Results 161 to 170 of about 24,721 (208)

Nanomechanical characterization of RB-SiC ceramics based on nanoindentation and modelling of the ground surface roughness

Ceramics International, 2020
Abstract Reaction bonded silicon carbide (RB-SiC) ceramics are the primary structure and mold materials for the optical industry and mostly are machined by means of ultra-precision grinding to achieve a satisfactory surface quality. However, it is not easy to attain the theoretical prediction of surface quality, particularly surface roughness ...
Zhenzhong Zhang, Peng Yao, Jun Wang, Chuanzhen Huang, Hongtao Zhu, Hanlian Liu, Bin Zou   +6 more
openaire   +1 more source

Measurement of elemental composition of carbon and composite ceramic materials using PIXE and RBS methods

Inorganic Materials: Applied Research, 2012
With the help of the PIXE and RBS methods, the elemental composition of a ceramic coating on Zr alloy, surface layers of heat-treated TiNi alloy, and Ar+ implanted pyrolytic graphite is investigated. It is shown that the PIXE and RBS methods are complementary and their combined use can provide additional information on the elemental composition of the ...
V. S. Avilkina, A. M. Borisov, B. V. Vladimirov, V. P. Petukhov, P. N. Chernykh   +4 more
openaire   +1 more source

High piezoelectric response and excellent fatigue resistance in Rb-substituted BNT–BKT–BT ceramics

Journal of Materials Science, 2020
Lead-free piezoelectric ceramics featuring high piezoelectricity and fatigue resistance are extremely important in practical applications. In this work, 0.85Bi0.5Na0.5TiO3–0.11Bi0.5K0.5−xRbxTiO3–0.04BaTiO3 (x = 0–0.20) ceramics are developed, and the effects of Rb content on the crystalline phase, domain structure, electric property, and fatigue ...
Xuefan Zhou, Xi Yuan, Zhongna Yan, Guoliang Xue, Hang Luo, Dou Zhang   +5 more
openaire   +1 more source

Surface strengthening of lithium disilicate glass-ceramic by ion-exchange using Rb, Cs nitrates

Ceramics International, 2018
Abstract In order to further improve the flexural strength of lithium disilicate glass-ceramic, surface strengthening by ion exchange using Rb, Cs nitrates has been studied for the first time. The influences of ion exchange using rubidium and cesium salts on the flexural strength and corrosion resistance have been investigated.
Zhengjie Shan, Jingxiao Liu, Ming Liu, Fei Shi, Chengtie Wu, Chengyu Wang, Tianshuang Liu   +6 more
openaire   +1 more source

Effect of Different Dielectric Fluids on Micro EDM of Low Conductivity Ceramic Material RB-SiC

Advanced Materials Research, 2012
The machining characteristics of reaction bonded silicon carbide (RB-SiC) in micro electrical discharge machining process were studied by using EDM oil, deionized water, and graphite fiber mixed EDM oil as the dielectric fluids. The process performances were measured in terms of material removal rate, surface roughness and surface topography.
Pay Jun Liew, Ji Wang Yan, Takeshi Masaki, Tunemoto Kuriyagawa   +3 more
openaire   +1 more source

Successive phase transitions in Rb₂TeO₄ceramics

Ferroelectrics, 1999
Abstract Polycrystalline samples of Rb2TeO4 have been prepared by a conventional solid-state reaction technique at a low temperature (600°C). Preliminary room temperature X-ray studies suggest the formation of the single phase compound of Rb2TeO4 with cell parameters a = 10.582(1) A, b = 8.448(1) A and c = 8.499(1) A in the orthorhombic crystal system.
S. Sharma, R. N. P. Choudhary, S. R. Shannigrahi   +2 more
openaire   +1 more source

Effect of Rb substitution on dielectric, ferroelectric, mechanical and biocompatibility properties of Na0.2K0.3Bi0.5TiO3 ceramics

Materials Chemistry and Physics
This study focuses on the strategically developed Rb-substituted lead-free Na0.2K0.3Bi0.5TiO3 (NKBT) ceramic, highlighting its applications in energy storage, bio-implants, actuators, dielectric capacitors, and various other fields. The significant decrement of average grain size of ?0.31 ?m from ?0.62 ?m has been observed via surface morphology ...
Ranjan Kumar Sahu, Sajmina Khatun, Aravind Kumar Rengan, Saket Asthana   +3 more
openaire   +2 more sources

C Fiber Reinforced Ceramic Matrix Composites by a Combination of CVI, PIP and RB

2006
Continuous fiber-reinforced SiC matrix composites present excellent properties particularly as high temperature lightweight structural materials. Nevertheless widespread application of this class of materials is presently hindered mainly due to the very expensive production processes.
D. A. de Pinto, A. Borello, LICCIULLI, ANTONIO ALESSANDRO, C. A. Nannetti, A. Ortona   +4 more
openaire   +1 more source

Investigation of Rb substitution on the thermoelectric parameters of BSCO Ceramic Materials

2019
Bu çalışma, güvenilirlik, sürdürülebilirlik vetemiz enerji gibi günümüzün ana temalarını adres gösterecektir. Bu amaçiçin,  katı-hal tekniğiyle Bi2Sr2-xRbxCo2Oy(x=0.0, 0.025, 0.050, 0.075, 0.100 ve 0.125) malzemeleri üretilmiştir. Özdirençgrafiğinden, saf ve 0.025Rb örnekleri yarıiletken bir davranış (dρ/dt<0),diğerlerinin ise metalik bir ...
ÖZÇELİK, Bekir, ÇETİN, Gizem, SOTELO, Andres, MADRE, Maria   +3 more
openaire   +1 more source

RBS Simulation of Integrated Piezo-Ceramic Actuation for Textile Reinforced Composite Compliant Mechanisms

2011
Structure-integrated drives use compliant elements to transmit motion just by structural deformations, and also, integrate piezo-ceramic actuators into the composite’s laminate lay-up to command and control the motion. The transmission of motion sequences can be obtained with reduced number of parts and low structural weight. However, the actual motion
N. Modler, K.-H. Modler, W. Hufenbach, D. Margineanu, E.-C. Lovasz, D. Perju, Ev. Ianosi   +6 more
openaire   +1 more source