sintering conditions of 3Y-ZrO 2 and 3Y-ZrO 2 -Ti composites. For the materials preparation, the nanometric zirconia stabilized by 3 mol% Y 2 O 3 powder and micrometric titanium powder (3 and 10 vol%) were used. The green body samples were formed by slip casting method. The morphology of samples microstructures was determined by SEM observations. The stereological analysis of zirconia and zirconia-titanium composites was carried out using computer program. The density was measured using the Archimedes method. The hardness of sinters was also investigated. Addition of Ti into ZrO 2 influenced the sintering behavior and thermal expansion of obtained composites. The analysis of the sintering process and characteristic temperatures confirmed the increase of onset and final temperature of shrinkage with the increase in Ti content. The changes of the thermal expansion curves for the pure zirconia and 3Y-ZrO 2 -Ti composites were the result of the aTi ? bTi transformation and the transition temperature of the zirconia m ? t transformation. The zirconia and composite samples were characterized by relative density about 98%, close to theoretical density. The slight growth of zirconia grains was observed.

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“…The small difference was observed for the temperature of 550°C (a * 8.2 9 10 -6 K -1 ) which could correlate with the beginning of the titanium oxide changes [26,27]. At …”

Section: Materials Characterizationmentioning

confidence: 85%

“…At 650°C, the small decrease in the thermal expansion coefficient was observed (about -2.5 9 10 -6 K -1 ). This range of temperature could correspond with the titanium oxides transformation [26,27]. At the second temperature point (below 1000°C), the thermal expansion coefficient was higher, about 10 9 10 -6 K -1 .…”

Section: Materials Characterizationmentioning

confidence: 86%

Sintering behavior and thermal expansion of zirconia–titanium composites

Łada

Miazga

Konopka

et al. 2017

J Therm Anal Calorim

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“…For the best properties ZrO 2 is additionally stabilized with a small content (3 mol%) yttrium oxide. This material has excellent resistance to thermal shock, corrosion resistance, high wear resistance, high strength and higher fracture toughness than many other ceramic materials [8][9][10]. Titanium is a metal characterized by a high strength relative to weight ratio, excellent corrosion resistance and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

“…Titanium is used in many areas of advanced technology: aerospace, medicine and chemical industry. However, due to limitations resulting from low wear resistance titanium involves many complex processes [9][10][11]. The combination of both of these materials allows the formation of a composite with or improved properties and wide use even as thermal barriers.…”

Section: Introductionmentioning

confidence: 99%

“…The combination of both of these materials allows the formation of a composite with or improved properties and wide use even as thermal barriers. Despite to the used of couple ZrO 2 -Ti will be limited to the properties temperature behavior of metal, the mechanical properties like fracture toughness of zirconia matrix with titanium particle may increase [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of ZrO2-Ti Composites by Slip Casting Method

Łada¹,

Falkowski²,

Miazga³

et al. 2016

Archives of Metallurgy and Materials

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Slip casting is one of the most popular shaping method in ceramic technology which allows producing a large number of elements in small period of time. This shaping technique gives a possibility to fabricate ceramic or composite materials such as ZrO 2 -Ti. Ti with its properties (low density, high melting point, high-temperature strength, good corrosion resistance and others) combine with ZrO 2 (high flexure strength, high compression resistance and very high K IC ) can be considered for different applications as constructional and functional materials. For the preparation of such composite nanometric zirconium oxide powder stabilized by 3 mol% Y 2 O 3 and micrometric titanium powder were used. Water-based slurries with 35, 40, 45 and 50 vol.% solid phase content were prepared with 3, 10 and 15 vol.% addition of titanium powder. Zeta potential and pH of prepared slurries were considered. The pH changes were tested as a function of Ti content. The viscosity of the prepared slurries was measured. The sedimentation tests for selected slurries were performed. The casting rate for slurry of 35% solid phase with 10 vol.% Ti was examined. These measurements showed good stability of slurries. With the increasing of the solid phase concentration the density of the green bodies increased. However, the increase of the content of Ti powder reduced the density of green body samples. For selected samples the SEM observations was carried out. Composites produced by slip casting were characterized by a homogenous distribution of Ti particles in the ZrO 2 matrix.

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