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Sialons
Mixture of silicon nitride, aluminium nitride and alumina is hot pressed to acquire a product largely called as sialon. In the resulting product the structure has partially aluminium substituted for oxygen and silicon for nitrogen. Such product has better properties than silicon nitride. The compacted mixture is more sintered in presence of densifying constituents. The sintered material is dense along with reduced porosity and enhances strength close to 400 MPa. Mixture of silicon and alumina can be nitrided and sintered to acquire the same product. Sialons are increasingly being utilized at high speeds as like abrading tool in manufacturing processes.
An airfoil of surface area 1.5 ft2 is tested for lift L in a wind tunnel. At an angle of attack of 7° with standard air of density 0.0024 slugs/ft3 at a speed of 90 ft/sec, the lif
a) Describe the role of value engineering in new product design and manufacturing. b) Elaborate the basic concept of Just-in-Time in context of optimization of inventory costs.
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Explain the Laws of Thermodynamics Usually thermodynamics contains four laws; a. Zeroth law: this law deals with thermal equilibrium and establishes an idea of temperature.
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#what is porosity in welding is this different from pin hole
A lifting shackle in a glass-making factory is made from a special high-temperature stainless steel. It is expected that the shackle will experience a tensile load of 5kN and th
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