A number of processing steps in ceramic manufacturing result in the emission of hazardous air pollutants (HAPs) such as acid gases (e.g., hydrofluoric acid, HF; and hydrochloric acid, HCl) that are released in the high-temperature firing steps of the manufacturing process.
During firing, a glaze applied on a ceramic body undergoes several transformations, including water loss from the clay components, glass transition and softening. During the softening phase, the glaze starts to melt, giving rise to a continuous liquid layer.
Happy Valentine's Day! In the best romantic relationships, two often dissimilar partners join together to create a new, singular unit. Likewise, a finished ceramic tile generally incorporates a fired ceramic body and a glaze to create a product of beauty and utility. Unfortunately, not all relationships are a match made in heaven.
Measuring the elastic properties of a green ceramic as it is being fired can be difficult and often requires sophisticated non-destructive testing (NDT) techniques. One effective method is called the the impulse excitation technique (IET).
Acoustic micro-imaging tools perform the non-destructive imaging and analysis of internal features (including anomalies and defects) in advanced ceramics and other materials by pulsing ultrasound into the sample and receiving the return echoes.
Shedding light on the molecule-ion interplay on the surface of an organic-inorganic perovskite crystal could help improve future solar cells.
February 1, 2016
Organic-inorganic perovskite materials are key components of the new generation of solar cells. Understanding the properties of these materials is important for improving the lifetime and quality of solar cells.