Please do as many as you can but don\'t only do one paper. Explanation is not ne
ID: 1767314 • Letter: P
Question
Please do as many as you can but don't only do one paper. Explanation is not necessary I only need answers.
Thank you
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Please do as many as you can but don't only do one paper. Explanation is not necessary I only need answers.
Thank you
Report numerical answers to the specified number of significant figures and units. Leave a single space in between the numerical answer and the units. Also, leave a single space in between answers that include more than one word. DO NOT include any commas within the numerical values or in between answers with multiple words. Include a 0 before the decimal point for values less than one. Include units throughout your calculations 1. The two characteristics of component ions that determine the crystal structure of a ceramic compound are: (1) the magnitude of the ( electrical/ quantum) charge on each ion, and (2) the relative ( bonds /sizes ) of the cations and anions. 4 2. Hardness of ceramic materials is difficult to measure because of their ( ductility/ brittleness ) and susceptibility to cracking when indented. 2 3. (Refractory / Brittle ) ceramics have the capacity to withstand high ( loads/ temperatures) without melting or decomposing and the capacity to remain unreactive and inert when exposed to severe environments. 4 4. For ceramic materials, microcracks result in amplification of applied (compressive/ tensile ) stresses and account for relatively low fracture (strengths/ hardness ) 4 5. Stress amplification does not occur with (shear/ compressive) loads; and subsequently ceramics are stronger under this type of load. 2 6. The principal constituents found in Portland (cement/ ceramics ) are tricalcium silicate and dicalcium silicate. It is used primarily in mortar and (plastics/ concrete) to bind aggregates of inert particles into a cohesive mass 4 7. A cation vacancy cation interstitial pair is known as a ( Pascal/ Frenkel ) defect. 2 8. (Carbon/Copper) (molecules/ nanotubes) have unique and structure-sensitive electrical characteristics and are currently being used as reinforcements in polymer-matrix nanocomposites to improve not only mechanical strength, but also thermal and electrical properties 4Explanation / Answer
1)The two characters of components of ions that determine the crystal structure of a ceramic compound is 1) the magnitude of the electrical charge on each ion, and (2) the relative sizes of the cations and anions.
2) The hardness of a ceramic material is difficult to measure because of their brittleness and susceptibility to crack.
3) Refractory ceramics have the capacity to withstand high temperatures without decomposing to environmental conditions.
4) for a ceramic material micro cracks result in amplification of tensile stresses and result in low fracture strength.
5) Stress amplification does not occur with compressive loads and ceramics are strong in compressive loads.
6) The principal constituents found in Portland cement are tricalcium silicate and dicalcium silicate. They are mainly used in mortar and concrete.
7) A cation vacancy- Cation Interstitial is known as Frankel defect.
8) Carbon Nanotubes have unique and structural- sensitive electrical characteristics. They are used as reinforcement in composites.
First four ansered.