JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ was upset to find a big hard lump. Explain to JJ what happened.
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11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the
furnace, JJ was upset to find a big hard lump. Explain to JJ what happened.
b) After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments.
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- .24. The surface of a forging made from a 4340 steel is unexpectedly subjected to a quench rate of 100°C/s (at 700°C). The forging is specified to have a hardness between Rockwell C46 and C48. Is the forging within specifications? Briefly explain your answer.JUST PART B PLEASE! 11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ was upset to find a big hard lump. Explain to JJ what happened. b) After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments.Think that an alloy Cu-60wt%Ag is slowly cooled from the Liquid Phase Field. How many grams of total alpha are present at 778°C? The total alloy amount is 1000grams
- Describe the advantages and limitations for each of the following applications : 1) Deposition of metal onto a polymer 2) Deposition of coatings onto a piece with a complex shape. 3) Deposition if ceramic coatings with a very high melting point 4) Rapidity of deposition20212 -202 A blast furnace makes pig iron containing 3.2% and 1.8% of Carbon and Silicon and remaining as Iron respectively. The ore is a combination of 80%, 12% and 8% of Iron Oxide, Silica and Aluminum Oxide respectively. The process requires coke at a rate of 1 Kg per kg of pig iron produced. The coke is adulterated with Silica with 10% of silica and remaining to be carbon. The flux is obtained at a rate of 0.4 kg per kg of pig iron and is the base of one tonne of pig iron containing pure Calcium carbonate. The blast furnace gas has 30% CO and 15% CO2. calculate the following assuming the 1. The weight of core used. 2. The weight of slag made. m504ssary data required: [15] 504-888/7/2024/04/28-202nsidering t 3. The volume of the blast-furnace gas. 4/28-202123am504-88817-20 Produced,2 88817-2024/04Determine whether the first part of statement will INCREASE, DECREASE or HAVE NO EFFECT in the second part of the statement. 1. If there is an increase in volume of a cobalt block then the density will ______. 2. If there is an increase in the difference between the valence of two alloying elements then the degree of solubility will ________. 3. If there is a decrease in the difference between Mw and Mn then its dispersity will ______
- Aluminum is the most abundant metal in the earth’s crust. It is also a common household utensilmetal. The extraction of Aluminum from its ore is expensive because the metallurgy uses a veryhigh amount of electricity. The extraction of Aluminum metal takes place in a number of steps,which may be summarized below.Step 1: Washing and mechanical processes employed to the ore to remove basic impurities.Step 2: Conversion of Aluminum ore (Bauxite) to powdered Alumina (Al2O3) by reaction withconcentrated NaOH solution.Step 3: Dissolving Alumina in molten Cryolite(Na3AlF6)Step 4: Electrolytic refining of the solution at step 2. (Diagram below) to form pure Aluminummetal.Step 5: Collecting pure molten Aluminum at the cathode, which change later to solid Aluminummetal.As you observed, many changes are taking place in different steps for the above extractionprocess. Classify them as physical or chemical change and explain why?a) Step 1 __________________________________________b) Step 2…A steel model was cooled down from 1000°C. a. Find the composition of the steel, if, at 800°C the model contains austenite and ferrite at a ratio of 1:3. b. Calculate the relative amounts of cementite and ferrite at room temperature (X-95.6%).If a ceramic piece is desired that is dense and, in addition, is to experience very little or no grain growth during its processing, which of the following powder pressing techniques should be used? Uniaxial pressing, followed by firing. Isostatic pressing, followed by firing. Hot pressing.
- 4m K R EMetals H X Se.com/u/1/c/MTUAMTYZNTK2OTM3/a/Mig0NjcAMzk0ODA4/delails tals Homework Packet 18.pdf Oper wth UNDERSTANDING ORES Most ores look like ordinary rocks. You would not guess that they contain shiny metal. The earth's crust is made up of many minerals. Minerals can be defined as naturally occuring chemical elements and compounds. People have discovered more than 2,000 different minerals. Many of these contain metals. But because the metal elements are linked with other elements in the minerals, the metals do not show all of their properties. Figure A 1. Most minerals are elements, compounds 2. In order to free the metal from the other elements, a mineral must be synthesized, decomposed Page 3 I 6 Q +What is the composition, in atom percent, of an alloy that consists of 30 wt% Zn and 70 wt% Cu? What is the composition, in weight percent, of an alloy that consists of 6 at% Pb and 94 at% Sn? Calculate the composition, in weight percent, of an alloy that contains 218.0 kg titanium, 14.6 kg aluminum, and 9.7 kg vanadium. What is the composition, in atom percent, of an alloy that contains 98 g tin and 65 g lead? What is the composition, in atom percent, of an alloy that contains 99.7 lbm copper, 102 Ibm zinc, and 2.1 lbm lead?Consider that you need to use one of these casting to produce a widget of uniform high hardness and strength. Which one would you choose? O cold mould on insulated base O insulated mould on cold base O cold mould on cold base O cold mould on cold base with nucleating agent added