Enhancement of the compressive strength of highly porous Al2O3 foam through crack healing and improvement of the surface condition by dip-coating

Ahmad, Rizwan; Ha, Jang‐Hoon; Song, In‐Hyuck

doi:10.1016/j.ceramint.2013.09.057

Cited by 28 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their specific compressive strength is in the range of bone material and advanced metallic alloys (1,32). Designs with a solid material fraction of only 13% alumina (A and B at 50 nm) already reach the highest specific strength of pure alumina foam (32,33). A maximum compressive strength of 55 MPa at 410 kg/m 3 is achieved (D at 200 nm).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

High-strength cellular ceramic composites with 3D microarchitecture

Bauer

Hengsbach

Tesari

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

472

340

View full text Add to dashboard Cite

Significance It has been a long-standing effort to create materials with low density but high strength. Technical foams are very light, but compared with bulk materials, their strength is quite low because of their random structure. Natural lightweight materials, such as bone, are cellular solids with optimized architecture. They are structured hierarchically and actually consist of nanometer-size building blocks, providing a benefit from mechanical size effects. In this paper, we demonstrate that materials with a designed microarchitecture, which provides both structural advantages and size-dependent strengthening effects, may be fabricated. Using 3D laser lithography, we produced micro-truss and -shell structures from ceramic–polymer composites that exceed the strength-to-weight ratio of all engineering materials, with a density below 1,000 kg/m 3 .

show abstract

Section: Resultsmentioning

confidence: 99%

“…designs obtain outstanding values. Truss structures A, B, and D exceed all technical foam materials (31)(32)(33). Their specific compressive strength is in the range of bone material and advanced metallic alloys (1,32).…”

Section: Resultsmentioning

confidence: 99%

High-strength cellular ceramic composites with 3D microarchitecture

Bauer

Hengsbach

Tesari

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

472

340

View full text Add to dashboard Cite

show abstract

“…Occurrence of cracks on the porcelain foam struts can be attributed to the pyrolysis of the sponge template during the sintering process. This can be overcome by forming a thick ceramic coating or introducing a secondary coat over the virgin template [20,23,24].…”

Section: Introductionmentioning

confidence: 99%

“…This process can produce a coating layer/thickness in the range of 100 nm to 100 µm [9]. Over the years, the dip-coating technique has been popularly used on account of the fact that it is simple, low cost, less time consuming, cheaper base material and precursors can be used, good control on layer thickness, and less wastage during fabrication of both porous and dense coatings [9,10,20]. Moreover, dip-coating is a very straightforward process and the most suitable technique used to coat porous substrates.…”

Section: Introductionmentioning

confidence: 99%

“…This creates a cluttered formation of accumulated particles, resulting in a closed cell morphology. Ahmad et al[20] states that, a structure with an open cell morphology (foam) induces a lower capillary suction force for coating, relative to that prompted by micro-pores on the struts of a substrate. Moreover, the inserts shows that the coating particles are almost uniformly deposited.…”

mentioning

confidence: 99%

See 1 more Smart Citation