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  • 1
    Electronic Resource
    Electronic Resource
    Eutectic Solidification in Ceramic Systems (1981)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 11 (1981), S. 267-297 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.11.080181.001411
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal expansion of the hexagonal (4H) polytype of SiC (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 612-614 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thermal expansion of the hexagonal (4H) polytype of SiC was measured from 20 to 1000 °C by the x-ray diffraction technique. The principal axial coefficients of thermal expansion are expressed by the second-order polynomials: α11=3.21×10−6+3.56×10−9T−1.62×10−12T2, and α33=3.09×10−6+2.63×10−9T−1.08×10−12T2 (°C−1). The α11 is larger than the α33 over the entire temperature range, yielding a thermal expansion anisotropy "A'' of 0.04 at room temperature which increases to 0.11 at 1000 °C. The thermal expansion of the (4H) structure is compared with previously published results for the cubic (3C) and the hexagonal (6H) SiC polytypes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337456
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal expansion of the cubic (3C) polytype of SiC (1986)
    Springer
    Journal of materials science 21 (1986), S. 4366-4368 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thermal expansion of the cubic beta or (3C) polytype of SiC was measured from 20 to 1000° C by the X-ray diffraction technique. Over that temperature range, the coefficient of thermal expansion can be expressed as the second order polynominal: α11=3.19×10−6+ 3.60×10−9 T−1.68×10−12 T 2 (1/° C). It increases continuously from about 3.2×10−6/° C at room temperature to 5.1×10−6/° C at 1000° C, with an average value of 4.45 × 10−6/° C between room temperature and 1000° C. This trend is compared with other published results and is discussed in terms of structural contributions to the thermal expansion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01106557
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of indentation-induced cracking on the apparent microhardness (1996)
    Springer
    Journal of materials science 31 (1996), S. 1065-1070 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The phenomenon of apparent microhardness increase with increasing applied indentation test load, the reverse indentation size effect (RISE), was addressed from the viewpoint of indentation-induced cracking. The apparent microhardness when the cracking occurs was found to be related to the applied indentation test load as P 5/3. Previously published results on single crystals of silicon, GaAs, GaP and InP, which differ by a factor of four, all fall on the same line when analysed through this concept. It is concluded that the RISE is a result of the specimen cracking during the indentation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00352908
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  • 5
    Electronic Resource
    Electronic Resource
    The single-crystal elastic constants of cubic (3C) SiC to 1000° C (1987)
    Springer
    Journal of materials science 22 (1987), S. 2557-2559 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Experimental measurements of the polycrystalline elastic moduli of the cubic (3C) beta polytype of SiC at elevated temperatures and the room-temperature single-crystal elastic constants were combined through equations that relate the two to determine the stiffnesses Cij and the compliances Sij to 1000° C. The results demonstrate a general method for estimating the elevated temperature single-crystal constants of cubic crystals and illustrate that the cubic (3C) beta polytype of SiC becomes more elastically anisotropic at elevated temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082145
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  • 6
    Electronic Resource
    Electronic Resource
    The microhardness indentation load/size effect in rutile and cassiterite single crystals (1993)
    Springer
    Journal of materials science 28 (1993), S. 917-926 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The microhardness indentation load/size effect (ISE) on the Knoop microhardness of single crystals of TiO2 and SnO2 has been investigated. Experimental results have been analysed using the classical power law approach and from an effective indentation test load viewpoint. The Hays/Kendall concept of a critical applied test load for the initiation of plastic deformation was considered, but rejected to explain the ISE. A proportional specimen resistance (PSR) model has been proposed that consists of the elastic resistance of the test specimen and frictional effects at the indentor facet/specimen interface during microindentation. The microhardness test load, P, and the resulting indentation size, d, have been found to follow the relationship $$P = a_1 d + a_2 d^2 = a_1 d + (P_c /d_0^2 ) d^2$$ The ISE is a consequence of the indentation-size proportional resistance of the test specimen as described by a 1. a 2 is found to be related to the load-independent indentation hardness. It consists of the critical indentation load, P c, and the characteristic indentation size, d o.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00400874
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  • 7
    Electronic Resource
    Electronic Resource
    Knoop microhardness of single crystal sulphur (1994)
    Springer
    Journal of materials science 29 (1994), S. 5641-5645 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The Knoop microhardness of single crystal sulphur was measured as a function of crystallographic orientation and applied test load on the (110) and (111) planes. Microhardnesses were determined to be in the range of 25–35 kg mm−2. Anisotropy of the microhardness and a normal indentation size effect (ISE) were observed. The ISE was addressed by the application of the traditional power law and the proportional specimen resistance model (PSR) of Li and Bradt. The load-independent hardness was determined, from which it was concluded that the (111) plane is harder than the (110) plane and also that the (111) plane is more anisotropic in microhardness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349959
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  • 8
    Electronic Resource
    Electronic Resource
    Fracture toughness anisotropy of a pyrolytic carbon (1986)
    Springer
    Journal of materials science 21 (1986), S. 1491-1501 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The anisotropic flexural strengths, static Young's moduli and the corresponding fracture toughnesses were measured for the three orthogonal fracture surface orientations,S ca (interlaminar cleavage),S ba andS ab (layer rupture across and along the layers, respectively), of an as deposited substrate-nucleated pyrolytic carbon. BothS ca delamination andS ab along-layer rupture produced smooth fracture surfaces with meanK lc values (MPam1/2) of 0.53 forS ca and 0.93 forS ab , independent of notch length. A different type of behaviour was observed forS bc across-layer fracture. Delamination cracking during failure resulted in rough fracture surfaces, crack arrests, and high apparent toughness values dependent on sample size and crack length. The nature of this induced delamination toughening is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01114701
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  • 9
    Electronic Resource
    Electronic Resource
    Microhardness anisotropy on the (010) cleavage plane of single crystals of Bi2S3 and Sb2S3 (1992)
    Springer
    Journal of materials science 27 (1992), S. 1357-1360 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Knoop microhardnesses were measured on the (0 1 0) cleavage planes of Bi2S3 and Sb2S3 single crystals for orientations from the [0 0 1] to the [1 0 0]. The [0 0 1] hardnesses were nearly twice the level of the [1 0 0] values, about 150-75 kg mm−2. The experimental microhardness profile was consistent with the calculated effective resolved shear stress (ERSS) diagram for the (0 1 0) [0 0 1] primary slip system. The magnitude of the hardness appears to be related to the crystal structure, particularly the metal-sulphur chains parallel to the [0 0 1], the crystal growth direction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01142053
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  • 10
    Electronic Resource
    Electronic Resource
    Dynamics of fracture mirror boundary formation in glass (1977)
    Springer
    International journal of fracture 13 (1977), S. 349-359 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On étudie la formation d'une configuration en miroir dans une rupture, à l'aide d'éprouvettes de verre de silicate-soude soumises à traction et à flexion sur quatre appuis et sur trois appuis. Les dimensions de la zone en miroir dépendent de l'état des macrocontraintes dans l'éprouvette au moment de la rupture. Une approche par équilibre d'énergie, qui incorpore un terme cinéti\`que, est utilisé pour expliquer la formation en miroir et les différences dans l'état des macrocontraintes.
    Notes: Abstract The formation of fracture mirrors was investigated for specimens of a soda-lime-silicate glass tested in tension, four point flexure, and three point flexure. The dimensions of the mirror region are dependent on the macrostress state of the specimen at fracture. An energy balance approach, incorporating a kinetic term is applied to explain mirror formation and the macrostress state differences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040149
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