{"id":2108,"date":"2022-03-31T11:45:55","date_gmt":"2022-03-31T09:45:55","guid":{"rendered":"https:\/\/www.jauch.com\/blog\/?p=2108"},"modified":"2024-04-18T16:15:30","modified_gmt":"2024-04-18T14:15:30","slug":"ask-the-product-manager-are-real-rock-crystals-used-for-production-of-oscillating-quartz-crystals","status":"publish","type":"post","link":"https:\/\/www.jauch.com\/blog\/en\/ask-the-product-manager-are-real-rock-crystals-used-for-production-of-oscillating-quartz-crystals\/","title":{"rendered":"Ask the Product Management: Are real rock crystals used for production of oscillating quartz crystals?"},"content":{"rendered":"\n<p>SiO<sub>2 <\/sub>&#8211; this is the chemical name of the\nbase material for oscillating quartz crystals. The formula shows that it is\ncomposed of only two elements: silicon and oxygen. We also find SiO<sub>2<\/sub>\nin its crystalline form in the nature: as natural rock crystals. Here, the\nquestion arises:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Are real rock crystals used for production of oscillating quartz crystals?<\/strong><\/h3>\n\n\n\n<p>Let\u2019s take a closer look at the first steps in the quartz production:<\/p>\n\n\n\n<p>Real rock crystals once formed the basis of quartz crystals. However, for the economic production of the components, highly pure rock crystals are needed. At the beginning of quartz production, real rock crystals were used and, therefore, examined and sorted by hand according to their purity. In this form, however, rock crystals are rarely available in nature.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>The artificial quartz production<\/strong><\/h3>\n\n\n\n<p>In order to meet the quality requirements for the quartz material, quartz crystals are nowadays produced artificially in so-called \u2018autoclaves\u2019. The autoclaves work according to the principle of hydrothermal synthesis. Broken crystal fragments are dissolved in an alkaline solvent. Thus, crystals can be grown in a controlled manner. The autoclave is sealed hermetically and is heating up to temperatures of 350 \u00b0C to 400 \u00b0C. \u00a0It works with pressures around 1500 bar. The advantage? Artificial crystals have a regular lattice of SiO<sub>2<\/sub> \u2013 a good condition for high-quality quartz crystals. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen-1024x576.jpg\" alt=\"Ein geschlossener Autoklav, in dem k\u00fcnstliche Quarze hergestellt werden \" class=\"wp-image-2099\" style=\"width:488px;height:275px\" srcset=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen-1024x576.jpg 1024w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen-300x169.jpg 300w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen-768x432.jpg 768w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen-280x158.jpg 280w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav-geschlossen.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Synthetic quartz crystals are produced in autoclaves.<\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>How the quartz crystal grows<\/strong><\/h3>\n\n\n\n<p>The lower part of the autoclave, the pressure vessel, is filled with water, mineralizer additives and SiO<sub>2<\/sub>. So-called \u2018seed crystals\u2019 are placed in the upper part. In the autoclave, the temperature rises. It is heated from the bottom, so that there is a temperature difference between the lower and upper chambers. The parts dissolved in the lower area settle on the seed crystals. The growth rate is determined by temperature and pressure. Depending on the values, a growth of the quartz of 0.2 to 1 mm per day is possible. The slower the growth, the higher the quality of the result.  <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck-1024x576.jpg\" alt=\"Blick in den Autoklav mit rotem Verlauf von unten der zeigt, dass Hitze von unten steigt\" class=\"wp-image-2101\" style=\"width:481px;height:270px\" srcset=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck-1024x576.jpg 1024w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck-300x169.jpg 300w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck-768x432.jpg 768w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck-280x158.jpg 280w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Hitze-und-Druck.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">The autoclave is heated from the bottom.<\/figcaption><\/figure><\/div>\n\n\n<p>After about 40 to 80 days, the \u2018alpha\u2019 crystal is produced, which can even weigh several kilos. In the next step, individual blanks are cut out of the quartz wafers. Here, different cutting angles have to be considered. The seedling is also cut out in the process and is used again for quartz production in the autoclave. <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke-1024x576.jpg\" alt=\"\" class=\"wp-image-2103\" style=\"width:491px;height:276px\" srcset=\"https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke-1024x576.jpg 1024w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke-300x169.jpg 300w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke-768x432.jpg 768w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke-280x158.jpg 280w, https:\/\/www.jauch.com\/blog\/wp-content\/uploads\/2022\/03\/Autoklav_Quarzbl\u00f6cke.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">It takes 40 to 80 days until the alpha crystals are produced.<\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"> More articles about this topic:<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.jauch.com\/blog\/en\/quartz-production-process-from-quartz-block-to-quartz-blank\/\">Quartz production process: from quartz block to quartz blank<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.jauch.com\/blog\/en\/from-assembly-to-the-final-product-the-last-stages-in-the-quartz-manufacturing-process\/\">From assembly to the final product \u2013 the last stages in the quartz manufacturing process<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SiO2 &#8211; this is the chemical name of the base material for oscillating quartz crystals. The formula shows that it is composed of only two elements: silicon and oxygen. We also find SiO2 in its crystalline form in the nature: as natural rock crystals. Here, the question arises: Are real rock crystals used for production<\/p>\n","protected":false},"author":6,"featured_media":2997,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,9],"tags":[173,262,318,213],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ask the Product Management: Are real rock crystals used for production of oscillating quartz crystals? &#8211; Jauch Blog<\/title>\n<meta name=\"description\" content=\"Are real rock crystals still used for the production of oscillating quartz crytals? 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