Current understanding and future research directions at the onset of the next century of
sintering science and technology - Bordia - 2017 - Journal of the American Ceramic Society - …

… Quan Li and Rajendra Bordia would like to acknowledge partial financial support from US
Department of Energy, Office of Nuclear Energy (DoE-NEUP), grant through Idaho National …

Non‐oxide ceramic fibers are of considerable interest due to the ability to combine the high
performance, especially high temperature thermal and creep resistance, with the structural …

… where G,(r) is the shear relaxation modulus at time t and the superscript dot on the strain
indicates the partiaf derivative with respect to time. The initial value of G, is the elastic modulus, …

… where yv is surface energy and r the radius of curvature of the pores. Note that if r = 0.1 to
1.0 pm and ys = 1 Jm-', then po = 20 to 2 MPa. It would be reasonable to expect that the tensile …

… Making the usual assumption that a’<< I, and looking for solution on a time scale of r- 1 we …
, and r is the ratio of the densification rates of Plots of equation (41) for various values of r and …

… The model of Raj and Bordia [8] assumed explicit spring-dashpot elements to represent
the constitutive properties of a porous material. The shear response was modelled by a …

… Compression‐compression fatigue testing (15 Hz, R = 0.1) resulted in normalized fatigue
strengths at 10 6 cycles ranging from 0.15 to 0.25, which is lower than the expected value of …

… The criterion that the neck area for the first contact should decrease is A(r=R’) < 0, where R’
… This will be on the order of particle radius R. Using Eqs. (1 1) and (14), the stresses at r = R‘ …

… This treatment results in a rough and sharp-edged surface with an average surface roughness
R z of 8 μm. However, the sharp borders and peaks could initiate the formation of cracks …