Microstructure, surface topography and mechanical properties of slip cast and powder injection moulded microspecimens made of zirconia

2003 ◽  
Vol 94 (5) ◽  
pp. 599-605 ◽  
Author(s):  
M. Auhorn ◽  
B. Kasanická ◽  
T. Beck ◽  
V. Schulze ◽  
D. Löhe
Keyword(s):  
Mechanical Properties ◽  
Surface Topography ◽  
Powder Injection ◽  
Slip Cast

Analysis of Residual Stresses in Micro Powder Injection Moulded Micro Bending Specimens Made of Zirconia

2005 ◽  
Vol 490-491 ◽  
pp. 503-508 ◽  
Author(s):  
B. Kasanická ◽  
Thomas Wroblewski ◽  
Volker Schulze ◽  
Detlef Löhe
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Electron Microscope ◽  
Residual Stresses ◽  
Surface Topography ◽  
Powder Injection ◽  
Residual Stress State ◽  
Powder Injection Moulding ◽  
Sintering Conditions ◽  
Scanning Electron

Analysis of the residual stress state, the microstructure and surface topography of ceramic microcomponents made of Y2O3-stabilized ZrO2 produced by micro powder injection moulding were performed. During the production of the microspecimens sintering conditions were varied. The measurement of residual stresses has been carried out using the MAXIM (MAterials XRay IMaging) diffractometer at HASYLAB beamline G3 at DESY in Hamburg (Germany). The microstructure and surface topography of differently moulded specimens were examined using a scanning electron microscope (SEM) and a confocal white light microscope type NANOFOCUS. The findings are used to establish correlations between process parameters and characteristics of the microcomponents. These will allow to improve the production process with respect to the mechanical properties of the microcomponents.

Microstructure, phase compositions and mechanical properties of slip cast sintered SiC/Si3N4 composites

2021 ◽  
Author(s):  
Shohreh Shahrestani ◽  
Mokhtar Che Ismail ◽  
Saeid Kakooei ◽  
Mohammadali Beheshti
Keyword(s):  
Mechanical Properties ◽  
Slip Cast

Microstructure, Hardness, and Wear Resistance of Powder-Injection-Molded Products of Fe-Based Metamorphic Powders

2007 ◽  
Vol 26-28 ◽  
pp. 355-358
Author(s):  
Chang Kyu Kim ◽  
Chang Young Son ◽  
Dae Jin Ha ◽  
Tae Sik Yoon ◽  
Sung Hak Lee
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Injection Molding ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Thermally Stable ◽  
Austenitic Matrix ◽  
Amorphous Phases ◽  
Injection Molded

Powder injection molding (PIM) process was applied to Fe-based metamorphic alloy powders, and microstructure, hardness, and wear resistance of the PIM products were analyzed and compared with those of conventional PIM stainless steel products. When Fe-based metamorphic powders were injection-molded and then sintered at 1200 oC, completely densified products with almost no pores were obtained. They contained 34 vol.% of (Cr,Fe)2B borides dispersed in the austenitic matrix without amorphous phases. Since these (Cr,Fe)2B borides were very hard and thermally stable, hardness, and wear resistance of the PIM products of Fe-based metamorphic powders were twice as high as those of conventional PIM stainless steel products. Such property improvement suggested new applicability of the PIM products of Fe-based metamorphic powders to structures and parts requiring excellent mechanical properties.

scholarly journals Dense lanthanum silicate oxyapatite ceramics obtained by uniaxial pressing and slip casting

2018 ◽  
Vol 50 (4) ◽  
pp. 433-443
Author(s):  
Ramiro Toja ◽  
Nicolás Rendtorffa ◽  
Esteban Agliettia ◽  
Tetsuo Uchikoshi ◽  
Yoshio Sakka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vickers Hardness ◽  
Growth Process ◽  
Slip Casting ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
Slip Cast ◽  
Lanthanum Silicate

Lanthanum silicate oxyapatite (LSO) is a promising ion conductive ceramic material, which has higher oxygen ion conductivity at intermediate temperatures (600-800?C) compared to yttria-stabilized zirconia. Its mechanical properties, though important for any of its applications, have been scarcely reported. In this study, we compare apparent densification, open porosity and Vickers hardness of samples conformed by uniaxial pressing and slip casting and fired up to 1600?C. Colloidal processing was optimized for slip casting in order to get high green densities. At sintering temperatures higher than 1400?C, both processing routes yielded comparable densities, although uniaxially pressed samples show slightly better mechanical properties, evidencing that slip cast ones already underwent a grain growth process.

scholarly journals Ageing of Zirconia Dedicated to Dental Prostheses for Bruxers Part 1: Influence of Accelerating Ageing for Surface Topography and Mechanical Properties

2019 ◽  
Vol 58 (1) ◽  
pp. 189-194 ◽  
Author(s):  
Damian S. Nakonieczny ◽  
Marcin Basiaga ◽  
Agata Sambok ◽  
Magdalena Antonowicz ◽  
Zbigniew K. Paszenda ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Surface Topography ◽  
Ageing Time ◽  
Accelerated Aging ◽  
Technical Requirements ◽  
Dental Prostheses ◽  
Ceramic Restorations ◽  
Dental Technology ◽  
Medical Grade

Abstract BACKGROUND: Zirconia is a commonly used ceramic for fixed full-ceramic restorations. Porcelain-fused-to-metal restorations applied for bruxers are often very quickly destroyed by this group of patients. OBJECTIVE: The aim of this study was to investigate the influence of accelerated aging tests on BruxZir HT 2.0 zirconia. METHODS: Zirconia samples were prepared with ISO 13356:2013 and ISO 14704:2008 protocol recommendations. The ageing conditions were times of 2.5, 5 and 10 hours, and pressure of 0.2 MPa and a temperature of 134°C. RESULTS: The correlation between ageing time and mechanical properties, particularly hardness, was difficult to find, while correlations between hardness and the surface topography and fracturing were clear. CONCLUSION: On the basis of the conducted research, it can be stated that BruxZir HT 2.0 zirconia meets the technical requirements for medical grade zirconia used in dental technology. Future investigations should include phase composition research.

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