2003
DOI: 10.1023/a:1022289623789
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Cited by 17 publications
(8 citation statements)
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References 9 publications
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“…Microindentation has been employed to assess the mechanical behavior of molecular crystals 34. Duncan‐Hewitt and Weatherly studied the H , H / E ratio, and indentation fracture toughness of crystals of pharmaceutically relevant compounds, and classified them into materials which fragment extensively and those that behave in an essentially ductile manner during compaction 35.…”
Section: Mechanical Properties Of Molecular Crystalsmentioning
confidence: 99%
“…Microindentation has been employed to assess the mechanical behavior of molecular crystals 34. Duncan‐Hewitt and Weatherly studied the H , H / E ratio, and indentation fracture toughness of crystals of pharmaceutically relevant compounds, and classified them into materials which fragment extensively and those that behave in an essentially ductile manner during compaction 35.…”
Section: Mechanical Properties Of Molecular Crystalsmentioning
confidence: 99%
“…The hardness of the grown sample increases with increasing of load, after load reaches 40 g, the hardness decreases with increase of load and finally reaches the saturation level. There were no cracks observed up to 200 g. From the microhardness studies of the melt grown PA crystal, it is found that the sample has higher hardness because of the interaction between defects such as strains, vacancies and impurities, which resist the motion of dislocation and makes the crystal harder [15]. Figure 4 shows the plot between hardness and Load.…”
Section: Growth Of Pa By Vertical Bridgman Technique (Vbt)mentioning
confidence: 99%
“…[34] Duncan-Hewitt und Weatherly untersuchten H, das H/E-Verhältnis und die Indentations-Bruchzähigkeit von Kristallen pharmazeutisch relevanter Verbindungen und stuften diese in Materialien ein, die stark fragmentieren, und solche, die sich beim Kompaktieren im Wesentlichen duktil verhalten. [34] Duncan-Hewitt und Weatherly untersuchten H, das H/E-Verhältnis und die Indentations-Bruchzähigkeit von Kristallen pharmazeutisch relevanter Verbindungen und stuften diese in Materialien ein, die stark fragmentieren, und solche, die sich beim Kompaktieren im Wesentlichen duktil verhalten.…”
Section: Quantitative Untersuchungenunclassified
“…Mikroindentation wurde auch zur Untersuchung von Molekülkristallen eingesetzt. [34] Duncan-Hewitt und Weatherly untersuchten H, das H/E-Verhältnis und die Indentations-Bruchzähigkeit von Kristallen pharmazeutisch relevanter Verbindungen und stuften diese in Materialien ein, die stark fragmentieren, und solche, die sich beim Kompaktieren im Wesentlichen duktil verhalten. [35,36] Die bei der Mikroindentation beobachtete Sprçdigkeit von Acetaminophenkristallen wurde deren eingeschränktem Gleitsystem zugeschrieben.…”
Section: Quantitative Untersuchungenunclassified