ISSN:
1572-8862
Keywords:
Aluminia
;
zirconia
;
multilayers
;
hardness
;
nanocomposite
;
self-assembly
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Alternate layers of Al2O3 and ZrO2 nanocomposite films were prepared on silicon wafers and glass substrates at room temperature using the electrostatic self-assembly monolayer (ESAM) process. The versatile approach of the ESAM process provides the possibility of integrating diverse inorganic colloids on the nanosize level in a layer-by-layer or block-by-block fashion. Further, it allows the combination of inorganic colloids and organic molecules, making it possible to fabricate thick films with large pores and good stress relaxation. Highly ordered, micron-thick films have been formed, sintered, and characterized by scanning electron microscopy and ellipsometry. There is no significant visible crack formation for Al2O3–ZrO2 composite films after heat treatment at 1200°C for 2 h, although significant thickness reduction occurs. The hardness and Young's modulus of these films before and after sintering were measured using nanoindentation techniques.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022629110612
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