Mineral Materials I: Ceramics - Powder Processing Methods Quiz

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Why does the high hardness of ceramic materials complicate the preparation of the starting powder?

It causes severe wear and damage during milling. (correct)

It improves the quality of the final product.

It simplifies the shaping process.

It makes the milling process easier.

Which shaping method involves forcing the material through a die to create a specific shape?

Injection moulding

Tape casting

Slip casting

Extrusion (correct)

Which method of powder processing involves the use of organic additives and dispersing mechanisms?

Uniaxial pressing

Agitator ball mill

Spray dryer (correct)

Countercurrent jet mill

What is the purpose of isostatic pressing in powder processing?

To apply pressure from all directions (C) Signup and view all the answers

Why does brittleness facilitate the milling process in ceramic materials?

It helps break the material into smaller particles. (C) Signup and view all the answers

Which milling method involves particles being ground by colliding with each other in a rotating drum?

Scouring mill (A) Signup and view all the answers

What is a key consideration for the rheology of the suspension in direct ink writing (DWI / Robocasting)?

Flowing under low pressure (C) Signup and view all the answers

What is the purpose of the ink preparation in direct ink writing?

To have low viscosity at low shear rates (B) Signup and view all the answers

In ceramic 3D printing using DWI/Robocasting, what is followed after the dry and burn-out stage?

Sintering (A) Signup and view all the answers

What is the primary method employed in three-dimensional printing (3DP) for ceramics?

Direct ink writing (Robocasting) (D) Signup and view all the answers

What characterizes the process of powder-based three-dimensional printing (3DP) according to the text?

Computer-controlled targeted spinning of powder (D) Signup and view all the answers

Which of the following techniques is NOT typically classified as a powder-based method in additive manufacturing?

Fused deposition modeling (FDM) (C) Signup and view all the answers

Which additive manufacturing technique uses a resin-based Slurry for power source?

Digital light processing (DLP) (C) Signup and view all the answers

In which technique is Binder used during the Three-dimensional printing (3DP) process?

Laminated object manufacturing (LOM) (A) Signup and view all the answers

Which additive manufacturing method utilizes Powder fusion in the Laser-based process of sintering/debinding?

Selective laser melting (SLM) (C) Signup and view all the answers

Which technique involves Sheet lamination as part of its manufacturing process?

Solid-based Laminated object manufacturing (LOM) (B) Signup and view all the answers

In which method is Thermal energy used during the Debinding/sintering phase described as Medium speed based?

Fused deposition modeling (FDM) (C) Signup and view all the answers

What is the purpose of adding binders to the sand (SiO2) and water mixture during injection molding?

To provide mechanical stability and enhance particle interactions (D) Signup and view all the answers

What is the significance of controlling the rheology of a ceramic suspension in injection molding?

It allows for the production of complex shapes (B) Signup and view all the answers

Which statement best describes the advantage of injection molding over traditional ceramic processing methods?

It enables the production of components with relatively complex shapes (A) Signup and view all the answers

What is the purpose of the thermal debinding step in the injection molding process described in the text?

To remove residual binders and additives from the molded component (B) Signup and view all the answers

What is a potential challenge associated with injection molding of ceramics?

Accounting for shrinkage during sintering (C) Signup and view all the answers

Which statement best describes the future prospects of additive manufacturing of ceramics, according to the text?

It has a promising future, but further research and development are needed (A) Signup and view all the answers

What is the crucial factor in obtaining final products with good quality in the SLA process?

The homogeneous dispersion of ceramic particles and long-time stability of the suspension (D) Signup and view all the answers

Which factor(s) can make ceramic particles difficult to process using the SLA method?

Greater light absorption and refraction by the ceramic particles (A) Signup and view all the answers

What is the typical activation mechanism for the light-activated polymerization process in SLA?

Scanning of the suspension surface with UV light (D) Signup and view all the answers

Which of the following factors affect the SLA process significantly?

Viscosity, solids content, and light absorption by particles (A) Signup and view all the answers

What is the typical resolution range achievable with the SLA process?

Micrometer range (C) Signup and view all the answers

Which of the following advanced ceramic parts can be fabricated using SLA?

Porous bioceramic scaffolds, photonic crystals, and hollow turbine blades (C) Signup and view all the answers