This set of Powder Metallurgy Quiz focuses on “Sintering of Multicomponent System – 2”. 1. Which of the following condition should be satisfied for complete penetration of liquid into the grain boundaries? a) γGS < 0.5γGB b) γLG < 0.5γGB c) γGB < 0.5γLS d) γLS < 0.5γGB 2. For liquid phase to sinter successfully, … Read more
This set of Powder Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Sintering of Multicomponent System – 1”. 1. In sintering of multicomponent systems, the material transport mechanisms involve ______ a) Self-diffusion b) Self-diffusion and inter-diffusion c) Inter-diffusion d) Intra-diffusion and self-diffusion 2. Enhanced volume diffusion is the reason for adding Ni for activated … Read more
This set of Powder Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Structure and Property Changes during Sintering”. 1. Densification cannot be treated as equal to the amount of porosity removed. a) True b) False 2. Sintering results in ________ a) Change in structure of compact b) Structural change, recrystallization, and grain shrinkage c) … Read more
This set of Powder Metallurgy Questions and Answers for Campus interviews focuses on “Sintering Mechanism – 3”. 1. Nabarro and Herring supported ________ as the dominant mechanism in sintering. a) Evaporation-condensation b) Viscous flow c) Diffusion d) Recrystallization 2. ___________ are structural arrangement of dislocations and are not perfect sinks. a) Pores b) Grain boundaries … Read more
This set of Powder Metallurgy Interview Questions and Answers for freshers focuses on “Sintering Mechanism – 2”. 1. Which of the following transport mechanisms can occur for two spheres in contact with one another during sintering? a) Evaporation-condensation, surface diffusion and volume diffusion b) Evaporation-condensation, surface diffusion, volume diffusion, volume diffusion of vacancies, and grain … Read more
This set of Powder Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Sintering Mechanism – 1”. 1. Which of the following are the main types of material transport mechanisms proposed to be operating during sintering? a) Evaporation b) Dislocation movement c) Evaporation-condensation, viscous flow, plastic flow and diffusion d) Viscous flow, metal flow 2. … Read more
This set of Powder Metallurgy Questions and Answers for Experienced people focuses on “Sintering Theory – 2”. 1. Solid-state sintering can be broadly divided into _____ stages. a) Adhesion, and Densification b) Adhesion, Densification, and spheroidization of isolated pores c) Adhesion, and grain growth d) Initial bonding, and spheroidization of isolated pores 2. In final … Read more
This set of Powder Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Sintering Theory – 1”. 1. Sintering involves _____ types of system. a) Unary b) Binary c) Single component andmulticomponent d) Ternary 2. _______ is the major material transport mechanism in sintering of the single component system. a) Inter-diffusion b) Self-diffusion c) Lattice-diffusion … Read more
This set of Powder Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on “Types of Sintering”. 1. The _______ defines sintering as, “the thermal treatment of a powder or compact at a temperature below the melting point of the main constituent, for the purpose of increasing its strength by bonding together of the particles”. a) … Read more
