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Glass-ceramic from the LAS system is a mechanically strong material and can sustain repeated and quick temperature changes up to 800–1000 °C. The dominant crystalline phase of the LAS glass-ceramics, HQ s.s., has a strong negative coefficient of thermal expansion (CTE), keatite-solid solution as still a negative CTE but much higher than HQ s ...
When sufficient sintering has taken place, the ceramic body will no longer break down in water; additional sintering can reduce the porosity of the ceramic, increase the bond area between ceramic particles, and increase the material strength. [5] Industrial procedures to create ceramic objects via sintering of powders generally include: [6]
Lead oxide is the traditional low temperature flux used for crystal glass, but it is now avoided because it is toxic even in small quantities. It is being replaced by other substances, especially boron and zinc oxides. [3] In clay bodies a flux creates a limited and controlled amount of glass, which works to cement crystalline phases together.
Photonic curing of a printed nanosilver trace on PET.. Photonic curing is the high-temperature thermal processing of a thin film using pulsed light from a flashlamp. [1] When this transient processing is done on a low-temperature substrate such as plastic or paper, it is possible to attain a significantly higher temperature than the substrate [2] can ordinarily withstand under an equilibrium ...
A high strength glass-ceramic cook-top with negligible thermal expansion. Glass-ceramic materials share many properties with both glasses and ceramics. Glass-ceramics have an amorphous phase and one or more crystalline phases and are produced by a so-called "controlled crystallization", which is typically avoided in glass manufacturing.
Raj and his students first published a work on flash sintering in the Journal of the American Ceramic Society where they showed that yttrium-stabilized zirconia can be sintered in a few seconds at a furnace temperature of ~850 °C to full density. The advantage of this technique over other sintering techniques is the short time to achieve full ...
Frit. A frit is a ceramic composition that has been fused, quenched, and granulated.Frits form an important part of the batches used in compounding enamels and ceramic glazes; the purpose of this pre-fusion is to render any soluble and/or toxic components insoluble by causing them to combine with silica and other added oxides. [1]
He contributed greatly to methods for processing ceramics, particularly sintering, a method for creating objects out of powders by heating them until they bond. [5] He wrote a series of books on ceramics, culminating in Introduction to Ceramics, a book that became the "founding treatise" for ceramics. [6] Kingery became a full professor in 1962.