| 摘要 |
<p>An abrasive tool having an elongated handle member, an ultrasonic vibration source operationally connected to the elongated handle member, and a toughened foamed glass ceramic portion operationally connected to the vibration source. The toughened foamed glass ceramic portion includes a first glassy phase and a second glassy phase, wherein the second glassy phase puts the first glassy phase into compression.</p> |
