(n.) A mineral occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky-brown varieties from Ceylon are called jargon.
Example Sentences:
(1) Modern ultrasonic transducers mainly employ lead zirconate titanate (PZT) but vinylidene fluoride trifluoroethylene copolymer (P (VDF-TrPE)) is becoming more competitive.
(2) The application of zircon (ZrSiO4) that has high refractoriness, high thermal conductivity and a low coefficient of thermal expansion, to quick casting investment was studied.
(3) Disk-shaped implants of spinel, alumina, mullite, zircon, a cast Co-Cr-Mo alloy, and ultra-high molecular weight polyethylene (UHMWPE), were implanted in the paraspinalis muscle of 12 adult, male, white New Zealand rabbits.
(4) Some samples of red mud, phosphogypsum, zircon products and fly ash did show higher levels of radioactivity than would be acceptable on the basis of a criterion formula for gamma-ray activity suggested for use in some OECD countries.
(5) An Ontario plant with 101 workers, producing and using the ceramic compound lead titanate zirconate (LTZ), was investigated.
(6) The acoustic emission from cavitation in the field of an extracorporeal shock wave lithotripter has been studied using a lead zirconate titanate piezoceramic (PC4) hydrophone in the form of a 100-mm diameter focused bowl of 120-mm focal length.
(7) Further heating changed surface structure and led to zircon production in the zirconia fibres.
(8) 2) Dainainvest (Ohara) mainly containing zircon indicated the reduction in surface roughness due to coating.
(9) Small casting of pure titanium and K-metal could be done successfully by the quick casting method using the zircon-phosphoric acid investments.
(10) Results were as follows: 1) The refractory compositions of seven commercialized coating materials were composed of alpha-quartz (SiO2), zircon (ZrSiO4) and zirconium oxide (ZrO2).
(11) The transducer usually consists of a piezoelectric crystal composed of such ceramic materials as barium titanate, lead titanate, zirconate, or lead metaniobate.
(12) Working processes using zircon sand in a factory producing refractory material were studied from the point of view of radiation protection.
(13) Zircon sand contains high concentrations of natural radionuclides and is a typical example of an enhanced source.
(14) Although zircon was slightly observed on the cast surface, the product of reaction was not detected.
(15) Formulation of zircon slurry for coating was zircon flower #600 30%, zircon flower #350 10%, and zircon sand CP 60%, and that for sanding was zircon flower #200.
(16) Immediately after coating with zircon slurry, the coating layer was dried, sintered and dewaxed by thermal shock.
(17) A new family of materials consisting of lead lanthanium zirconate titanate (PLZT) has evolved from recent advances in ferroelectric ceramics.
(18) We used a flat or focused, 10 mm diameter transducer made of lead zirconate-titanate with a resonant frequency of 2 or 3 MHz at a repetition rate of 3.6 kHz.
(19) 3) Liquid investment (Nobilium) and Paint investment (Shofu) having about equal amounts of alpha-quartz and zircon showed as reduction in surface roughness as Dainainvest.
(20) Various zircon powders and phosphoric acid solutions were tested with respect to the higher thermal shock resistance.
Zirconoid
Definition:
(n.) A double eight-sided pyramid, a form common with tetragonal crystals; -- so called because this form often occurs in crystals of zircon.