Strength of synthetic diamonds under tensile stresses produced by picosecond laser actionстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из перечня ВАК
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 5 сентября 2016 г.
Аннотация:Results of an experimental-theoretical study of spallation in synthetic diamonds are presented. In this study, data were first obtained on dynamic tensile strength of poly- and singlecrystal diamond samples at mechanical loads of up to 0.34 TPa and strain rates of 10-100 A mu s(-1). Shock-wave loading was performed by 70 ps laser pulses on a Kamerton-T facility using a Nd:glass laser (second harmonics lambda = 527 nm, pulse energy of up to a parts per thousand 3 J) at intensities of a parts per thousand 8 TW/cm(2). The obtained maximal value of the spall strength a parts per thousand 16.4 GPa is 24% of the theoretical ultimate strength of diamond. Raman scattering experiments showed that a small amount of diamond was graphitized in the spall area on the backside of the sample.