In those cases where leaded frits seem necessary, it is recommended to fire to at least cone 03, to ensure sufficient reaction of lead and glaze ingredients.
2
本文研究了含铅的硼酸盐封接玻璃和无铅磷酸盐封接玻璃。
In this paper both lead borate sealing glasses and lead free phosphate sealing glasses are studied.
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