| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a quartz glass container not eluting a metal impurity during use or not diffusing the metal impurity in a high-temperature environment and to provide a method for producing the quartz glass container. SOLUTION: This quartz glass container has arbitrary thickness (t) and <0.1 ppb concentration of Na, Mg, Al, K, Ca, Cr, Fe, Ni, Cu and Zn, respectively in the thickness range of 20μm from the surface and in the thickness range of 1/2t±10μm. The method for producing the quartz glass container comprises forming a container shape from a synthetic quartz glass block only by mechanical grinding without heat treatment.</p> |
