What's the difference between zircon and zircona?

Zircon


Definition:

  • (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.

Zircona


Definition:

  • (n.) Zirconia.

Example Sentences:

Words possibly related to "zircona"