{"id":1478,"date":"2024-06-04T14:04:58","date_gmt":"2024-06-04T05:04:58","guid":{"rendered":"https:\/\/www.yama-ph.co.jp\/?post_type=column&#038;p=1478"},"modified":"2024-06-04T14:39:21","modified_gmt":"2024-06-04T05:39:21","slug":"glass-to-metal-hermetic-bonding-technology-called-gtmsglass-to-metal-sealing","status":"publish","type":"column","link":"https:\/\/www.yama-ph.co.jp\/en\/column\/glass-to-metal-hermetic-bonding-technology-called-gtmsglass-to-metal-sealing\/","title":{"rendered":"Glass-to-metal hermetic bonding technology, called GTMS(Glass To Metal Sealing)"},"content":{"rendered":"<p>Hermetic bonding of glass to metal, called GTMS(Glass To Metal Sealing), is one of Yamamura Photonics&#8217; oldest core technologies. In this first column, we present a four-part series on the glass-to-metal hermetic bonding technology we have developed over the years.<\/p>\n<p>&nbsp;<\/p>\n<p><u>GTMS Products<\/u>\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<u>TO-Cap<\/u>\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000<u>Glass LID<\/u><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1146\" src=\"https:\/\/www.yama-ph.co.jp\/wordpress\/wp-content\/uploads\/2023\/12\/GTMS\u88fd\u54c1-300x200.jpg\" alt=\"\" width=\"253\" height=\"168\" \/>\u3000<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1147\" src=\"https:\/\/www.yama-ph.co.jp\/wordpress\/wp-content\/uploads\/2023\/12\/TO-CAP-300x200.jpg\" alt=\"\" width=\"254\" height=\"170\" \/>\u3000<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1148\" src=\"https:\/\/www.yama-ph.co.jp\/wordpress\/wp-content\/uploads\/2023\/12\/\u30ac\u30e9\u30b9LID-300x194.jpg\" alt=\"\" width=\"261\" height=\"169\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Among Yamamura Photonics&#8217; product range, glass-to-metal sealing technology (GTMS: Glass to Metal Sealing) is applied to glass processed products (GTMS products) and optical components (TO-Cap, Glass LID). This technology is a method of adhering glass to metal by heating it to a temperature higher than the transition point of the glass, enabling high hermeticity to be achieved. Yamamura Photonics has two technologies for joining glass and metal directly and using low-melting-point sealing glass, but several conditions need to be met to achieve hermetic sealing and reliable bonding.<\/p>\n<p>&nbsp;<\/p>\n<p>\u25c6 Important conditions for hermetic bonding of glass and metal<\/p>\n<p>1. Thermal properties must be consistent between the parts to be joined.<\/p>\n<p>2. Appropriate surface treatment and oxide film formation on the metal parts.<\/p>\n<p>3. A diffusion layer of metal oxide is formed in the glass by appropriate heating during bonding.<\/p>\n<p>&nbsp;<\/p>\n<p>The above three conditions must be met in order to hermetically bond glass and metal.<br \/>\nEach of these conditions will be introduced in more detail in the next issue.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1478","column","type-column","status-publish","hentry","en-US"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.yama-ph.co.jp\/wp-json\/wp\/v2\/column\/1478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yama-ph.co.jp\/wp-json\/wp\/v2\/column"}],"about":[{"href":"https:\/\/www.yama-ph.co.jp\/wp-json\/wp\/v2\/types\/column"}],"wp:attachment":[{"href":"https:\/\/www.yama-ph.co.jp\/wp-json\/wp\/v2\/media?parent=1478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}