Nanoindentation of particulate coatings

被引：8

作者：

Adams, MJ ^{[1
]}

Akram, A ^{[1
]}

Briscoe, BJ ^{[1
]}

Lawrence, CJ ^{[1
]}

Parsonage, D ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn & Chem Technol, Particle Technol Grp, London SW7 2BY, England

来源：

JOURNAL OF MATERIALS RESEARCH | 1999年 / 14卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1557/JMR.1999.0311

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A knowledge of the formation and rupture mechanisms for agglomerates is essential when seeking to model equipment designed to produce and process such materials. In the work described here, nanoindentation of "two-dimensional" agglomerate films, basically particulate coatings, was carried out to establish a means of identifying the generic breakage mechanisms for agglomerates. Selected applied load and penetration depth data in the range (0.02 mN and 700 nm, respectively) are provided as a function of the loading: time during continuous loading for a model system composed rather of monodispersed colloidal silica particles (20-24 nm diameter) bound with a poly(methyl methacrylate) at 5 vol%. It is argued that these data enable the sequence of binder bridge failures to be observed, thus giving an indication of the breakage mechanism of the agglomerate and also the strength of the individual junctions. These data are also incorporated into a mechanical model that describes the rupture and deformation behavior of these planar agglomerate systems.

引用

页码：2344 / 2350

页数：7

共 19 条

[1]

[Anonymous], STRENGTH GRANULES AG

[2] Nanoindentation creep of single-crystal tungsten and gallium arsenide [J].