| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a creation method in which a glass-bead test body for fluorescent X-ray analysis is created safely and easily by a method wherein an oxidized and molten substance which is obtained by indirectly heating a mixture of a ceramic refractory and a lithium borate-based flux is induction-heated and a uniform molten liquid is formed so as to be changed into glass beads. SOLUTION: A ceramic refractory sample which is oxidized and treated at a high temperature is broken into pieces until it is passed wholly through a sieve of 100μm. The sample in a prescribed amount is sampled so as to be mixed well with lithium metaborate (a lithium borate-based flux) whose weight is about 10 times and which is dried and treated, and it is spread all over uniformly in a flat-bottom evaporating dish which is composed of a platinum alloy containing gold. Then, a vertical electric furnace is heated preliminarily. The flat-bottom evaporating dish is put into the furnace, and a temperature is set at about 1100 deg.C. The sample is heated for about 30 minutes, it is oxidized and melted, and a molten substance in a turbid state is obtained. After that, the molten substance is moved to a deep pan whose material is identical to that of the flat-bottom dish, it is put into an induction heating-type vertical electric furnace so as to be heated at about 1200 deg.C, and it is melted completely. A uniform molten liquid is obtained, and it is then cooled so as to be changed into glass beads.</p> |
