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Ceramics and Pottery
Questions concerning the crafting of handmade clay objects are found in this section. The use of paint, clay, kilns, and other dimensions of this fascinating branch of artistry are discussed in this category.
1,992 Questions
Yes, but it depends on the type of clay, the type of glaze, and how high the temperature under which it has been fired. Usually, the higher the temperature, the more vitreous the final product will become, due to the chemical change it undergoes at higher temperatures.
What is the comparison between traditional ceramic and advance ceramic properties?
Traditional ceramics include clay products, silicate glass and cement.Advanced ceramics consist of carbides (SiC), pure oxides (Al2O3), nitrides (Si3N4), non-silicate glasses and many others.
Both are valued for their abrasion resistance, and hence find use in applications such as the wear plates of crushing equipment in mining operations. Advanced ceramics are also used in the medicine, electrical and electronics industries. Advanced ceramics are also referred to as "special," "technical," or
"engineering" ceramics. They exhibit superior mechanical properties,
corrosion/oxidation resistance, or electrical, optical, and/or magnetic properties.
The melting point of ceramics varies depending on the specific type of ceramic material. Generally, ceramics have high melting points ranging from 1400°C to over 3000°C. For example, alumina (aluminum oxide) has a melting point of around 2072°C, while silicon carbide has a melting point of around 2700°C.
What is the difference between ceramic and clay?
Ceramic materials are end products of clays, glass and cements, typically fired at high temperatures of up to 2000 degrees, F. Ceramic materials are hard, porous, and brittle, and can be semiconductors or insulators.
Clay is a natural material comprised of fine-grained minerals that are the result of volcanic and tectonic plate activity and weathering. Clays show plasticity through a variable range of water content. While clays were the traditional source material for ceramics, modern use of the term ceramics includes other mineral sources.
Clay is one source material for some ceramic end products. And not all clays make good ceramics. Clays are defined by their chemical/molecular structures, and are distinct mineral species found in nature. Ceramics are man-made materials used for industrial and consumer products. Ceramics include porcelain, which happens to be made from a white clay called Kaolin.
How do you clean a ceramic knife sharpener?
Quite possibly wrong, but I'm wondering if automotive brake cleaner might work. The residue seems similar and many brake pads are ceramic.
Please try isopropyl alcohol rather than brake fluid first. It should cut it if its a black oily deposit.
If it is iron deposit that has rusted from grinding. Lime-Away or CLR will desolve the rust..
Why does plaster of Paris get hot?
Plaster of Paris is a classic exothermic reaction. The gypsum when heated to 150 degrees dehydrates with 75% of water content escaping as vapor. When water is reintroduced it resets the crystal lattice and gives off heat.
The process is called calcination or lime-burning. This mined from the Wikipedia article on calcium oxide. A link is provided.
What is 'plastic memory and how is it found in clay terms?
THE CLAY PARTICLE
When we look at clay through an electron microscope, the clay
particles seen as a thin hexagonal plate, approximately 100
times longer than it is thick. (Note: Richard Burkett has
placed an image file of clay particles as seen under an electron
microscope in another directory of the Ceramics Gopher at SDSU.)
When we add the water of plasticity to the dry clay, moisture
between the flat plates creates a surface tension attraction so
that the particles do not easily pull apart, but they slide
easily over one another. The flat shape of the clay particle
and the surface tension when water is added gives the strength
and plasticity which we associate with clay in its workable state.
* http://ceramics.sdsu.edu/articles/glaze_tech/basic_clays.html
The glass in a frame. Commonly the window of a house or the glaze.
The word Glaze means any extra surface coating on a thing .....Like doughnut gets a soft sugar glaze ... while a clay pot gets a liquid glaze heated into a Hard glaze.....or the runner had a glaze of sweat on his face...... um Oh yes... glass too is known as glaze so too is the putty used to seal it into its frame....I can only assume they get this odd usage of the word because the glass is an extra coating on the building
Where can clay be found in Trinidad?
Clay can be found in various locations across Trinidad, such as Mayaro, Guayaguayare, and Cumaca. These areas have deposits of various types of clay that are used for pottery making, construction, and other industrial purposes. It is important to obtain permission from landowners before collecting clay from these areas.
What can be used to join plaster of Paris after it has broken?
Plaster of Paris can be joined back together using a mixture of fresh plaster and water. Apply the fresh plaster mixture to the broken edges, press them together, and then smooth out the surface for a seamless repair. Allow it to fully dry and then sand or paint as needed.
Did Carl Larsson ever work as a ceramics painter?
While Carl Larsson was primarily known as a painter and illustrator, he did work briefly as a ceramics painter early in his career. Larsson's ceramic works were influenced by his time in the French village of Grez-sur-Loing where he experimented with different art forms before focusing on painting.
Ceramic crawling is a glaze defect that occurs when the glaze pulls away from the surface of the ceramic during firing, leaving patches where the glaze did not adhere. This can happen due to poor glaze application, dust or oil contamination on the surface, or incompatible materials.
Where can you find a replacement glass bowl for a tart burner?
I have a client who works for the Yankee Candle store (in Tampa, FL). She told me if you go to the Yankee Candle store (mine's at my local shopping mall) and ask for a replacement bowl, they can usually give you one. They get shipments with broken tart burners but the burner bowls are still in tact so they save them. That's what I've done a few times I've broken my Yankee candle tart burner bowls. They're ceramic and they might not match in color to the one you broke, but at least you'll be able to use the tart burner again. If you don't have a local store like that, contact a few online stores that sell tart burners to see if they ever sell replacement bowls. Most don't, but it's worth asking anyway.
How do you explain the strength of ceramics in terms of molecular structure?
This site can explain everything pertaining to the strengths of ceramics, first an excerpt then the site:
Abstract The key features of the processes underlying the failure of ceramics are considered for a wide temperature range. The brittleness and high-temperature plasticity of ceramics are correlated with their crystal chemistry. The general issues related to the strength of ceramics are treated in terms of synergetics, which deals with the spatiotemporal ordering and self-organization in nonequilibrium systems. The strength of ceramics is shown to be governed by its structure on different scales-from atomic to macroscopic. The conclusion is drawn that, in the strict sense, strength is not a property of the material; rather it characterizes its quality.
* http://www.springerlink.com/content/lf6yr4pjf5wmh425/
You excavate historic sites and discover interesting objects like old coins and pottery who are you?
I am an archaeologist who specializes in excavating historic sites to uncover artifacts such as old coins and pottery. My work involves analyzing these objects to learn about the past societies and cultures that once inhabited the area.
Where should you NOT put glaze on a clay pot?
You should not put glaze on the bottom of a clay pot where it will come into direct contact with surfaces when placed down for firing. The glaze could cause the pot to stick to the kiln shelf during firing and result in damage to both the pot and the kiln.
Pottery fragments are broken pieces of pottery or ceramics that have been found at archaeological sites. These fragments can provide valuable information about the culture, technology, and trade of the people who created them. Archaeologists use pottery fragments to date sites and reconstruct ancient pottery-making techniques.
What is the history of clay pots?
Making clay pots began about 10,000 years ago probably in the Middle East. Early pots were made to be thrown away after one use, molded by an imprint of the fist. The first potters wheel is from 8000 to 1400 B.C. and allowed the potter to create even shapes.
Terra cotta (Italian: "baked earth") is a ceramic. Its uses include vessels, water & waste water pipes and surface embellishment in building construction. The term is also used to refer to items made out of this material and to its natural, brownish orange color.
Here are a few sites to help you:
* http://www.jhpottery.com/tutorial/coil.htm * http://pottery.about.com/od/stepbystepprojects/ss/basiccoil.htm* http://www.expertvillage.com/video/16247_base-coil-pot.htm
Did neanderthals invent pottery?
I think the Neanderthals invented "Grooved Ware Pottery" which was found in association with Amud 1 and also at Skara Brae in association with Red Ochre Paint also used by Neanderthal in Burial ceremonies and the evidence is clear that they achieved Neolithic civilization.
Who is antagonist in Monkey's Paw?
The main antagonist in "The Monkey's Paw" is fate or destiny. The consequences of using the monkey's paw to make wishes ultimately lead to tragic outcomes for the characters, suggesting a force beyond their control is at play.
