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Fine-grained deposits, physical properties

The microstmcture and imperfection content of coatings produced by atomistic deposition processes can be varied over a very wide range to produce stmctures and properties similar to or totally different from bulk processed materials. In the latter case, the deposited materials may have high intrinsic stress, high point-defect concentration, extremely fine grain size, oriented microstmcture, metastable phases, incorporated impurities, and macro-and microporosity. AH of these may affect the physical, chemical, and mechanical properties of the coating. [Pg.48]

All deposits of metals are made of grains whose structural-physical nature (1) can be divided into four types (1) columnar, (2) fine-grained, (3) fibrous, and (4) banded. In terms of their practical macroscopic physical properties, their main characteristics may be summarized as follows ... [Pg.273]

The finely crystalline zeolitic matrix of tuffs cements the other non zeolitic particles and is responsible for the overall mechanical properties of the material. The compactness and the consequent physical-mechanical properties are somewhat variable as they are function of various parameters, such as mineral composition, tuff genesis, and original conditions of the deposit, especially as regards looseness of the parent material, grain size distribution, and others. Table 3 summarizes some data on unit weight, y, porosity, P, and uniaxial compressive strength, a, of a few tuff samples and other stone materials. [Pg.29]


See other pages where Fine-grained deposits, physical properties is mentioned: [Pg.124]    [Pg.135]    [Pg.27]    [Pg.38]   
See also in sourсe #XX -- [ Pg.273 ]




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