High Field Dielectric Properties of EB Irradiated Crosslinked Polyethylene Films in High Temperature Region

Properties of crosslinked ultra-high-molecular-weight polyethylene.

Substantially reducing the rate of generation of wear particles at the surfaces of ultra-high-molecular-weight polyethylene (UHMWPE) orthopedic implant bearing components, in vivo, is widely regarded as one of the most formidable challenges in modern arthroplasty. In the light of this, much research attention has been paid to the myriad of endogenous and exogenous factors that have been postula...

HIGH TEMPERATURE ELASTIC PROPERTIES OF REFRACTORY MATERIALS

Abstract: A pulse-echo technique, based on ultrasonic "long-bar" mode (LBM) velocity measurements, working up to 1700°C is described. Magnetostrictive transducers and ultrasonic lines used in a 40-85 kHz frequency range are detailed. The conditions of choice of fundamental parameters (frequency, line geometry, sample size) are discussed in relation with the nature and the microstructure of ...

High Temperature Microwave Dielectric Properties of Ceramic Nano and Micropowders

The problem of microwave enhanced mass transport in solids remains an area of great interest and continued research in the microwave processing of materials. Many researchers have reported that microwave sintering of materials reduces the time and often the temperature of the sintering procedure [1]. The mechanisms of the mass transport enhancement phenomenon by microwaves termed “Microwave Eff...

Dielectric Study at Microwave Frequencies of Water-treed Crosslinked Polyethylene

The dielectric properties of water-treed crosslinked polyethylene (XLPE) were studied by using a hollow microwave waveguide system between 135 MHz and 13.6 GH5. The dielectric loss of water-treed XLPE is proportional to water content. Water-treed XLPE has a low relaxation frequency which is probably due to bound water. The binding of water in trees was confirmed by the lower apparent water diff...

ZST Dielectric Resonator for Far-Field Passive High Temperature Sensing