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The transformation of Zirconia from tetragonal to monoclinic is large around 5%. It results in limiting its elasticity and fracture and formation of cracks in zirconia ceramics. Zirconia is mixed with calcium oxide (CaO), magnesia (MgO), or yttria (Y2O3) to stabilize in tetragonal or cubic phase. Partially Stabilized Zirconia (PSZ) consists of cubic, tetragonal, including monoclinic phases of zirconia. Tetragonal zirconia polycrystals (TZP) are the purest form of the tetragonal phase compared with other phases. PSZ and TZP are considered for fabrication of the biomedical device and scaffolds. Tables 1.7 and 1.8 summarize the mechanical properties of zirconia ceramics. The strength and fracture toughness of Yttria-TZP ceramics is quite considerable and almost twice that of alumina. Therefore, zirconia heads are less susceptible to the stress when contacting with metal cones. Nowadays most medical-grade zirconia from PSZ tetragonal zirconia is considered for medical device development. It shows minimal microhardness and elastic modulus, good strength, and fracture toughness than that of alumina. Developing ceramic ball heads below 32 mm is possible from Zirconia as it has superior mechanical strength.

Products Description Metal Halide - By adding other elements/additives such as iron, lead, gallium, indium, etc. to the lamp tube, we can make a range of metal halide lamps. These additives alter the wavelength composition of the UV output of the lamp, making it suitable for deep UV curing of ultra-thick coatings. According to this characteristic, Yuyu metal halide lamps are widely used in PCB, wood-based coating, electronic product coating, optical fiber manufacturing, etc. Lamp Parameter Power output 7KW Wavelength 365nm Arc length 780mm Material High Quality Quartz Tube End caps Ceramic / metal Service life 800 to 1000 hour 1. High Quality Quartz Tubing High temperature resistance,slow UV attenuation, UV light transmittance up to 99%,and long lamp life. 2. High Quality Ceramic Lamp Base Made of high-quality ceramic materials, resistant to high temperatures and not easy to age.